12072992 Rytter, Rose-Marie (Rytter Science, Rostanga, Sweden). Stone and gravel contents of arable soils influence estimates of C and N stocks: Catena (Giessen), 95, p. 153-159, illus. incl. 3 tables, 46 ref., August 2012.

Studies concerning the stoniness of arable soils are scarce since those soils are commonly regarded as composed mainly of fine earth. However, even the influence of lesser volumes of stones and gravel on estimates of nutrient stocks may be significant. Nutrient analyses are performed on the fine earth fraction. It is therefore necessary to determine the bulk density and the relative soil volume that is occupied by fine earth when expressing nutrient stocks per unit area and to a certain depth. In this study, relative volumes of stones and gravel were investigated in the top soils, i.e. down to 30cm depth, of five Swedish arable sites. Bulk density and gravel volume were determined by soil coring and stone volume using the rod penetration method. A function for estimation of relative stone volume from mean penetration depth was developed. The function is suitable for soils with low stoniness, i.e. less than 10%. The results showed that although the relative volumes of stones and gravel were small, at most 8%, neglecting the volume occupied by rock fragments led to an overestimation of C and N stocks by 8-9%. The moderate volumes of stones and gravel also significantly affected comparisons between sites. It was concluded that the inclusion of stone and gravel volume of arable soils may be important if nutrient stocks of different sites are compared, or the effects of land use changes are scaled up to regional or global levels.

DOI: 10.1016/j.catena.2012.02.015

12075148 Ryu, Jong-Sik (Northwestern University, Department of Earth and Planetary Sciences, Evanston, IL) and Jacobson, Andrew D. CO₂ evasion from the Greenland ice sheet; a new carbon-climate feedback: Chemical Geology, 320-321, p. 80-95, illus. incl. 6 tables, sketch map, 95 ref., August 6, 2012.

Decay of the Greenland Ice Sheet (GIS) figures prominently in climate change predictions, but direct carbon cycle feedbacks are poorly constrained. Here, we show that melting of the GIS yields a previously unknown flux of CO₂ to the atmosphere, and we use a reactive-transport model to examine if, how, and to what extent this flux will change as the ice sheet decays in a warmer world. Water emerges from beneath the Isunnguata and Russell Glaciers in West Greenland with CO₂ partial pressures (pCO₂) 3 - 10x supersaturated with respect to atmospheric equilibrium. During downstream transport in the Akuliarusiarsuup Kuua River, mineral weathering sequesters 75% of the excess CO₂ as HCO₃^- - a carbon sink on human timescales - and the remaining 25% evades to the atmosphere. Scaled to all rivers draining the GIS, the evasion flux of 0.11±0.03 Tg C/year compares to fluxes reported for other rivers draining Precambrian shield crystalline rocks and having similar dissolved carbonate systematics. This flux is insufficient to influence modern-day atmospheric CO₂ levels, and we find that higher meltwater discharge alone will cause only moderate future increases. However, more substantial increases could occur if meltwaters intersect basal ice known to have elevated pCO₂ values. Worst-case model scenarios yield evasion fluxes of 100±20-170±40 Tg C/year by 2100. These atmospheric CO₂ inputs surpass those for Arctic Lakes and would augment by up to ~25% those predicted for permafrost thaw. Our findings suggest that positive feedbacks linking greenhouse gas emissions, Arctic climate change, and global warming may be stronger than previously realized.

DOI: 10.1016/j.chemgeo.2012.05.024

12069573 Venalainen, Salla H. (University of Helsinki, Helsinki, Finland). Sorption of lead by phlogopite-rich mine tailings: Applied Geochemistry, 27(8), p. 1593-1599, illus. incl. 2 tables, 40 ref., August 2012.

The Pb sorption capacity of apatite ore mine tailings and its potential to act as a remediation agent in a Pb polluted areas were investigated. The tailings, originating from the Siilinjarvi carbonatite complex in Finland, consist mainly of phlogopite and calcite accompanied by apatite residues. The ability of the tailings to retain Pb from an aqueous solution was investigated using an isotherm technique. Furthermore, in a 3-month incubation experiment, uncontaminated mineral soil was amended with untreated tailings and with tailings artificially weathered with acid to increase the quantity of Al and Fe (hydr)oxides. Tailings of two particle-sizes (theta > 0.2 mm and theta < 0.2 mm) somewhat differing in their mineralogical composition were investigated as separate amendments. All tailings materials were added to the soil in two dosages (5 g and 10 g of tailings per 125 g of soil). Following incubation, tailings-induced changes in the Pb sorption capacity of the soil were investigated with the isotherm technique. Finally, to investigate the distribution of sorbed Pb among various chemical pools, the soil samples amended with tailings were contaminated with Pb and then subjected to sequential fractionation analysis. The results revealed efficient removal of Pb from an aqueous solution by the tailings, presumably through precipitation and surface complexation mechanisms. Amending the soil with the tailings increased the mass-based maximum Pb sorption capacity from 10.8 mg kg^-1 of the control soil to 14-20.5 mg kg^-1 for the untreated tailings and to 32.1-72.1 mg kg^-1 for the acid-treated material. The tailings transferred Pb from the exchangeable pool to the non-extracted one and thereby substantially decreased its bioavailability. The material with a particle diameter of less than 0.2 mm had a higher mass-based Pb sorption capacity than the large-sized material. The results suggest that the tailings may potentially serve as an immobilizing agent in polluted areas.

DOI: 10.1016/j.apgeochem.2012.05.011

12073207 Fietz, Susanne (Universitat Autonoma de Barcelona, Institut de Ciéncia i Tecnologia Ambientals, Cerdanyola del Valle, Spain); Huguet, Carme; Bendle, James; Escala, Marina; Gallacher, Christopher; Herfort, Lydie; Jamieson, Robert; Martínez-García, Alfredo; McClymont, Erin L.; Peck, Vicky L.; Prahl, Frederick G.; Rossi, Sergio; Rueda, Gemma; Sanson-Barrera, Anna and Rosell-Melé, Antoni. Co-variation of crenarchaeol and branched GDGTs in globally-distributed marine and fresh-water sedimentary archives: Global and Planetary Change, 92-93, p. 275-285, illus. incl. 2 tables, 74 ref., July 2012. Includes appendices.

Two major types of glycerol dialkyl glycerol tetraethers (GDGTs) are commonly used in paleoecological and paleoclimatological reconstructions: isoprenoidal and branched GDGTs. In aquatic environments, it was originally assumed that isoprenoidal GDGTs, especially crenarchaeol, derive mainly from aquatic Thaumarchaeota, while branched GDGTs are an allochthonous input derived from soil Bacteria. Recently, direct co-variation of crenarchaeol and branched GDGTs has been described in two marine sedimentary records, and this observation suggests that in situ production of branched GDGTs is possible at least in some aquatic environments. After investigating 30 published and unpublished data sets from downcore and surface sediments as well as sediment traps from 19 distinct regions around the world, we found a widespread significant correlation between concentrations of branched GDGTs and crenarchaeol (p<0.01; r²=0.57-0.99), even when normalized against TOC, where available. These data sets include freshwater and marine environments with varying distances from the shore, varying redox conditions and different terrestrial matter input pathways. Our findings from this large-scale data set suggest that a common or mixed source for both GDGT types is actually commonplace in lacustrine and marine settings.

DOI: 10.1016/j.gloplacha.2012.05.020

12073187 Koteswara Rao, K. (Indian Institute of Tropical Meteorology, Climatology and Hydrometeorology Division, Pashan, India); Lakshmi Kumar, T. V. and Lakshmana Rao, V. Variability of agro-climatic regime over homogeneous monsoon regions of India; El Niño and La Niña events: Global and Planetary Change, 92-93, p. 48-57, illus. incl. 4 tables, sketch map, 58 ref., July 2012.

The global short term climate signal from the Equatorial Pacific sea surface temperature pattern in conjunction with the Southern oscillation of sea level pressure plays a crucial role in governing the global weather systems by modulating and altering the yearly climate scenario across the globe. The analysis of Normalized Difference in Vegetation Index (NDVI) fields of the five homogeneous regions of India with the index of moisture adequacy and Multivariate ENSO Index yielded the phenological metrics such as senescence in terms of greenness up and down along with the lag between maximum NDVI and index of moisture adequacy for normal (1982-2000), El Nino (1997) and La Nina (1998) years respectively. A threshold value of 60% soil moisture adequacy is considered for sustainable crop or vegetation growth in obtaining the phenological metrics for the regions under consideration. The north east, peninsular India along with west central India experienced an increase in the number of humid days both in the El Nino and La Nina years compared to normal. The annual figures of All India rice yields are increasing linearly and the trend was significant but no trend is noticed in moisture adequacy. An agro climatic model is developed for the estimation of All India rice yield and is of help in designing the agro meteorological advisories.

DOI: 10.1016/j.gloplacha.2012.03.007

12073201 Lilleoren, Karianne S. (University of Oslo, Department of Geosciences, Oslo, Norway); Etzelmuller, Bernd; Schuler, Thomas V.; Gisnas, Kjersti and Humlum, Ole. The relative age of mountain permafrost; estimation of Holocene permafrost limits in Norway: Global and Planetary Change, 92-93, p. 209-223, illus. incl. 3 tables, sketch maps, 150 ref., July 2012.

For Scandinavia in general and Norway in particular the regional distribution of mountain permafrost is reasonably well known, both through ground temperature measurements in boreholes, geophysical soundings and spatial modeling. However, the evolution of permafrost over longer time periods, such as the Holocene, is unknown, but is considered to have significance for landscape development and geomorphological processes in high mountain areas of Scandinavia. In this study two mean annual air temperature series covering the Holocene have been compiled to drive a 1D heat flow model over a 10 kyr period for several sites in Norway. At each site temperature-monitored boreholes exist, which were used to calibrate the model. In addition the spatial distribution of permafrost during selected time periods of the Holocene was addressed using a newly implemented version of an equilibrium permafrost model. The result of this study indicates an altitudinal zonation of relative permafrost age in Norway. We find that permafrost has existed continuously since the deglaciation at the highest altitudes, whereas in large areas where permafrost currently is present, it degraded during the Holocene thermal maximum (HTM). In all boreholes the coldest simulated permafrost occurred during the 'Little Ice Age' (LIA), and also the largest areal distribution of Holocene permafrost in Norway seems to be connected to the LIA.

DOI: 10.1016/j.gloplacha.2012.05.016

12073277 Sanders, Johnny W. (University of California at Berkeley, Department of Earth and Planetary Science, Berkeley, CA); Cuffey, Kurt M.; Moore, Jeffrey R.; MacGregor, Kelly R. and Kavanaugh, Jeffrey L. Periglacial weathering and headwall erosion in cirque glacier bergschrunds: Geology (Boulder), Pre-Issue Publication, unpaginated, illus. incl. 1 table, 30 ref., July 18, 2012. WWW. With GSA Data Repository Item 2012222; accessed on July 26, 2012.

Glaciers produce cirques by scouring their beds and sapping their headwalls, but evidence to constrain models of these processes has been elusive. We report a suite of environmental measurements from three cirque glacier bergschrunds, including the first temperature series recorded at depth throughout most of an annual cycle. Compared to the ambient air, the bergschrunds were colder in summer and warmer in winter. Freeze-thaw cycles were rare, and relatively stable subfreezing temperatures persisted from November until May. Using a model for rock fracturing driven by ice segregation, we demonstrate that favorable conditions for fracturing occur not only on the headwall above the glacier, but also within the bergschrund, where periglacial weathering and glacial transport can act together to drive cirque headwall retreat. A small (~3 °C) year-round decrease in temperatures to conditions more typical of the Pleistocene would likely intensify the weathering process. Though so far ignored in all glacial landscape evolution models, the bergschrund likely plays an essential role in the sculpting of alpine landscapes.

DOI: 10.1130/G33330.1

12075133 Lewis, Ted (Queen's University, Department of Geography, Kingston, ON, Canada); Lafrenière, Melissa J. and Lamoureux, Scott F. Hydrochemical and sedimentary responses of paired High Arctic watersheds to unusual climate and permafrost disturbance, Cape Bounty, Melville Island, Canada: Hydrological Processes, 26(13), p. 2003-2018, illus. incl. 7 tables, sketch map, 48 ref., June 30, 2012.

High Arctic river responses to changing hydroclimatic and landscape processes are poorly understood. In non-glacierized basins, snowmelt and rainfall generate river discharge, which provides first order control over fluxes. Further factors include the seasonality of precipitation, seasonal active layer development, and permafrost disturbance. These controls were evaluated in terms of sedimentary and biogeochemical fluxes from paired catchments at Cape Bounty, Melville Island, Nunavut during 2006-2009. Results indicate that the source of runoff can be more important than the amount of runoff for sediment, solutes, and organic yields. Although the snowmelt period is typically the most important time for these yields, heavy late summer precipitation events can create disproportionately large yields. Rainfall increases yields because it hydrologically connects areas otherwise isolated. Inorganic solute yields from late summer rainfall are higher because the thick active layer maximizes hydrologic interactions with mineral soils and generates high solute concentrations. Results also indicate that while the catchments are broadly similar, subtle topographic differences result in important inter-catchment differences in runoff and suspended and dissolved loads. The East watershed, which had less extensive permafrost disturbance, consistently had higher concentrations of dissolved solids. These higher dissolved fluxes cannot therefore be explained by thermokarst features, but rather by deeper active layer development, due to a greater proportion of south-facing slopes. Although warm temperatures in 2007 led to extensive active layer disturbance in the West watershed, because the disturbances were largely hydrologically disconnected, the total disturbed area was small, and inter-annual variability in discharge was high, there was no detectable response in dissolved loads to disturbances. Sediment availability increased after 2007, but yields have largely returned to pre-disturbance levels. Results indicate that seasonality and frequency-magnitude characteristics of projected increases in precipitation must be considered along with active layer changes to predict the fluvial sedimentary and biogeochemical response to regional climate change. Abstract Copyright (2010), John Wiley & Sons, Ltd.

DOI: 10.1002/hyp.8335

12073055 Pang Qiangqiang (Chinese Academy of Sciences, Cryosphere Research Station on Qinghai-Xizang Plateau, Cold and Arid Regions Environmental and Engineering Research Institute, Lanzhou, China); Zhao Lin; Li Shuxun and Ding Yongjian. Active layer thickness variations on the Qinghai-Tibet Plateau under the scenarios of climate change: Environmental Earth Sciences, 66(3), p. 849-857, illus. incl. 1 table, sketch maps, 51 ref., June 2012.

Climate change has greatly influenced the permafrost regions on the Qinghai-Tibet Plateau (QTP). Most general circulation models (GCMs) project that global warming will continue and the amplitude will amplify during the twenty-first century. Climate change has caused extensive degradation of permafrost, including thickening of the active layer, rising of ground temperature, melting of ground ice, expansion of taliks, and disappearance of sporadic permafrost. The changes in the active layer thickness (ALT) greatly impact the energy balance of the land surface, hydrological cycle, ecosystems and engineering infrastructures in the cold regions. ALT is affected by climatic, geographic and geological factors. A model based on Kudryavtsev's formulas is used to study the potential changes of ALT in the permafrost regions on the QTP. Maps of ALT for the year 2049 and 2099 on the QTP are projected under GCM scenarios. Results indicate that ALT will increase with the rising air temperature. ALT may increase by 0.1-0.7 m for the year 2049 and 0.3-1.2 m for the year 2099. The average increment of ALT is 0.8 m with the largest increment of 1.2 m under the A1F1 scenario and 0.4 m with the largest increment of 0.6 m under the B1 scenario during the twenty-first century. ALT changes significantly in sporadic permafrost regions, while in the continuous permafrost regions of the inland plateau ALT change is relatively smaller. The largest increment of ALT occurs in the northeastern and southwestern plateaus under both scenarios because of higher ground temperatures and lower soil moisture content in these regions. Copyright 2011 Springer-Verlag

DOI: 10.1007/s12665-011-1296-1

12069304 Rivas, Yessica (Universidad Austral de Chile, Facultad de Ciencias Forestales y Recursos Naturales, Valdivia, Chile); Matus, Francisco; Rumpel, Cornelia; Knicker, Heike and Garrido, Estrella. Black carbon contribution in volcanic soils affected by wildfire or stubble burning: Organic Geochemistry, 47, p. 41-50, illus. incl. 4 tables, 60 ref., June 2012.

Forest wildfire and stubble burning practices in agriculture contribute to the formation of black carbon (BC), a continuum of pyrogenic carbon ranging from slightly charred degradable biomass to highly condensed refractory soot. We examined the BC contribution to Andisol after a wildfire in a pristine Araucaria-Nothofagus spp. temperate rain forest and after 17 years of stubble burning on an agricultural soil. We tested the hypothesis that the severity of stubble burning and forest fire affects the quantity and composition of soil organic matter (SOM) and that fire-derived aromatic BC is the main contributor to stabilised SOM in fire-affected soil. BC contribution was analysed as the aromatic fraction of the acid dichromate oxidation residue (COREC_arom). The results indicated that the BC content of agricultural soil was unaffected by the stubble burning, whereas in the forest soil, it increased with fire severity from 0.5% at an unburned site to up to 7% in the topsoil severely affected by wildfire. For both ecosystems, the total C stock correlated positively with pyrophosphate extractable Al, whereas a poor or inconsistent relationship was found with BC. We conclude that aromatic BC plays a minor role in C stabilisation in these fire-affected soils due to losses most likely following transport. Aliphatic compounds were less affected by the dichromate oxidation treatment relative to the aromatic compounds than any other functional groups, emphasising the importance of alkyl C for soil C sequestration by virtue of chemical recalcitrance.

DOI: 10.1016/j.orggeochem.2012.03.007

12069453 Tipper, Edward T. (ETH Zurich, Institute of Geochemistry and Petrology, Zurich, Switzerland); Lemarchand, Emmanuel; Hindshaw, Ruth S.; Reynolds, Ben C. and Bourdon, Bernard. Seasonal sensitivity of weathering processes; hints from magnesium isotopes in a glacial stream: Chemical Geology, 312-313, p. 80-92, illus. incl. 1 table, sketch map, 91 ref., June 18, 2012.

Seasonal changes in river chemistry offer the potential to assess how weathering processes respond to changing meteorological parameters and ultimately how chemical weathering might respond to climatic parameters. Systematic seasonal variations in magnesium isotope ratios (the ²⁶Mg/²⁴Mg ratio expressed as d²⁶Mg in per mil units) are reported in stream waters from a mono-lithological granitic, weathering-limited, first order catchment from the Swiss Alps (Damma glacier). Rain, ground, and pore-waters, in addition to plants, rocks, mineral separates and soil are also reported. The concentration response of the river waters is attenuated compared to the large changes in discharge. However, the systematic trends in the isotope data imply that either the source of the Mg changes in a systematic manner, or that the process by which Mg is released into solution changes as a function of discharge. The two first order observations in the data that need to be explained are 1) the systematic enrichment in ²⁴Mg in the stream waters compared to the granitic rocks they drain and 2) a systematic increase in d²⁶Mg in the waters during the summer melt season. Both observations (which are similar to many other rivers draining silicate rock) can either be accounted for by 1) conservative mixing between at least two different sources of Mg (in addition to precipitation inputs), or 2) process related fractionation. If the stream water compositions can be rationalised by multi-component mixing, there is at least one unidentified component with a d²⁶Mg<-1.2 ppm. This is considered unlikely. Multiple physicochemical processes could fractionate Mg isotope ratios such as 1) preferential leaching of ²⁴Mg, 2) exchange of Mg onto (or from) mineral surfaces and into interlayer sites of clays, 3) uptake by plants, and 4) ²⁶Mg could be preferentially retained during the formation of secondary phases, such as clays, amorphous phases or oxides. These processes are not mutually exclusive and distinguishing between them at a field scale is not trivial, but significant biological uptake is improbable at this site. Unless there is a non-identified external input of Mg, ²⁶Mg must be accumulating in solid phase residues in the catchment because of at least one physicochemical process. Such processes are likely well described, at least in the first order by a Rayleigh distillation model. Simple calculations illustrate how much ²⁶Mg would accumulate in the catchment per unit time. In the first order, the isotopic enrichments in the solids are so small that they would not be detectable for the time-scales that are relevant to this field site, in spite of the marked impact on the water chemistry. The seasonal signal detected by Mg isotope ratios is promising for using them (with a better understanding of fractionation mechanisms) to quantify how specific weathering processes impact upon both export fluxes, and retention of elements within catchments.

DOI: 10.1016/j.chemgeo.2012.04.002

12071474 Wang Genxu (Chinese Academy of Sciences, Institute of Mountain Hazards and Environment, Chengdu, China); Liu Guangsheng and Li Chunjie. Effects of changes in alpine grassland vegetation cover on hillslope hydrological processes in a permafrost watershed: Journal of Hydrology, 444-445, p. 22-33, illus. incl. 5 tables, sketch map, 56 ref., June 11, 2012.

Two main types of grasslands on the Qinghai-Tibet Plateau, alpine swamp and alpine meadow, were selected for this study. Monitoring plots were constructed on each type of grassland with varying degrees of vegetation degradation. The impacts of alpine grassland cover changes on the hillslope water cycle were analyzed in terms of runoff generation, precipitation interception, dew water formation, and soil water dynamics of the active layer, etc. The results showed that different types of grasslands led to different runoff generation regimes; namely, runoff varied linearly with precipitation in alpine swamp, whereas in alpine meadow, runoff exhibited an exponential precipitation-dependence. The decrease in vegetation cover in alpine swamp leads to a decrease in soil moisture content in the top 20 cm of the soil, a delay in the thawing start time in the spring, and a decrease in both surface runoff and subsurface interflow. In alpine meadow, however, the decrease in vegetation cover led to a significant increase in the depth of topsoil moisture content during the thawing period, earlier occurrence of thawing, and an increase in the runoff generation ratio. The alpine meadow vegetation canopy had a higher maximum interception ratio and saturation precipitation than alpine swamp vegetation. With the decrease in vegetation cover, the rainfall interception ratios decreased by almost an identical range in both the alpine meadow and alpine swamp grasslands. Dew water commonly occurs on alpine grassland, accounting for about 12.5-16.5% of precipitation in the same period, and thus, is an important component of the water cycle. With the degradation of vegetation, surface dew water decreased; however, the ratio of dew water formed in the air to the total amount of dew water rose significantly. At the hillslope scale, the changes of alpine vegetation cover had a great influence on the water cycle, which were partly attributed to that the changes of alpine vegetation cover directly altered the surface energy balance, surface water cycle processes, and the thermal and hydraulic properties of active soil.

DOI: 10.1016/j.jhydrol.2012.03.033

12071278 Bargmann, Swantje (Technical University of Dortmund, Institute of Mechanics, Dortmund, Germany); Seddik, Hakime and Greve, Ralf. Computational modeling of flow-induced anisotropy of polar ice for the EDML deep drilling site, Antarctica; the effect of rotation recrystallization and grain boundary migration: International Journal for Numerical and Analytical Methods in Geomechanics, 36(7), p. 892-917 (French sum.), illus. incl. 1 table, 51 ref., May 2012.

DOI: 10.1002/nag.1034

12069199 Dümig, Alexander (Technische Universität München, Lehrstuhl für Bodenkunde, Germany); Häusler, Werner; Steffens, Markus and Kögel-Knabner, Ingrid. Clay fractions from a soil chronosequence after glacier retreat reveal the initial evolution of organo-mineral associations: Geochimica et Cosmochimica Acta, 85, p. 1-18, illus. incl. 6 tables, 95 ref., May 15, 2012.

Interactions between organic and mineral constituents prolong the residence time of organic matter in soils. However, the structural organization and mechanisms of organic coverage on mineral surfaces as well as their development with time are still unclear. We used clay fractions from a soil chronosequence (15, 75 and 120 years) in the foreland of the retreating Damma Glacier (Switzerland) and from mature soils outside the proglacial area (>700 and <3000 years) to elucidate the evolution of organo-mineral associations during initial soil formation. The chemical composition of the clay-bound organic matter (OM) was assessed by solid-state ¹³C NMR spectroscopy while the quantities of amino acids and neutral sugar monomers were determined after acid hydrolysis. The mineral phase was characterized by X-ray diffraction, oxalate extraction, specific surface area by N₂ adsorption (BET approach), and cation exchange capacity at pH 7 (CEC_pH7). The last two methods were applied before and after H₂O₂ treatment. We found pronounced shifts in quantity and quality of OM during aging of the clay fractions, especially within the first one hundred years of soil formation. The strongly increasing organic carbon (OC) loading of clay-sized particles resulted in decreasing specific surface areas (SSA) of the mineral phases and increasing CEC_pH7. Thus, OC accumulation was faster than the supply of mineral surfaces and cation exchange capacity was mainly determined by the OC content. Clay-bound OC of the 15-year-old soils showed high proportions of carboxyl C and aromatic C. This may point to remnants of ancient OC which were inherited from the recently exposed glacial till. With increasing age (75 and 120 years), the relative proportions of carboxyl and aromatic C decreased. This was associated with increasing O-alkyl C proportions, whereas accumulation of alkyl C was mainly detected in clay fractions from the mature soils. These findings from solid-state ¹³C NMR spectroscopy are in line with the increasing amounts of microbial-derived carbohydrates with soil age. The large accumulation of proteins, which was comparable to those of carbohydrates, and the very low C/N ratios of H₂O₂-resistant OM indicated strong and preferential associations between proteinaceous compounds and mineral surfaces. In the acid soils, poorly crystalline Fe oxides were the main providers of mineral surface area and important for the stabilization of OM during aging of the clay fractions. This was indicated by (I) the strong correlations between oxalate soluble Fe and both, SSA of H₂O₂-treated clay fractions and OC content, and (II) the low formation of expandable clays due to small extents of mineral weathering. Our chronosequence approach provided new insights into the evolution of organo-mineral interactions in acid soils. The formation of organo-mineral associations started with the sorption of proteinaceous compounds and microbial-derived carbohydrates on mineral surfaces which were mainly provided by ferrihydrite. The sequential accumulation of different organic compounds and the large OC loadings point to multiple accretion of OM in distinct zones or layers during the initial evolution of clay fractions.

DOI: 10.1016/j.gca.2012.01.046

12071447 Ulrich, M. (Alfred Wegener Institute for Polar and Marine Research, Research Unit Potsdam, Potsdam, Germany); Wagner, D.; Hauber, E.; de Vera, J. P. and Schirrmeister, L. Habitable periglacial landscapes in Martian mid-latitudes: Icarus, 219(1), p. 345-357, illus. incl. 2 tables, sketch map, 117 ref., May 2012.

DOI: 10.1016/j.icarus.2012.03.019

12071420 Yang Yonggang (Shanxi University, Institute of Loess Plateau, Shanxi, China); Xiao Honglang; Wei, Yongping; Zhao Liangju; Zou Songbing; Yang Qiu and Yin Zhenliang. Hydrological processes in the different landscape zones of alpine cold regions in the wet season, combining isotopic and hydrochemical tracers: Hydrological Processes, 26(10), p. 1457-1466, illus. incl. 2 tables, sketch map, 24 ref., May 15, 2012.

Studies on hydrological processes are often emphasized in resource and environmental studies. This paper identifies the hydrological processes in different landscape zones during the wet season based on the isotopic and hydrochemical analysis of glacier, snow, frozen soil, groundwater and other water sources in the headwater catchment of alpine cold regions. Hydrochemical tracers indicated that the chemical compositions of the water are typically characterized by: (1) Ca-HCO₃ type in glacier snow zone, (2) Mg-Ca-SO₄ type for surface runoff and Ca-Mg-HCO₃ type for groundwater in alpine desert zone, (3) Ca-Mg-SO₄ type for surface water and Ca-Mg-HCO₃ type for groundwater in alpine shrub zone, and (4) Ca-Na-SO₄ type in surface runoff in the alpine grassland zone. The End-Members Mixing Analysis (EMMA) was employed for hydrograph separation. The results showed that the Mafengou River in the wet season was mainly recharged by groundwater in alpine cold desert zones and shrub zones (52%), which came from the infiltration and transformation of precipitation, thawed frozen soil water and glacier-snow meltwater. Surface runoff in the glacier-snow zone accounted for 11%, surface runoff in alpine cold desert zones and alpine shrub meadow zones accounted for 20%, thawed frozen soil water in alpine grassland zones accounted for 9% of recharge and precipitation directly into the river channel (8%). This study suggested that the whole catchment precipitation did not produce significant surface runoff directly, but mostly transformed into groundwater or interflow, and finally arrived in the river channel. Abstract Copyright (2010), John Wiley & Sons, Ltd.

DOI: 10.1002/hyp.8275

12069046 Zhou Houyun (South China Normal University, School of Geography, Guangzhou, China); Greig, Alan; Tang Jing; You Chenfeng; Yuan Daoxian; Tong Xiaoning and Huang Ying. Rare earth element patterns in a Chinese stalagmite controlled by sources and scavenging from karst ground water: Geochimica et Cosmochimica Acta, 83, p. 1-18, illus. incl. 4 tables, sketch map, 55 ref., April 15, 2012.

The rare earth elements and yttrium (REY) in a Chinese stalagmite (SJ3) have been studied to delineate their possible sources and controlling mechanisms. The following results are obtained: (1) The REY in karst groundwater at the study site have very low concentrations, e.g. ranging from 59´10^-6 to 614´10^-6mmol/L for La, and are transported predominantly in particle/colloidal phases.These elements show a high linear positive correlation with Fe, Mn and Al (r²=0.98, 0.95 and 0.91, respectively), which are also transported largely in particle/colloidal phases, suggesting a close association of REY with Fe, Mn and Al in colloidal/particle phases; (2) REY mobilization from the sources, i.e. the limestone host rock and the overlying soil layer, may not have exerted a significant influence on the REY patterns for SJ3 including anomalies of La, Ce and Y and fractionation between light and heavy REY; (3) The REY patterns of SJ3 display significant variations which are controlled in part by change in contributions from the limestone host rock and the overlying soil layer and can be associated with stadial-interstadial changes in past climate and environment. The REY contribution from the overlying soil layer is higher under a warm-humid climate phase than a cold-dry one and the REY contribution from the limestone host rock is reversed; (4) Some of the variations of the SJ3 REY patterns could not be explained with a simple mixing of different REY sources. Removal of REY from the groundwater in association with precipitation of colloidal and particle materials, an analogue to REY scavenging from seawater, is the most important mechanism influencing the SJ3 REY patterns. Strong REY "scavenging", which may be caused by both less dynamic hydrology, longer travel-time and increased ionic strength of karst groundwater, is suggested to be responsible for the large positive Y anomalies and negative Ce anomalies and depletion of light REE relative to heavy REE during the cold-dry climate phases (e.g. the periods corresponding to the last glacial maximum and Heinrich event 1).

DOI: 10.1016/j.gca.2011.12.027

12067142 Guglielmin, Mauro (Insubria University, Department of Chemical and Environmental Sciences, Varese, Italy) and Cannone, Nicoletta. A permafrost warming in a cooling Antarctica?: Climatic Change, 111(2), p. 177-195, illus. incl. 3 tables, 47 ref., March 2012.

The magnitude and even direction of recent Antarctic climate change is still debated because the paucity of long and complete instrumental data records. While along Antarctic Peninsula a strong warming coupled with large retreat of glaciers occurred, in continental Antarctica a cooling was recently detected. Here, the first existing permafrost data set longer than 10 years recorded in continental Antarctica is presented. Since 1997 summer ground surface temperature showed a strong warming trend (0.31°C per year) although the air temperature was almost stable. The summer ground surface temperature increase seemed to be influenced mainly by the increase of the total summer radiation as confirmed also by the increase of the summer thawing degree days. In the same period the active layer exhibited a thickening trend (1 cm per year) comparable with the thickening rates observed in several Arctic locations where air warming occurred. At all the investigated depths permafrost exhibited an increase of mean annual temperature of approximately 0.1°C per year. The dichotomy between active layer thickness and air temperature trends can produce large unexepected and unmodelled impacts on ecosystems and CO₂ balance. Copyright 2011 Springer Science+Business Media B.V.

DOI: 10.1007/s10584-011-0137-2

12067172 Iida, Toshiaki (University of Tokyo, Graduate School of Agricultural and Life Sciences, Tokyo, Japan); Kajihara, Akihiko; Okubo, Hiroshi and Okajima, Kenji. Effect of seasonal snow cover on suspended sediment runoff in a mountainous catchment: Journal of Hydrology, 428-429, p. 116-128, illus. incl. 5 tables, sketch map, 40 ref., March 27, 2012.

The effect of snow cover and snowmelt on suspended sediment (SS) runoff at a mountainous catchment in the temperate zone was investigated. The observation was carried out from March 1999 to May 2002 (3 years) at an experimental catchment with the area of 0.347 km² ranging from 280 m to 618 m above mean sea level with average stream gradient of 1/4. It was concluded that the snow accumulation and ablation process in the catchment had a significant impact on SS runoff characteristics especially during the snow-melting period. It was estimated that more than 60% of the annual SS load flowed out during the snow-melting period because of the enhanced water discharge. The daily average SS flux during the snow-melting period was calculated to be 2.54 g s^-1km^-2, corresponding to a 6-7 times greater SS flux than that during other periods. The C-Q relation analysis in each runoff event revealed a dynamic change in the SS runoff mechanism during the snow-melting period. Strong clockwise hysteresis in C-Q relation in the early stage of the snow-melting period may be explained by consumption of the bed load by the first flush followed by quick depletion of the material on the stream bed due to suppression of further SS supply by thick snow cover. Counterclockwise hysteresis in C-Q relation was observed only in the late stage of the snow-melting period. SS production at steep slopes beside the stream by avalanches and surface soil slides, induced by an abundance of meltwater, was considered to be one of the main causes of the counterclockwise loops. It would be hypothesized that exposure of other steep slopes or bluffs in the catchment apart from the stream and stream bank failure by repeating surges of the stream water stage could also be other possible SS sources causing counterclockwise hysteresis in the late snow-melting period.

DOI: 10.1016/j.jhydrol.2012.01.029

12067209 Jin, Lixin (University of Texas at El Paso, Department of Geological Sciences, El Paso, TX); Mukasa, Samuel B.; Hamilton, Stephen K. and Walter, Lynn M. Impacts of glacial/interglacial cycles on continental rock weathering inferred using Sr/Ca and ⁸⁷Sr/⁸⁶Sr ratios in Michigan watersheds: Chemical Geology, 300-301, p. 97-108, illus. incl. 4 tables, sketch map, 43 ref., March 18, 2012. Includes appendices.

Michigan soils have developed on thick glacial-drift deposits that include different proportions of ground granite and gneiss from the Canadian Shield region (with radiogenic Sr) and carbonate sedimentary rocks from within the Michigan Basin (with non-radiogenic Sr). This study of the Cheboygan, Huron and Kalamazoo watersheds shows how Sr-isotope and Sr/Ca ratios in soil waters, ground waters, and soils reflect relative weathering intensities of the dominant minerals in Michigan soils, including carbonates from the Michigan Basin, and amphibole, plagioclase and K-feldspar derived from the Canadian Shield. Soil water ⁸⁷Sr/⁸⁶Sr ratios evolve quickly to the carbonate weathering end-member (0.709-0.711) once a calcite and dolomite layer is reached at depth (~100-200 cm) in the Huron and the Kalamazoo watersheds. Dissolution of plagioclase and amphibole controls shallow soil water ⁸⁷Sr/⁸⁶Sr ratios (0.711-0.713), with minor contributions from K-feldspar weathering. In contrast, soils in the previously studied Cheboygan watershed are completely depleted in carbonate minerals and contain little plagioclase and amphibole in the top 300 cm of the profile. As a result, soil waters in this watershed are ionically dilute with high ⁸⁷Sr/⁸⁶Sr ratios (0.72 and 0.74), dominantly contributed by K-feldspar dissolution. Subsequent dissolution of plagioclase and amphibole at greater depths sharply increases soil water and ground water Mg²⁺, Ca²⁺, and Sr²⁺ concentrations, and lowers the Sr-isotopic ratios to ~0.709 for the Cheboygan watershed. Similarly, along hydrologic flow paths, soil water Sr/Ca ratios move from the silicate end-member (defined by amphibole and plagioclase) towards the carbonate end-member. The Sr-isotopic compositions and Sr/Ca ratios of soil waters thus reveal the types, directions and extent of chemical weathering processes in Michigan soils, augmenting information from previous soil water chemistry and soil mineralogy studies. This work also highlights the two-fold impacts of glacial/interglacial cycles on the riverine and oceanic Sr isotopes: due to the great extent of continental glaciation, Paleozoic carbonate minerals from the Michigan Basin were redistributed widely within the interior of the North American continent, leading to elevated Sr fluxes with lower Sr-isotopic ratios in natural waters after glacial retreat. The glacial ice also ground up the ancient Precambrian Canadian Shield, accelerating mineral weathering rates and releasing highly radiogenic Sr from K-feldspar.

DOI: 10.1016/j.chemgeo.2012.01.017

12068893 Hollis, J. M. (Consultant, St. Albans, United Kingdom); Hannam, J. and Bellamy, P. H. Empirically-derived pedotransfer functions for predicting bulk density in European soils: European Journal of Soil Science, 63(1), p. 96-109, illus. incl. 10 tables, 30 ref., February 2012.

DOI: 10.1111/j.1365-2389.2011.01412.x

12069091 Majorowicz, Jacek (University of Alberta, Department of Physics, Edmonton, AB, Canada); Safanda, Jan and Osadetz, Kirk. Inferred gas hydrate and permafrost stability history models linked to climate change in the Beaufort-Mackenzie Basin, Arctic Canada: Climate of the Past, 8(2), p. 667-682, illus. incl. 1 table, sketch map, 43 ref., 2012. Includes appendix; published in Climate of the Past Discussion: 15 September 2011, URL: http://www.clim-past-discuss.net/7/2863/2011/cpd-7-2863-2011.html; accessed in June, 2012.

Atmospheric methane from episodic gas hydrate (GH) destabilization, the "clathrate gun" hypothesis, is proposed to affect past climates, possibly since the Phanerozoic began or earlier. In the terrestrial Beaufort-Mackenzie Basin (BMB), GHs occur commonly below thick ice-bearing permafrost (IBP), but they are rare within it. Two end-member GH models, where gas is either trapped conventionally (Case 1) or where it is trapped dynamically by GH formation (Case 2), were simulated using profile (1-D) models and a 14 Myr ground surface temperature (GST) history based on marine isotopic data, adjusted to the study setting, constrained by deep heat flow, sedimentary succession conductivity, and observed IBP and Type I GH contacts in Mallik wells. Models consider latent heat effects throughout the IBP and GH intervals. Case 1 GHs formed at ~0.9 km depth only ~1 Myr ago by in situ transformation of conventionally trapped natural gas. Case 2 GHs begin to form at ~290-300 m ~6 Myr ago in the absence of lithological migration barriers. During glacial intervals Case 2 GH layers expand both downward and upward as the permafrost grows downward through and intercalated with GHs. The distinctive model results suggest that most BMB GHs resemble Case 1 models, based on the observed distinct and separate occurrences of GHs and IBP and the lack of observed GH intercalations in IBP. Case 2 GHs formed >255 m, below a persistent ice-filled permafrost layer that is as effective a seal to upward methane migration as are Case 1 lithological seals. All models respond to GST variations, but in a delayed and muted manner such that GH layers continue to grow even as the GST begins to increase. The models show that the GH stability zone history is buffered strongly by IBP during the interglacials. Thick IBP and GHs could have persisted since ~1.0 Myr ago and ~4.0 Myr ago for Cases 1 and 2, respectively. Offshore BMB IBP and GHs formed terrestrially during Pleistocene sea level low stands. Where IBP is sufficiently thick, both IBP and GHs persist even where inundated by a Holocene sea level rise and both are also expected to persist into the next glacial even if atmospheric CO₂ doubles. We do not address the "clathrate gun" hypothesis directly, but our models show that sub-IBP GHs respond to, rather than cause GST changes, due to both how GST changes propagates with depth and latent heat effects. Models show that many thick GH accumulations are prevented from contributing methane to the atmosphere, because they are almost certainly trapped below either ice-filled IBP or lithological barriers. Where permafrost is sufficiently thick, combinations of geological structure, thermal processes and material properties make sub-IBP GHs unlikely sources for significant atmospheric methane fluxes. Our sub-IBP GH model histories suggest that similar models applied to other GH settings could improve the understanding of GHs and their potential to affect climate.

URL: http://www.clim-past.net/8/667/2012/cp-8-667-2012.pdf

12067221 Ikeda, Atsushi (University of Tsukuba, Faculty of Life and Environmental Sciences, Tsubuka, Japan) and Nishii, Ryoko. Radiocarbon dates for rock-glaciers around Mt. Mibudake, southern Japanese Alps: Daiyonki-Kenkyu = Quaternary Research, 50(6), p. 309-317, (Japanese) (English sum.), illus. incl. sects., 1 plate, 1 table, sketch map, 40 ref., December 2011.

Two relict rock glaciers, which are indicators of a former permafrost environment, were ¹⁴C-dated around Mt. Mibudake, southern Japanese Alps, using accelerator mass spectrometry. Three samples for dating were collected from the boundary between the deposit of the north rock-glacier and the underlying bedrock. Two of those samples indicate 11 cal ka BP, and the other one indicates 18 cal ka BP. A sample dated 10 cal ka BP was also taken from the steep frontal slope of the south rock-glacier which fills a cirque bottom. Considering the timing of the cirque formation and the mechanisms of rockglacier advance, we conclude that the south rock-glacier developed in the Late Glacial, whereas the timing of the north rock-glacier advance was sometime from the Last Glacial Maximum to the early Holocene.

12067003 Zosin, A. P. (Russian Academy of Sciences, Kola Science Center, Institute of Industrial Ecology in the North, Apatity, Russian Federation); Priymak, T. I.; Masloboyev, V. A.; Sulimenko, L. P. and Mingaleva, T. A. Kompleksnaya otsenka vliyaniya poligona TBPO na ekologicheskuyu obstanovku rayona v usloviyakh Kraynego Severa [Comprehensive assessment of regional ecological impact of solid waste disposal in the Russian Arctic]: Geoekologiya (Moskva), 2011(6), p. 499-511 (English sum.), illus. incl. 3 tables, 8 ref., December 2011.

The degree of pollution of air, soil, and sewage water was calculated and analyzed for the landfill of solid domestic and industrial waste, located in the Apatity-Kirovsk region, Murmansk oblast, at a distance of 0.7 km from the town of Apatity, in the lower reaches of Belaya River. The literature data are provided on the specifics of heavy metal migration in the dump area and on the complex processes ongoing in the dump body, taking into consideration the principal factors (the location and age of dump; the formation and quality of sewage water). The quality of atmospheric air in the area of landfill was assessed proceeding from the analysis of developed database on the emission sources parameters. Processing the total database encompassing the entire territory of the landfill permitted us to choose the priority sources to be controlled upon the subsequent operation of dump. A number of measures for providing the safe running of dump were also suggested.

12068463 Pierce, Kenneth L. (U. S. Geological Survey, Bozeman, MT); Muhs, Daniel R.; Fosberg, Maynard A.; Mahan, Shannon A.; Rosenbaum, Joseph G.; Licciardi, Joseph M. and Pavich, Milan J. A loess-paleosol record of climate and glacial history over the past two glacial-interglacial cycles (~150 ka), southern Jackson Hole, Wyoming: Quaternary Research, 76(1), p. 119-141, illus. incl. 3 tables, sketch map, 105 ref., July 2011.

Loess accumulated on a Bull Lake outwash terrace of Marine Oxygen Isotope Stage 6 (MIS 6) age in southern Jackson Hole, Wyoming. The 9 m section displays eight intervals of loess deposition (Loess 1 to Loess 8, oldest), each followed by soil development. Our age-depth model is constrained by thermoluminescence, meteoric ¹⁰Be accumulation in soils, and cosmogenic ¹⁰Be surface exposure ages. We use particle size, geochemical, mineral-magnetic, and clay mineralogical data to interpret loess sources and pedogenesis. Deposition of MIS 6 loess was followed by a tripartite soil/thin loess complex (Soils 8, 7, and 6) apparently reflecting the large climatic oscillations of MIS 5. Soil 8 (MIS 5e) shows the strongest development. Loess 5 accumulated during a glacial interval (~76-69 ka; MIS 4) followed by soil development under conditions wetter and probably colder than present. Deposition of thick Loess 3 (~43-51 ka, MIS 3) was followed by soil development comparable with that observed in Soil 1. Loess 1 (MIS 2) accumulated during the Pinedale glaciation and was followed by development of Soil 1 under a semiarid climate. This record of alternating loess deposition and soil development is compatible with the history of Yellowstone vegetation and the glacial flour record from the Sierra Nevada.

DOI: 10.1016/j.yqres.2011.03.006

12068448 Bronnikova, M. A. (Russian Academy of Sciences, Institute of Geography, Moscow, Russian Federation); Turova, I. V.; Kuznetsova, E. P.; Kozlov, D. N. and Khokhlova, O. S. Soils of cryogenic subarid steppe landscapes in the Terekhol intermontane depression of the Sangilen Upland: Eurasian Soil Science, 44(6), p. 589-603, illus., 25 ref., June 2011. Based on Publisher-supplied data.

The soil cover of the Terekhol intermontane Depression in the Tyva Region is poorly studied. The data obtained in the 1950s do not reflect the real genetic diversity of soils and their specific character. According to these data, the soil cover was dominated by meadow-chernozemic soils under virgin steppe-like meadows. The investigations of 2007-2009 show that the disperse-carbonate chernozems, which are often solonetzic and weakly saline; the specific polygenetic dark soda solonchaks-solonetzes; and the postagrogenic chernozems, solonetzes, and agrozems are the main components of the soil cover of the depression at the present time. The described chernozems correspond mainly to the central image of southern Siberia chernozems. The investigated solonetzes are characterized by a number of evolution-genetic features that distinguish them from previously described solonetzes of Tyva and from all the solonetzic soils in the current interpretation. The chernozems and solonetzes have cryogenic features due to the cold extremely continental climate and relatively shallow continuous permafrost. Copyright 2011 Pleiades Publishing, Ltd.

DOI: 10.1134/S1064229311060032

12068451 Shamrikova, E. V. (Russian Academy of Sciences, Institute of Biology, Syktyvkar, Russian Federation); Kazakov, V. G. and Sokolova, T. A. Variation in the acid-base parameters of automorphic loamy soils in the taiga and tundra zones of the Komi Republic: Eurasian Soil Science, 44(6), p. 641-653, illus., 74 ref., June 2011. Based on Publisher-supplied data.

A database for the main genetic horizons of loamy automorphic soddy-podzolic, typical podzolic, gley-podzolic, and surface-gley tundra soils of the Komi Republic was developed on the basis of the available archive and literature data and unpublished results of the authors. The database included the following parameters: the pH_water and pH_KCl, the exchangeable and total acidity, and the degree of SEC saturation. All the parameters were characterized by normal distribution types. The variation coefficients V for the pH_water and pH_KCl were <10%. For the exchangeable and total acidities and the degree of SEC saturation, the V values varied among the soils and horizons in the range of 10-50%. The greatest differences in the acid-base properties of all the soils were revealed between the groups of organic horizons, the eluvial horizons, and the B horizon by the cluster analysis. Between the separate subtypes of podzolic soils, the maximum differences were observed in the organic and, to a lesser extent, eluvial horizons; the B horizons of the different soils in the taiga and tundra zones did not significantly differ in these terms. For the entire profiles, the highest similarity was found between the typical podzolic and gley-podzolic soils, which were more similar to the automorphic soils of the tundra zone than to soddy-podzolic soils. Copyright 2011 Pleiades Publishing, Ltd.

DOI: 10.1134/S1064229311060111

12068405 Hallet, Bernard (University of Washington, Quaternary Research Center, Seattle, WA); Sletten, Ronald S. and Whilden, Kevin. Micro-relief development in polygonal patterned ground in the Dry Valleys of Antarctica: in Special issue on Periglacial processes, landforms, and environments in honor of Link Washburn (Hallet, Bernard, editor; et al.), Quaternary Research, 75(2), p. 347-355, illus., 45 ref., March 2011.

Polygonal patterned ground in polar regions of both Earth and Mars has received considerable attention. In comparison with the size, shape, and arrangement of the polygons, the diverse micro-relief and topography (termed here simply "relief") of polygonal patterned ground have been understudied. And yet, the relief reflects important conditions and processes occurring directly below the ground surface, and it can be observed readily in the field and through remote sensing. Herein, we describe the relief characteristic of the simplest and relatively young form of patterned ground in the Dry Valleys of Antarctic. We also develop a numerical model to examine the generation of relief due to subsurface material being shouldered aside contraction cracks by incremental sand wedges growth, and to down-slope creep of loose granular material on the surface. We model the longterm subsurface deformation of ice-cemented permafrost as a non-linear viscous material. Our modeling is guided and validated using decades of field measurements of surface displacements of the permafrost and relief. This work has implications for assessing the activity of surfaces on Earth and Mars, and much larger scale potential manifestations of incremental wedging in icy material, namely the distinct paired ridges on Europa.

DOI: 10.1016/j.yqres.2010.12.009

12068404 Lewkowicz, Antoni G. (University of Ottawa, Department of Geography, Ottawa, ON, Canada). Slope hummock development, Fosheim Peninsula, Ellesmere Island, Nunavut, Canada: in Special issue on Periglacial processes, landforms, and environments in honor of Link Washburn (Hallet, Bernard, editor; et al.), Quaternary Research, 75(2), p. 334-346, illus. incl. 2 tables, sketch map, 43 ref., March 2011.

Slope hummocks, a type of nonsorted patterned ground, are composed of stratified, organic, silty sand, and develop through the interaction of niveo-eolian deposition, solifluction, slopewash, and vegetation growth. Fields of hummocks show consistent patterns: forms on convex slopes increase in height downslope until the channel is reached, whereas those on convexo-concave slopes increase on the upper convexity but are buried by niveo-eolian deposition downslope of the snowbank remnant. These trends can be reproduced using a simple numerical model based on measured slope and snow depth profiles, sediment concentrations in the snow and solifluction rates. The model indicates that hummocks transit slopes of 20-40 m in about 2-4 ka, a time-frame that is plausible given site emergence, measured rates of solifluction, and published dates for organic horizons within hummocks on northern Ellesmere Island. Sensitivity analyses show that long-term effect of climate warming on hummock heights may differ depending on whether it is accompanied by precipitation increase or decrease. The required combination of two-sided freezing to promote plug-like movement, incomplete vegetation cover and thin snow that enable eolian erosion during winter and spring, and vegetation growth in snow-bed sites to stabilize niveo-eolian deposits may explain why these forms are important regionally but apparently are not present throughout the Arctic.

DOI: 10.1016/j.yqres.2010.12.013

12068406 Matsuoka, Norikazu (University of Tsukuba, Graduate School of Life and Environmental Sciences, Tsukuba, Japan). Climate and material controls on periglacial soil processes; toward improving periglacial climate indicators: in Special issue on Periglacial processes, landforms, and environments in honor of Link Washburn (Hallet, Bernard, editor; et al.), Quaternary Research, 75(2), p. 356-365, illus. incl. 1 table, 109 ref., March 2011.

One of the distinguished efforts of A.L. Washburn was to reconstruct mean annual air temperature using periglacial features as climate indicators. This paper reviews existing periglacial indicators and proposes a strategy to improve their thermal resolution based on recent periglacial process studies, with a focus on solifluction and thermal contraction cracking and associated landforms/structures. Landforms resulting from solifluction reflect both the depth subjected to freeze-thaw and the thickness of frost-susceptible soils. The thickness of a solifluction structure can be used to infer the dominant freeze-thaw regime and minimum seasonal frost depth. Ice-wedge pseudomorphs have limited potential as a climate indicator because (1) they mainly reflect extreme winter temperatures, (2) their thermal thresholds depend on the host material, and (3) they need to be distinguished from frost wedges of other origin produced under different thermal and/or material conditions. Monitoring studies of currently active ice wedges suggest that ice-wedge cracking requires a combination of low temperature and large temperature gradients in the frozen active layer. Further field monitoring of periglacial processes and their controlling factors under various climate conditions and in various materials are needed, however, to improve the resolution of periglacial paleoclimate indicators.

DOI: 10.1016/j.yqres.2010.12.014

12068414 Mergelov, N. S. (Russian Academy of Sciences, Institute of Geography, Moscow, Russian Federation) and Targulian, V. O. Accumulation of organic matter in the mineral layers of permafrost-affected soils of coastal lowlands in east Siberia: Eurasian Soil Science, 44(3), p. 249-260, illus., 57 ref., March 2011. Based on Publisher-supplied data.

On the basis of a large volume of literature and original data, the high content (1-7%) of organic matter in the mineral layer of loamy permafrost-affected soils of coastal lowlands in East Siberia (from the lower reaches of the Lena River to the lower reaches of the Kolyma River) has been statistically proved. In most cases, the reserves of C_org in the mineral layer of these soils exceed those in the surface organic horizons and constitute 60-90% of the total soil pool of C_org. The enrichment of the mineral layer with C_org is due to the cryogenic retention (retenization) of humus (the illuviation and accumulation of colorless humic substances above permafrost) and the cryogenic mass exchange (mechanical admixture of organic matter from the upper organic horizons into the mineral layers). The analysis of 60 soil profiles showed that the accumulation of organic matter above the permafrost table is observed in 43% of cases; in general, the organic matter distribution in the soil profiles is highly variable. A specific type of colorless humus is accumulated above the permafrost table. The mechanisms of its precipitation and transformation in the profile require further studies. Copyright 2011 Pleiades Publishing, Ltd.

DOI: 10.1134/S1064229311030069

12068410 Murton, Julian B. (University of Sussex, Department of Geography, Brighton, United Kingdom) and Belshaw, Roger K. A conceptual model of valley incision, planation and terrace formation during cold and arid permafrost conditions of Pleistocene southern England: in Special issue on Periglacial processes, landforms, and environments in honor of Link Washburn (Hallet, Bernard, editor; et al.), Quaternary Research, 75(2), p. 385-394, illus. incl. sketch map, 78 ref., March 2011.

Staircases of gravelly river terrace deposits in southern England occupy valleys typically underlain by frost-susceptible and brecciated bedrocks. The valleys developed during the Quaternary by alternating episodes of (1) brecciation, incision and planation through the bedrock, forming wide low-relief erosion surfaces; and (2) aggradation in braidplains of gravel a few meters thick that bury the erosion surfaces. A conceptual model to account for some of the terraces proposes that brecciation resulted from ice segregation in the ice-rich layer in the upper meters of Pleistocene permafrost, making them vulnerable to fluvial thermal erosion and therefore predisposing the bedrock to planation. The low gradients of the valleys were adjusted such that rivers transferred fine materials out of the basins but lacked the competence to remove gravel, which therefore accumulated within floodplains. The model challenges the prevailing view of incision during climate transitions. It attributes incision and planation to very cold and arid permafrost conditions, when rivers had limited discharges and hillslopes supplied limited volumes of stony debris into valley bottoms.

DOI: 10.1016/j.yqres.2010.10.002

12068403 Peterson, Rorik A. (University of Alaska-Fairbanks, Fairbanks, AK). Assessing the role of differential frost heave in the origin of non-sorted circles: in Special issue on Periglacial processes, landforms, and environments in honor of Link Washburn (Hallet, Bernard, editor; et al.), Quaternary Research, 75(2), p. 325-333, illus., 38 ref., March 2011.

A. L. Washburn famously proposed and reviewed 19 hypotheses for the origin of patterned ground in periglacial environments over 50 ears ago (Washburn, 1956). Of these 19 mechanisms, only a few have been analyzed starting from a fundamental description of the physics to assess their potential contribution to the initiation of patterned ground. Here, differential frost heave (DFH) is investigated as the origin of non-sorted circles in periglacial landscapes. Model results indicating that DFH can spontaneously lead to patterned ground are compared to measurements of patterned ground in the Canadian Arctic Archipelago. The characteristic size of the predicted emerging pattern depends strongly on the maximum depth of freezing but is only weakly dependent on the soil composition. The predicted emerging patterns may also be dramatically different in size with a small change in active layer when a relatively thin (~10 cm) insulating snow covers the ground during freezing. The model predicted trends agree with field observations of pattern size and active layer depth at two distinct sites. Although two data points cannot conclusively indicate a trend, this correlation gives support for the possibility of determining some subsurface properties using remote sensing images of surface patterned ground.

DOI: 10.1016/j.yqres.2010.08.003

12068408 Pissart, Albert (University of Liege, Department of Geography, Liege, Belgium); Calmels, Fabrice and Wastiaux, Cécile. The potential lateral growth of lithalsas: in Special issue on Periglacial processes, landforms, and environments in honor of Link Washburn (Hallet, Bernard, editor; et al.), Quaternary Research, 75(2), p. 371-377, illus., 26 ref., March 2011.

The lithalsas in the Hudson Bay region of northern Quebec, Canada, are the closest modern analogs of ancient features that collapsed to form conspicuous circular depressions ("viviers") common in the Hautes-Fagnes, a region in Belgium. Observations made in both regions are complementary and suggest that these mounds formed by frost heaving displacing soil not only upward, as previously assumed, but also laterally. This lateral displacement is consistent with diverse observations and inferences, which include (1) the simple rounded outline, either circular or oval, typical of both active and relic lithalsas; (2) evidence of local lateral extension inferred from exposures of the relic forms; (3) the relative inefficiency of solifluction in accumulating surface material to form the peripheral ramparts of remnant lithalsas due to the very gentle slopes of the mounds; and (4) the dip of ice lenses within a lithalsa in the Hudson Bay region, perhaps indicating that the freezing front dipped outward along its periphery. The growth of segregation ice is the primary driver for the vertical growth and lateral enlargement of a lithalsa.

DOI: 10.1016/j.yqres.2011.01.001

12068402 Rempel, Alan W. (University of Oregon, Department of Geological Sciences, Eugene, OR). Microscopic and environmental controls on the spacing and thickness of segregated ice lenses: in Special issue on Periglacial processes, landforms, and environments in honor of Link Washburn (Hallet, Bernard, editor; et al.), Quaternary Research, 75(2), p. 316-324, illus., 31 ref., March 2011.

The formation of segregated ice is of fundamental importance to a broad range of permafrost and periglacial features and phenomena. Models have been developed to account for the microscopic interactions that drive water migration, and predict key macroscopic characteristics of ice lenses, such as their spacings and thicknesses. For a given set of sediment properties, the temperature difference between the growing and incipient lenses is shown here to depend primarily on the ratio between the effective stress and the temperature deviation from bulk melting at the farthest extent of pore ice. This suggests that observed spacing between ice lenses in frozen soils, or traces of lenses in soils that once contained segregated ice, might be used to constrain the combinations of effective stress and temperature gradient that were present near the time and location at which the lower lens in each pair was initiated. The thickness of each lens has the potential to contain even more information since it depends additionally on the rate of temperature change and the permeability of the sediment at the onset of freezing. However, these complicating factors make it more difficult to interpret thickness data in terms of current or former soil conditions.

DOI: 10.1016/j.yqres.2010.07.005

12068407 Seppala, Matti (University of Helsinki, Department of Geosciences and Geography, Helsinki, Finland). Synthesis of studies of palsa formation underlining the importance of local environmental and physical characteristics: in Special issue on Periglacial processes, landforms, and environments in honor of Link Washburn (Hallet, Bernard, editor; et al.), Quaternary Research, 75(2), p. 366-370, illus., 43 ref., March 2011.

This review presents a synthesis of four decades of palsa studies based on field experiments and observations mainly in Fennoscandia, as well as laboratory measurements. Palsas are peat-covered mounds with a permanently frozen core; in Finnish Lapland, they range from 0.5 to 7 m in height and from 2 to 150 m in diameter. These small landforms are characteristic of the southern margin of the discontinuous permafrost zone. Palsa formation requires certain environmental conditions: long-lasting air temperature below 0°C, thin snow cover, and low summer precipitation. The development and persistence of their frozen core is sensitive to the physical properties of peat. The thermal conductivity of wet and frozen peat is high, and it decreases significantly as the peat dries and thaws. This affects the development of the active layer and makes its response to climate change complex. The insulating properties of dry peat during hot and dry summers moderate the thawing of the active layer on palsas. In contrast, humid and wet weather during the summer causes deep thawing and may destroy the frozen core of palsas. Ice layers in palsas have previously been interpreted as ice segregation features but because peat is not frost-susceptible, the ice layers are now reinterpreted as resulting from ice growth at the base of a frozen core that is effectively floating in a mire.

DOI: 10.1016/j.yqres.2010.09.007

12069613 Lundquist, Jessica D. (University of Washington, Civil and Environmental Engineering, Seattle, WA) and Loheide, Steven P., II. How evaporative water losses vary between wet and dry water years as a function of elevation in the Sierra Nevada, California, and critical factors for modeling: in Water resources in the Murray-Darling Basin; past, present, and future (Roderick, Michael L., prefacer), Water Resources Research, 47, Citation W00H09, illus. incl. 3 tables, 59 ref., 2011.

High altitude basins in the Sierra Nevada, California, have negligible summer precipitation and very little groundwater storage, making them ideal laboratories for indirectly monitoring changes in evaporative losses between wet and dry years. Dry years typically have greater potential evapotranspiration (ET) due to warmer June and July air temperatures, warmer summer water/soil temperatures, greater solar radiation exposure due to less frequent cloud cover, greater vapor pressure deficit, and longer growing seasons. However, dry years also have limited moisture availability compared to wetter years, and thus actual evapotranspiration is much less than the potential in dry years. The balance of these factors varies with elevation. Here, we use gridded temperature, precipitation, and snow data, along with historic streamflow records in two nested basins of the Merced River, California, and a simple model to determine the following: Annual ET increases in wetter years at midelevations (2100-2600 m), but this pattern can only be represented in model simulations that include some representation of water transfer between higher and lower elevation soil reservoirs. At higher elevations (>2600 m), greater water availability in wet years is offset by shorter growing seasons due to longer snow cover duration. These results suggest that models seeking to represent changes in ET in mountainous terrain must, at a minimum, include both hillslope processes (water transfer down steep slopes) and snow processes (timing of water and energy supply).

DOI: 10.1029/2010WR010050

12074744 Sheshukov, Aleksey Y. (Kansas State University, Department of Biological and Agricultural Engineering, Manhattan, KS) and Nieber, John L. One-dimensional freezing of nonheaving unsaturated soils; model formulation and similarity solution: Water Resources Research, 47(11), Citation W11519, illus. incl. 1 table, 37 ref., 2011.

Freezing of unsaturated soils is associated with the formation of a moving freezing zone and liquid water flow toward the zone. An equilibrium thermodynamic formulation of coupled flow and heat transport in variably saturated partially frozen porous media is developed and a self-similar solution is derived for the case of a semi-infinite horizontal porous media column with a constant freezing temperature on one boundary. Solutions to the self-similar equations are derived using a Runge-Kutta solution procedure. The solution is found to yield two possible modes distinguished by zones composed of different combinations of ice, liquid water, and air. One of the modes contains three zones: a frozen zone (WI) with just ice and liquid water; a transition zone (AWI) with ice, liquid water, and air; and an unsaturated zone (AW) with liquid water and air. The second mode contains only the WI zone and the AW zone. It is found that the WI zone is a quintessential part of the solution. The AWI zone is found to exist when the advancement of the freezing zone is relatively fast, while it is absent when the zone advances slowly. Predictions of ice saturation and liquid water saturation with the self-similar solution are compared to published experimental data. Pore pressure is calculated as a linear combination of ice pressure and liquid water pressure, and the calculated figures are used to provide a condition for model limitation in the case of incipient ice lens formation. The developed similarity solution provides insight into the mechanics of liquid water movement and pore filling with ice and the conditions for incipient heaving.

DOI: 10.1029/2011WR010512

12071107 Simoni, S. (École Polytechnique Fédérale de Lausanne, School of Architecture, Civil and Environmental Engineering, Lausanne, Switzerland); Padoan, S.; Nadeau, D. F.; Diebold, M.; Porporato, A.; Barrenetxea, G.; Ingelrest, F.; Vetterli, M. and Parlange, M. B. Hydrologic response of an alpine watershed; application of a meteorological wireless sensor network to understand streamflow generation: Water Resources Research, 47(10), Citation W10524, illus. incl. 3 tables, 76 ref., 2011.

A field measurement campaign was conducted from June to October 2009 in a 20 km² catchment of the Swiss Alps with a wireless network of 12 weather stations and river discharge monitoring. The objective was to investigate the spatial variability of meteorological forcing and to assess its impact on streamflow generation. The analysis of the runoff dynamics highlighted the important contribution of snowmelt from spring to early summer. During the entire experimental period, the streamflow discharge was dominated by base flow contributions with temporal variations due to occasional rainfall-runoff events and a regular contribution from glacier melt. Given the importance of snow and ice melt runoff in this catchment, patterns of near-surface air temperatures were studied in detail. Statistical data analyses revealed that meteorological variables inside the watershed exhibit spatial variability. Air temperatures were influenced by topographic effects such as slope, aspect, and elevation. Rainfall was found to be spatially variable inside the catchment. The impact of this variability on streamflow generation was assessed using a lumped degree-day model. Despite the variability within the watershed, the streamflow discharge could be described using the lumped model. The novelty of this work mainly consists in quantifying spatial variability for a small watershed and showing to which extent this is important. When the focus is on aggregated outputs, such as streamflow discharge, average values of meteorological forcing can be adequately used. On the contrary, when the focus is on distributed fields such as evaporation or soil moisture, their estimate can benefit from distributed measurements.

DOI: 10.1029/2011WR010730

12068269 Graham, Alastair G. C. (British Antarctic Survey, Ice Sheets Programme, Cambridge, United Kingdom); Lonergan, Lidia and Stoker, Martyn S. Depositional environments and chronology of late Weichselian glaciation and deglaciation in the central North Sea: Boreas, 39(3), p. 471-491, illus. incl. sects., strat. col., 2 tables, geol. sketch maps, 74 ref., July 2010.

Geological constraints on ice-sheet deglaciation are essential for improving the modelling of ice masses and understanding their potential for future change. Here, we present a detailed interpretation of depositional environments from a new 30-m-long borehole in the central North Sea, with the aim of improving constraints on the history of the marine Late Pleistocene British-Fennoscandian Ice Sheet. Seven units characterize a sequence of compacted and distorted glaciomarine diamictons, which are overlain by interbedded glaciomarine diamictons and soft, bedded to homogeneous marine muds. Through correlation of borehole and 2D/3D seismic observations, we identify three palaeoregimes. These are: a period of advance and ice-sheet overriding; a phase of deglaciation; and a phase of postglacial glaciomarine-to-marine sedimentation. Deformed subglacial sediments correlate with a buried suite of streamlined subglacial bedforms, and indicate overriding by the SE-NW-flowing Witch Ground ice stream. AMS ¹⁴C dating confirms ice-stream activity and extensive glaciation of the North Sea during the Last Glacial Maximum, between c. 30 and 16.2 ¹⁴C ka BP. Sediments overlying the ice-compacted deposits have been reworked, but can be used to constrain initial deglaciation to no later than 16.2 ¹⁴C ka BP. A re-advance of British ice during the last deglaciation, dated at 13.9 ¹⁴C ka BP, delivered ice-proximal deposits to the core site and deposited glaciomarine sediments rapidly during the subsequent retreat. A transition to more temperate marine conditions is clear in lithostratigraphic and seismic records, marked by a regionally pervasive iceberg-ploughmarked erosion surface. The iceberg discharges that formed this horizon are dated to between 13.9 and 12 ¹⁴C ka BP, and may correspond to oscillating ice-sheet margins during final, dynamic ice-sheet decay. Abstract Copyright (2010), The Boreas Collegium.

DOI: 10.1111/j.1502-3885.2010.00144.x

12068273 Zech, Michael (University of Bayreuth, Department of Soil Physics, Bayreuth, Germany); Andreev, Andrei; Zech, Roland; Müller, Stefanie; Hambach, Ulrich; Frechen, Manfred and Zech, Wolfgang. Quaternary vegetation changes derived from a loess-like permafrost palaeosol sequence in northeast Siberia using alkane biomarker and pollen analyses: Boreas, 39(3), p. 540-550, illus. incl. strat. col., sketch map, 72 ref., July 2010.

Alkane biomarker and pollen data were obtained from a 15-m-high and probably c. 240-kyr-old loess-like permafrost palaeosol sequence ('Tumara Palaeosol Sequence', TPS) in northeast Siberia. The alkane results were corrected for degradation effects by applying an end-member model and were evaluated by comparing them with the palynological results. The two data sets are generally in good agreement and suggest that the lower part of the TPS developed mainly under larch forests, whereas the upper part of the sequence reflects the expansion of mammoth steppes during the Weichselian glaciation and finally reforestation during the Lateglacial and the early Holocene. For the lower part of the TPS, the palaeoclimatic interpretation according to modern analogue methods would indicate warm, interglacial conditions, but this is at odds with the climate chronostratigraphy based on a multi-proxy palaeopedological approach and numeric dating. Provided that the correlation of the discussed stratigraphic unit with the Late Saalian glaciation and the Marine Oxygen Isotope Stage 6 is correct, our results suggest that temperature was not a limiting factor for tree growth at that time. Furthermore, it seems very likely that it was not mainly temperature changes but rather increasing aridity and continentality during the course of the last glacial that favoured the expansion of the mammoth steppe. Abstract Copyright (2010), The Boreas Collegium.

DOI: 10.1111/j.1502-3885.2009.00132.x

12070573 Holtvoeth, Jens (University of Liverpool, School of Environmental Sciences, Liverpool, United Kingdom); Vogel, Hendrik; Wagner, Bernd and Wolff, George A. Lipid biomarkers in Holocene and glacial sediments from ancient Lake Ohrid (Macedonia, Albania): Biogeosciences, 7(11), p. 3473-3489, illus. incl. 3 tables, sketch map, 58 ref., 2010. Includes supplement: URL: http://www.biogeosciences.net/7/3473/2010/bg-7-3473-2010-supplement.pdf; part of special issue no. 75, Evolutionary and geological history of Balkan lakes Ohrid and Prespa, edited by Wagner, B., Wilke, T., and Brovkin, V., URL: http://www.biogeosciences.net/special_issue75.html; published in Biogeosciences Discussion: 16 June 2010, URL: http://www.biogeosciences-discuss.net/7/4607/2010/bgd-7-4607-2010.html; accessed in Dec., 2011.

Organic matter preserved in Lake Ohrid sediments originates from aquatic and terrestrial sources. Its variable composition reflects climate-controlled changes in the lake basin's hydrology and related organic matter export, i.e. changes in primary productivity, terrestrial plant matter input and soil erosion. Here, we present first results from lipid biomarker investigations of Lake Ohrid sediments from two near-shore settings: site Lz1120 near the southern shore, with low-lying lands nearby and probably influenced by river discharge, and site Co1202 which is close to the steep eastern slopes. Variable proportions of terrestrial n-alkanoic acids and n-alkanols as well as compositional changes of w-hydroxy acids document differences in soil organic matter supply between the sites and during different climate stages (glacial, Holocene, 8.2 ka cooling event). Changes in the vegetation cover are suggested by changes in the dominant chain length of terrestrial n-alkanols. Effective microbial degradation of labile organic matter and in situ contribution of organic matter derived from the microbes themselves are both evident in the sediments. We found evidence for anoxic conditions within the photic zone by detecting epicholestanol and tetrahymanol from sulphur-oxidising phototrophic bacteria and bacterivorous ciliates and for the influence of a settled human community from the occurrence of coprostanol, a biomarker for human and animal faeces (pigs, sheep, goats), in an early Holocene sample. This study illustrates the potential of lipid biomarkers for future environmental reconstructions using one of Europe's oldest continental climate archives, Lake Ohrid.

URL: http://www.biogeosciences.net/7/3473/2010/bg-7-3473-2010.pdf

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12073224 Melosh, H. Jay (Purdue University, Department of Earth and Atmospheric Sciences, West Lafayette, IN). Planetary surface processes: Cambridge University Press, Cambridge, United Kingdom, 500 p., illus. incl. 35 tables, geol. sketch maps, 400 ref., 2011. ISBN: 978-0-521-51418-7.

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12071242 Hasler, Andreas. Thermal conditions and kinematics of steep bedrock permafrost: Schriftenreihe Physische Geographie, 63, 164 p. (German sum.), illus. incl. 2 tables, 97 ref., Doctoral, 2011, Universität Zürich, Zurich, Switzerland. ISBN: 3-85543-259-7. Includes previously published papers; includes appendices.

Rock fall from permafrost bedrock and stability problems of high-alpine infrastructure raise the demand for understanding how these rock faces evolve in response to climate change and where most critical situations may emerge. However, the processes linking climate and rock instability are still poorly understood and empirical data from mountain permafrost is limited. This thesis on the thermal, hydrological and mechanical processes in steep bedrock permafrost addresses this knowledge gap. It is mainly based on distributed in-situ measurements of temperatures, rock movements and hydrological parameters. For this two wireless sensor network were operated at two field sites (Matterhorn and Jungfraujoch, Swiss Alps) over the past 3 years and acquired datasets of novel quality and with new contents. Additionally, laboratory experiments and numerical simulations of a single ice-filled cleft where set up to investigate the cleft ice evolution under the influence of water percolation. The main findings of these investigations are: i) a significant cooling effect with respect to snow-free surfaces in radiation-exposed rock faces caused by thin snow cover and air ventilation in clefts; ii) high erosion rates of the cleft ice but little warming of the surrounding rock caused by melt water warmed-up before percolation; iii) two temporal patterns of rock movements of which one is novel and attributed to summer heat waves and the percolation of melt water. These findings suggest both, rock thermal conditions and melt-water production as drivers of warming-related rock instabilities.

12071239 Nötzli, Jeannette. Modeling transient three-dimensional temperature fields in mountain permafrost: Schriftenreihe Physische Geographie, 60, 148 p. (German sum.), illus. incl. 2 tables, 146 ref., Doctoral, 2011, Universität Zürich, Zurich, Switzerland. ISBN: 3-85543-256-2. Includes previously published papers; includes appendices.

Permafrost is a common and important thermal phenomenon in the subsurface of high mountains. Mountain permafrost is not directly visible and its measurement and extrapolation in complex and steep mountain terrain is difficult. Assessing and modeling mountain permafrost conditions is therefore an important topic in research. In this study, mountain permafrost is described an analyzed at depth (i.e., below the active layer) with a main focus on the three-dimensional distribution and transient effect from past and potential future climate variations. For this, We designed and tested a modeling procedure that combine distributed surface energy balance based on climate time series and subsurface heat transport by conduction. Due to the Complex Situation in Nature, the modeling procedure is first applied to a number of idealized test cases with simplified topography, typical surface and subsurface characteristics, and different climate change scenarios. The subsequent simulations with real topography include the characterization of permafrost conditions at borehole sites and rock fall starting zones.

12071240 Schneider, Demian. On characteristics and flow dynamics of large rapid mass movements in glacial environments: Schriftenreihe Physische Geographie, 61, 247 p. (German sum.), illus. incl. 1 table, 291 ref., Doctoral, 2011, Universität Zürich, Zurich, Switzerland. ISBN: 3-85543-257-0. Includes previously published papers; includes appendices.

Current developments of the climate involve dramatic changes in the high-mountain cryosphere, such as glacial retreat, permafrost degradation, development of new glacial lakes, release of huge masses of friable and often steep debris, and altered precipitation patterns. Consequences are increased mass turnover rates, characterized by higher frequencies and magnitudes of rock falls, debris flows and slow slope movements, but also by large (V>10⁶ m³) and rapid mass movements such as landslides, rock-, debris- or ice-avalanches and debris flows. Large rapid mass movements in or from glacial and periglacial high mountain environments can be attributed by extraordinary mobility,flow transformations or chain reactions implying high hazard potentials if they are reaching populated areas such as demonstrated by a number of disastrous events during the last decades. The present study concentrates on the propagation and deposition of large rapid mass movements in glacial environments. This includes aspects from general landslide long-run-out mechanisms, several case studies in volcanic and non-volcanic glacial environments, numerical runout modeling, seismic data analysis, physical flow experiments in a vertically rotating drum in the laboratory and an empirical analysis of specific flow characteristics of large rapid mass movements in glacial environments.

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12075256 Abramenko, O. N. (Lomonosov Moscow State University, Geocryological Department, Moscow, Russian Federation); Isaev, V. S. and Komarov, I. A. Permafrost conditions in the polar regions of Mars: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 1-6, illus., 10 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075257 Aleksandrova, N. S. (Lomonosov Moscow State University, Department of Cryolithology and Glaciology, Moscow, Russian Federation). Changes in geocryological conditions along the reconstructed Salekhard-Nadym Railway: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 7-12, illus. incl. 3 tables, sketch map, 5 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075258 Alekseev, S. V. (Russian Academy of Sciences, Institue of the Earth's Crust, Irkutsk, Russian Federation); Alekseeva, L. P. and Kononov, A. M. Cryogenic deformations in the late Cenozoic deposits of the Tunka Depression in the Baikal rift zone: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 13-17, illus. incl. sketch map, 32 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075259 Alekseev, V. A. (Troitsk Institute for Innovation and Fusion Research, Moscow, Russian Federation); Alekseeva, N. G.; Luchsheva, L. N.; Kopeykin, V. V.; Pelehan, L. G.; Rukavishnikov, V. A.; Chechin, V. A. and Krivulin, V. V. Mercury content form the Tunguska meteorite craters and in some Siberian towns: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 19-24, illus. incl. 3 tables, geol. sketch maps, 9 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12069596 Anonymous. Extended abstracts on the Tenth international conference on Permafrost: International Conference on Permafrost (ICOP) Proceedings, 10, Volume 4, 683 p., illus., 2012. ISBN: 978-5-91128-050-5; 978-5-91128-052-9. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation. Individual abstracts within scope are cited separately.

URL: http://www.ticop2012.org/upload/iblock/139/1391c6c7c383114625516343fa8bb670.pdf

12069595 Anonymous. Trudy desyatoy mezhdunarodnoy konferentsii po merzlotovedeniyu [Tenth international conference on Permafrost; papers in Russian]: International Conference on Permafrost (ICOP) Proceedings, 10, Volume 3, 598 p., illus., 2012. ISBN: 978-5-9961-0510-6. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation. Individual papers within scope are cited separately.

URL: http://www.ticop2012.org/upload/iblock/5b3/5b3d87a4c7b0a5723c78f7c3f697cfcc.pdf

12069597 Anonymous. Trudy desyatoy mezhdunarodnoy konferentsii po merzlotovedeniyu [Tenth international conference on Permafrost; papers in Russian]: International Conference on Permafrost (ICOP) Proceedings, 10, Volume 5, 366 p., illus., 2012. ISBN: 978-5-9961-0510-6. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation. Individual abstracts within scope are cited separately.

URL: http://www.ticop2012.org/upload/iblock/ff8/ff84f07a16235351cca4f5276f2b327f.pdf

12075260 Badu, Yu. B. (Lomonosov Moscow State University, Cryolithology and Glaciology Department, Moscow, Russian Federation). Cryogenic strata of gas-bearing structures of northern western Siberia; look to the future: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 25-30, illus. incl. geol. sketch map, 18 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075261 Bosikov, N. P. (Russian Academy of Sciences, Melnikov Permafrost Institute, Yakutsk, Russian Federation). Cryogenic processes along linear structures: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 31-33, illus. incl. 1 table, 6 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075262 Brouchkov, A. V. (Lomonosov Moscow State University, Moscow, Russian Federation); Peterson, A. M.; Glinska, E. V.; Griva, G. I. and Repin, V. E. Biological properties of bacteria isolated form permafrost in central Yakutia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 35-39, illus. incl. 4 tables, 28 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075263 Budantseva, N. A. (Lomonosov Moscow State University, Department of Geography and Geology, Moscow, Russian Federation); Vasilchuk, A. K.; Zemskova, A. M.; Chizhova, Yu. N.; Vasilchuk, Yu. K. and Christiansen, H. H. d¹⁸O variations in late Holocene ice-wedges and winter air temperature variability in the Yamal Peninsula, Russia and in Adventdalen, Svalbard: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 41-45, illus., 12 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075264 Cheverev, V. G. (Lomonosov Moscow State University, Department of Geocryology, Moscow, Russian Federation) and Safronov, E. V. Mathematical simulation of ground freezing with the visualization of cryogenic structure under formation: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 47-50, illus., 8 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075265 Chizhova, Ju. N. (Lomonosov Moscow State University, Moscow, Russian Federation); Vasil'chuk, A. C.; Budantseva, N. A. and Vasil'chuk, Yu. K. Radiocarbon chronology and dynamics of palsas in the Russian European North: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 51-55, illus., 7 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075266 Chuvilin, Evgeny M. (Moscow State University, Moscow, Russian Federation) and Istomin, Vladimir A. Temperature dependence of the equilibrium pore water content in gas hydrate contained sediments: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 57-60, illus. incl. 2 tables, 3 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075267 Dolgikh, G. M. (FundamentStroyArkos, Scientific Production Association, Moscow, Russian Federation); Okunev, S. N. and Strizhkov, S. N. Construction in the cryolithozone using innovative systems of foundation soil thermal stabilization: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 61-64, illus. incl. 1 table, 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075268 Drozdov, Dmitry S. (Russian Academy of Sciences, Earth Cryosphere Institute, Moscow, Russian Federation); Malkova, G. V.; Ukraintseva, N. G. and Korostelev, Yu. V. Permafrost monitoring of southern tundra landscapes in the Russian European north and West Siberia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 65-69, illus. incl. sketch map, 8 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075269 Dyagileva, A. G. (M. K. Ammosov North-Eastern Federal University, Institute of Applied Ecology of the North, Yakutsk, Russian Federation). Specific features of cryogenic soil formation in western Yakutia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 71-74, illus. incl. 3 tables, 3 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075270 Fedorov, A. N. (Russian Academy of Sciences, Melnikov Permafrost Institute, Yakutsk, Russian Federation); Gavriliev, P. P.; Konstantinov, P. Ya.; Hiyama, T.; Iijima, Y. and Iwahana, G. Contribution of thawing permafrost and ground ice to the water balance of young thermokarst lakes in central Yakutia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 75-80, illus. incl. 3 tables, 17 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075271 Galanin, A. A. (Russian Academy of Sciences, Melnikov Permafrost Institute, Yakutsk, Russian Federation). Rock glaciers and permafrost gravitational formations of the Kolyma Upland: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 81-86, illus. incl. geol. sketch maps, 15 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075272 Gavrilev, R. I. (Russian Academy of Sciences, Melnikov Permafrost Institute, Yakutsk, Russian Federation). The method of a short cylindrical probe in thermophysical studies of the bases of dams belonging to northern hydroelectric complexes: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 87-91, illus. incl. 1 table, sketch map, 2 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075273 Gavrilov, A. V. (Lomonosov Moscow State University, Geology Department, Moscow, Russian Federation); Pizhankova, E. I.; Derevyagin, A. Yu. and Chizhov, A. B. Environmental hazards on the coastal plains of northern Yakutia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 93-96, illus. incl. sketch map, 5 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075274 Germogenova, A. Yu. (Republican Agrochemical Research Station, Ministry of Agriculture of Sakha Republic, Russian Federation). Main features of urban pedogenesis in permafrost areas (case Yakutsk City): in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 97-101, illus. incl. 2 tables, 9 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075275 Gevorkyan, S. G. (Fundamentproekt Open Joint-Stock Company, Moscow, Russian Federation). Critical coefficients of stress intensity of frozen soils with natural structure: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 103-106, illus., 14 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075276 Gorbachev, P. A. (Moscow State University of Civil Engineering, Moscow, Russian Federation). Interaction between pile and freezing of frost-susceptible soil with time (taking into account phase change): in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 107-110, illus. incl. 1 table, 4 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075277 Gorelik, J. B. (Russian Academy of Sciences, Earth Cryosphere Institute, Ryumen, Russian Federation). Physical and mechanical processes in cryogenic formations associated with temperature change: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 111-115, 30 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075278 Grebenets, V. I. (Lomonosov Moscow State University, Moscow, Russian Federation); Kislov, A. V. and Shmelev, D. G. The change of geotechnical-geocryological parameters of permafrost foundations in the western sector of Russia's cryolithozone by 2050: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 117-121, illus., 14 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075279 Gubarkov, A. A. (Tyumen State Oil and Gas University, Tyumen, Russian Federation); Andreeva, M. V.; Elantsev, E. M. and Khomutov, A. V. The study of exogenic permafrost-related geological processes along the Yuzhno-Russkoe-Beregovoe Road: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 123-127, illus., 22 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12069593 Hinkel, Kenneth M., editor (University of Cincinnati, Cincinnati, OH). Proceedings of the Tenth international conference on Permafrost; international contributions: International Conference on Permafrost (ICOP) Proceedings, 10, Volume 1, 492 p., illus., 2012. ISBN: 978-5-905911-01-9. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation. Individual papers within scope are cited separately.

URL: http://www.ticop2012.org/upload/iblock/83b/83b336f940efdec30802d3610debb4f1.pdf

12075280 Iospa, A. V. (Fundamentproekt Open Joint-Stock Company, Moscow, Russian Federation); Popova, A. A.; Aksenov, V. I. and Klinova, G. I. Coding of ground type during geotechnical site investigations in permafrost regions: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 129-132, illus. incl. 3 tables, 6 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075281 Isakov, V. (Lomonosov Moscow State University, Department of Cryolithology and Glaciology, Moscow, Russian Federation). Main types and causes of deformations on railways and roads in the Norilsk industrial district: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 133-136, illus., 3 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075282 Ivanova-Efimova, E. N. (Moscow State University, Moscow, Russian Federation). Glacial topography of the northwestern part of the Putorana Plateau: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 137-140, illus. incl. 1 table, geol. sketch map, 6 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075283 Kapralova, V. N. (Russian Academy of Sciences, Sergeev Institute of Environmental Geoscience, Moscow, Russian Federation) and Viktorov, A. S. Implementation of mathematical landscape morphology methods for estimating risk of damage to linear engineering structures due to thermokarst processes: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 141-144, illus. incl. 2 tables, 9 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075284 Kaverin, D. (Institute of Biology, Syktyvkar, Russian Federation); Mazhitova, G.; Pastukhov, A. and Rivkin, F. The transition layer in permafrost-affected soils, northeast European Russia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 145-148, illus. incl. sketch map, 7 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075286 Khilimonyuk, V. Z. (Lomonosov Moscow State University, Department of Geocryology, Moscow, Russian Federation); Broushkov, A. V. and Grebenkin, S. I. Environmental and geological problems of subarctic territories and possible solutions: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 153-155, 14 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075285 Khilimonyuk, V. Z. (Lomonosov Moscow State University, Department of Geocryology, Moscow, Russian Federation); Ospennikov, E. N.; Buldovich, S. N. and Gorshkov, E. I. Ice volume estimates in the Bolshezemelskiy artesian basin permafrost: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 149-151, illus. incl. sketch map, 4 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075287 Khomutov, A. V. (Russian Academy of Science, Earth Cryosphere Institute, Tyumen, Russian Federation). Assessment of landslide geohazards in typical tundra of central Yamal: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 157-162, illus. incl. 2 tables, geol. sketch maps, 9 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075288 Kolunin, V. S. (Russian Academy of Sciences, Earth Cryosphere Institute, Tyumen, Russian Federation); Kolumin, A. V. and Pisarev, A. D. Heat and mass transfer in water-saturated ceramics with macro inclusions of ice: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 163-168, illus. incl. 2 tables, 6 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075289 Komarov, L. A. (Lomonosov Moscow State University, Moscow, Russian Federation) and Kiyashko, N. V. Method for estimating properties of cryopegs from the Yamal Peninsula: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 169-174, illus. incl. 4 tables, 15 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075290 Kondratyev, V. G. (Zabaikalye State University, TransIGEM, Chita, Russian Federation). Cryogenic risks and railroad resources in permafrost regions: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 175-179, illus., 15 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075291 Konishchev, V. N. (Lomonosov Moscow State University, Moscow, Russian Federation); Rogov, V. V.; Golubev, V. N. and Sokratov, S. A. Experimental study of isotope composition of bound water: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 181-183, illus., 4 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075292 Konstantinov, P. Ya. (Russian Academy of Sciences, Melnikov Permafrost Institute, Yakutsk, Russian Federation); Fedorov, A. N.; Ugarov, I. S.; Argunov, R. N. and Iijima, Y. The use of sites with a dense network of thaw tubes to monitor the thickness of the seasonally thawed layer in central Yakutia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 185-188, illus. incl. 3 tables, 13 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075293 Kornienko, S. G. (Russian Academy of Sciences, Institute of Oil and Gas Problems, Moscow, Russian Federation). Evaluation of the ground ice content based on data from the NOAA satellite; the case of the western coast of the Yamal Peninsula, Russia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 189-194, illus., 14 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075294 Kosykh, N. P. (Russian Academy of Science, Institute of Soil Science and Agrochemistry, Novosibirsk, Russian Federation). Phytomass reserves and characteristics within the active layer of the forest-tundra bog ecosystem: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 195-198, illus. incl. 2 tables, sketch map, 6 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075295 Kotov, P. I. (Lomonosov Moscow State University, Moscow, Russian Federation). Impact of thawing on ground deformation: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 199-204, illus. incl. 6 tables, 4 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075296 Kritsuk, L. N. (All-Russian Scientific and Research Institute of Hydrogeology and Engineering Geology, Moscow, Russian Federation). Ground ice in the cryolithozone, Yamal Peninsula: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 205-210, illus. incl. geol. sketch maps, 16 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075297 Krupoderov, V. S. (All-Russian Research Institute for Hydrogeology and Engineering Geology, Moscow, Russian Federation) and Dubrovin, V. A. Problematic aspects of the study and exploration of the Arctic cryolithozone: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 211-214, illus., 4 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075298 Kudryavtsev, S. A. (Far Eastern State Transport University, Khabarovsk, Russian Federation); Valtseva, T. Yu. and Michailin, R. G. Geotechnical solutions for slope stabilization along the Amur Highway characterized by permafrost degradation of road embankments: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 215-219, illus., 2 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075299 Kuzmin, G. P. (Russian Academy of Sciences, Melnikov Permafrost Institute, Yakutsk, Russian Federation) and Panin, V. N. Providing the optimal temperature for underground plant seed storage in permafrost: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 221-223, illus., 4 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075300 Kuznetsova, E. P. (Lomonosov Moscow State University, Moscow, Russian Federation) and Motenko, R. G. Impact of mineral composition on heat-conducting properties of frozen volcanic ashes from Kamchatka: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 225-230, illus. incl. 1 table, 26 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075301 Lebedeva, L. S. (Saint Petersburg State University, St. Petersburg, Russian Federation) and Semenova, O. Modeling of active layer and runoff; a case study from small watersheds Kolyma water balance station: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 231-236, illus. incl. 1 table, geol. sketch maps, 24 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075302 Leibman, M. O. (Russian Academy of Sciences, Earth Cryosphere Institute, Tyumen, Russian Federation); Khomutov, A. V.; Orekhov, P. T.; Khitun, O. V.; Epstein, H.; Frost, G. and Walker, D. A. Gradient of seasonal thaw depth along the Yamal transect: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 237-242, illus. incl. 5 tables, sketch map, 18 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075303 Luchsheva, L. N. (InfoGeoProekt, Moscow, Russian Federation); Obzhirov, A. I. and Astakhov, A. S. Deposits of gas hydrates as a potential source of mercury on the continental slope and shelf in northeast Sakhalin: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 243-246, illus., 10 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075304 Malkova, G. V. (Russian Academy of Sciences, Earth Cryosphere Institute, Tyumen, Russian Federation) and Pavlov, A. V. GIS-based assessment of contemporary climate and permafrost changes in northern Russia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 247-251, illus. incl. sketch maps, 22 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075305 Maslakov, A. (Lomonosov Moscow State University, Department of Geography, Moscow, Russian Federation); Grebenets, V. I.; Ablyazina, D.; Shmelev, D.; Radosteva, A.; Pastukhov, V.; Antonov, V.; Bykovskiy, A.; Gavrilov, G.; Gorbatyuk, A.; Mandzhiev, D.; Melnik, P.; Saveleva, A.; Smirnov, A.; Khmelnitskiy, G.; Shpuntova, A.; Kraev, G. and Streletskiy, D. A. The dynamics of seasonal soil freezing in central Russia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 253-257, illus. incl. 2 tables, sketch map, 4 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075306 Matyukhin, A. G. (Lomonosov Moscow State University, Moscow, Russian Federation) and Streletskaya, I. D. The salinity of cryogenic Quaternary deposits in the Yenisey North: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 259-262, illus. incl. 1 table, sketch maps, 17 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075307 Melnikov, V. P. (Russian Academy of Sciences, Earth Cryosphere Institute, Tyumen, Russian Federation); Nesterov, A. N.; Reshetnikov, A. M. and Istomin, Vladimir A. Stability and growth of gas hydrates at pressures below ice-hydrate-gas equilibrium: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 263-266, illus., 9 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12069594 Melnikov, Vladimir P. (Russian Academy of Sciences, Russian Federation); Drozdov, Dmitry S. and Romanovsky, Vladimir E., editors. Proceedings of the Tenth international conference on Permafrost; translations of Russian contributions: International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, 555 p., illus., 2012. ISBN: 978-5-905911-02-6. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation. Individual papers within scope are cited separately.

URL: http://www.ticop2012.org/upload/iblock/0a5/0a51f73455541ae71468cb14dfb0eb3c.pdf

12075308 Mesyats, S. P. (Russian Academy of Sciences, Mining Institute of the Kola Science Center, Apatity, Russian Federation) and Melnikov, N. N. A technological approach to minimize problems of thermal erosion during development of Yamal gas-condensate deposits: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 267-270, illus., 7 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075309 Miklyaeva, E. S. (Lomonosov Moscow State University, Department of Geography, Moscow, Russian Federation) and Soldatov, V. A. Impact of oil pollution on the depth and cryogenic structure of the seasonally frozen layer at Samotlor Field, West Siberia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 271-274, illus., 4 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075310 Minkin, M. A. (Fundamentproekt, Moscow, Russian Federation) and Potapova, O. A. Design of reliable bases and foundations in permafrost regions: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 275-279, illus. incl. 4 tables, 2 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075311 Moskalenko, N. G. (Russian Academy of Sciences, Earth Cryosphere Institute, Tyumen, Russian Federation). Impact of permafrost degradation on northern taiga ecosystems in western Siberia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 281-286, illus. incl. 1 table, sketch map, 13 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075312 Oberman, N. G. (MIREKO Mining Geological Company, Syktyvkar, Russian Federation). Long-term temperature regime of the northeast European permafrost region during contemporary climate warming: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 287-291, illus. incl. 3 tables, sketch map, 14 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075313 Oblogov, G. E. (Lomonosov Moscow State University, Moscow, Russian Federation); Streletskaya, I. D.; Vasiliev, A. A.; Gusev, E. A. and Arslanov, H. A. Quaternary deposits and geocryological conditions of Gydan Bay coast of the Kara Sea: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 293-296, illus. incl. sketch map, 8 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075314 Okunev, S. N. (Fundamentstroyarkos Scientific Production Association, Tyumen, Russian Federation); Dolgikh, G. M.; Strizhkov, S. N. and Skorbilin, N. A. Thermal monitoring of ground temperature stabilization systems: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 297-300, illus. incl. 1 table, sketch map, 7 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075315 Opokina, O. L. (Russian Academy of Sciences, Earth Cryosphere Institute, Tyumen, Russian Federation); Slagoda, E. A. and Bazhenov, A. I. Permafrost structures and deformations in Quaternary sediments of west Yamal Peninsula: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 303-307, illus. incl. sects., sketch map, 16 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075316 Osadchaya, G. G. (Institute of Management, Information, and Business, Department of Ecology and Natural Resources Management, Ukhta, Russian Federation) and Zengina, T. Yu. Territorial biospheric resources of the Bolshezemelskaya Tundra cryolithozone under intensive exploration of hydrocarbon deposits: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 309-312, illus. incl. 1 table, sketch map, 5 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075317 Osokin, N. I. (Russian Academy of Science, Institute of Geography, Moscow, Russian Federation) and Sosnovskiy, A. V. Thermophysical properties of moss cover and its influence on the thermal regime of the ground, Spitsbergen Archipelago: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 313-316, illus., 7 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075318 Ostroumov, V. E. (Russian Academy of Sciences, Institute of Physical-Chemical and Biological Problems of Soil Science, Pushchino, Russian Federation). Separation of mobile forms of chemical elements during the formation of segregated ice: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 317-321, illus., 1 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075319 Panchenko, E. (Lomonosov Moscow State University, Department for Cryolithology and Glaciology, Moscow, Russian Federation). Influence of "landscape position marginality degree" on the intensity of dangerous processes: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 323-327, illus. incl. sketch map, 10 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075320 Pendin, V. V. (Russian State Geological Prospecting University, Moscow, Russian Federation); Dubina, T. P.; Ovsyannikova, O. S. and Ganova, S. D. Preventive localization of adverse exogenous geological processes in the cryolithozone: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 329-331, illus. incl. 1 table, 5 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075321 Podborny, E. E. (Tyumen NIIGiprogaz OJSC, Tyumen, Russian Federation). Gas shows in the permafrost of the Bovanenkova gas-bearing structure: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 333-338, illus. incl. 4 tables, sketch map, 12 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075322 Podenko, L. S. (Russian Academy of Sciences, Institute of Earth Cryosphere, Tyumen, Russian Federation) and Molokitina, N. S. Effects of solid microparticles on grinding of ice: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 339-341, illus. incl. 2 tables, 6 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075323 Ponomareva, O. E. (Russian Academy of Sciences, Earth Cryosphere Institute, Tyumen, Russian Federation); Gravis, A. G.; Berdinikov, N. M. and Blyakharchuk, T. A. Climate change, frost action, and permafrost-related processes in the northern taiga region of West Siberia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 343-347, illus. incl. sketch map, 6 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075324 Poznanin, V. L. (Russian Acedemy of Sciences, Institute of Mineralogy, Geochemistry and Crystal Chemistry of Rare Elements, Moscow, Russian Federation). Ice energy as a model of activity of exogenic geological processes: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 349-352, illus. incl. 2 tables, 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075325 Rocheva, A. M. (Management, Information and Business Institute, Ecology and Environmental Management Department, Ukhta, Russian Federation). Evaluation of landscape conditions for environmental management in the discontinuous permafrost subzone (Bolshezemelskaya Tundra): in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 353-356, illus. incl. sketch map, 6 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075326 Rogov, V. V. (Lomonosov Moscow State University, Moscow, Russian Federation) and Kurchatova, A. N. Observations of microorganisms in segregated ice using methods of electron microscopy: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 357-359, illus., 6 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075327 Roman, L. T. (Lomonosov Moscow State University, Moscow, Russian Federation). Solution to a series of problems of frozen ground mechanics using time-analogy methods: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 361-366, illus. incl. 4 tables, 16 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075328 Sannikov, G. S. (Promneftegazekologiya Geoecological Company, Tyumen, Russian Federation). Changes in the areas of thermokarst lakes in the territory of the Bovanenkovo Field (Yamal) over the last 20 years: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 367-370, illus. incl. sketch maps, 12 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075329 Semenova, O. M. (State Hydrology Institute, Saint Petersburg, Russian Federation); Lebedeva, L. S. and Beldiman, I. N. Estimate of engineering characteristics of runoff under conditions of limtited data on hydrometeorological observations, northeastern Russia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 371-376, illus. incl. 2 tables, 12 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075330 Serebrennikov, A. A. (Tyumen State Oil and Gas University, Tyumen, Russian Federation); Lavrov, I. G. and Serebrennikov, D. A. Stressed-deformed state of trenchless polyethylene pipelines installed at negative temperatures: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 377-379, illus., 1 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075331 Sergeev, D. O. (Russian Academy of Sciences, Sergeev Institute of Environmental Geoscience, Moscow, Russian Federation); Khalilova, J. V.; Perlshtein, G. Z.; Khimenkov, A. N.; Makaricheva, E. M. and Ugarov, A. N. Identification, diagnostics, and ranking of geocryological hazards for long-distance pipelines and other linear structures: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 381-384, illus., 6 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075332 Shavlov, A. V. (Russian Academy of Sciences, Earth Cryosphere Institute, Tyumen); Dzhumandzhi, V. A. and Romanyuk, S. N. Water in the form of spatially ordered droplets near the vapor-water boundary: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 385-387, illus., 2 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075333 Sheynkman, V. S. (Russian Academy of Sciences, Earth Cryosphere Institute, Tyumen, Russian Federation). Glaciation of Siberia as viewed form the position of Earth cryology; glaciers as a component of the cryolithozone: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 389-394, illus., 16 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075334 Shmelev, D. G. (Lomonosov Moscow State University, Department of Cryolithology and Glaciology, Moscow, Russian Federation). Composition of water-soluble salts in late Cenzoic deposits, northeast Yakutia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 395-399, illus. incl. 1 table, 21 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075335 Shpolyanskaya, N. A. (Lomonosov Moscow State University, Moscow, Russian Federation). Features of Pleistocene-Holocene permafrost history of the western and eastern sectors of the Russian Arctic and subarctic: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 401-406, illus. incl. sketch map, 21 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075336 Skachkov, Yu. B. (Russian Academy of Sciences, Melnikov Geocryology Institute, Yakutsk, Russian Federation) and Neradovskiy, L. G. Forecast of air temperature change in Yakutia to the middle of the twenty-first century: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 407-410, illus. incl. 1 table, 4 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075337 Skryabin, P. N. (Russian Academy of Sciences, Melnikov Permafrost Institute, Yakutsk, Russian Federation) and Varlamov, S. P. The impact of development and fire on the thermal state of permafrost, central Yakutia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 411-414, illus. incl. sketch map, 15 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075338 Slagoda, E. A. (Russian Academy of Sciences, Earth Cryosphere Institute, Tyumen, Russian Federation); Opokina, O. L.; Kurchatova, A. N. and Rogov, V. V. Structure and composition of complex massive ice bodies in late Pleistocene-Holocene sediments of the Marre-Sale Cape, west Yamal: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 415-420, illus. incl. sect., 1 table, geol. sketch map, 12 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075339 Smulskiy, I. I. (Russian Academy of Sciences, Earth Cryosphere Institute, Tyumen, Russian Federation). Some astronomical problems of the cryosphere evolution: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 421-426, illus., 9 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075340 Solomatin, V. I. (Lomonosov Moscow State University, Department of Geography, Moscow, Russian Federation) and Belova, N. G. Proof of the glacier origin of tabular massive ice: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 427-431, illus., 20 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075341 Streletskaya, I. D. (Lomonosov Moscow State University, Moscow, Russian Federation) and Vasilev, A. A. The ice complex of western Taymyr: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 433-438, illus. incl. 1 table, sketch map, 34 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075342 Tarasenko, T. V. (Lomonosov Moscow State University, Moscow, Russian Federation) and Kravtsova, V. I. Changes in surface area of thermokarst lakes on the basis of satellite images: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 439-444, illus. incl. sketch map, 12 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075343 Ter-Martirosyan, Z. G. (Moscow State Construction University, Moscow, Russian Federation) and Gorbachev, P. A. Calculation of frost heave tangential stress with regard to the deformability of a pile shaft: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 445-448, illus. incl. 1 table, 2 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075362 Titkov, S. N. (Geological Research Institute for Construction, Moscow, Russian Federation). Permafrost conditions associated with the railroad bridge crossing of the Shchuchuya River, southern Yamal Peninsula: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 449-451, illus., 2 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075345 Tumel, N. V. (Lomonosov Moscow State University, Department of Cryolithology and Glaciology, Moscow, Russian Federation) and Osadchaya, G. G. The possibilities of industrial development of natural resources on permafrost-affected bog landscapes and peatlands of the Bolshezemelskaya Tundra: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 459-461, 6 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075344 Tumel, N. V. (Lomonosov Moscow State University, Department of Cryolithologya nd Glaciology, Moscow, Russian Federation). Permafrost and landscapes of the Russian European North in the twenty-first century: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 453-458, illus. incl. 1 table, 12 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075346 Ukraintseva, N. G. (Russian Academy of Sciences, Earth Cryosphere Institute, Tyumen, Russian Federation); Drozdov, Dmitry S.; Korostelev, Y. V. and Korobova, T. A. Terrain indicator approach and results for permafrost studies: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 463-468, illus. incl. sketch map, 27 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075347 Urban, A. A. (Russian Academy of Sciences, Melnikov Permafrost Institute, Yakutsk, Russian Federation). The role of cryogenic head in the formation of repetitive wedge ice and long-term frost heave: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 469-473, illus. incl. 1 table, sketch map, 20 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075348 Ustinova, E. V. (Russian Academy of Sciences, Earth Cryosphere Institute, Tyumen, Russian Federation). Large-scale mapping of cryogenic landscapes in the West Siberian northern taiga: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 475-479, illus. incl. sketch maps, 7 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075349 Varlamov, S. P. (Russian Academy of Sciences, Melnikov Permafrost Institute, Yakutsk, Russian Federation); Skachkov, Yu. B.; Skryabin, P. N. and Shender, N. I. Thermal state of the upper horizons of the permafrost in central Yakutia: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 481-486, illus. incl. 3 tables, sketch map, 21 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075350 Vasil'chuk, A. C. (Lomonosov Moscow State University, Moscow, Russian Federation) and Vasil'chuk, Yu. K. Pollen and spores as indicators of the origin of massive ice: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 487-491, illus. incl. 1 table, 18 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075351 Vasilchuk, Yu. K. (Lomonosov Moscow State University, Department of Geography and Geology, Moscow, Russian Federation). Classification of tabular massive ice bodies: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 493-497, illus., 22 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075352 Vasiliev, A. A. (Russian Academy of Sciences, Earth Cryosphere Institute, Tyumen, Russian Federation) and Rekant, P. V. Onshore and offshore permafrost in the Kara Sea: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 499-501, illus. incl. sketch map, 4 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075353 Vasiliev, I. S. (Russian Academy of Sciences, Melnikov Permafrost Institute, Yakutsk, Russian Federation). Interannual dynamics of seasonal thaw depths of the Kenkeme-Lena landscapes: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 503-507, illus. incl. 1 table, 19 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075354 Velikotskiy, M. A. (Lomonosov Moscow State University, Moscow, Russian Federation) and Marakhtanov, V. P. Assessment of the corrosiveness of permafrost landscapes: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 509-512, illus. incl. 3 tables, 12 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075355 Verkhoturov, A. G. (Zabaikalsky State University, Chita, Russian Federation). Geocryological programs for specialist training at Zabaikalsky State University: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 513-515, illus., 2 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075356 Viktorov, A. S. (Russian Academy of Sciences, Sergeyev Geoecology Institute, Moscow, Russian Federation); Kapralova, V. N. and Orlov, T. V. Models of mathematical landscape morphology in cryolithozone research: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 517-522, illus. incl. 1 table, 7 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075357 Vlasov, V. P. (Melnikov Permafrost Institute, Northeastern Research Permafrost Station, Magadan, Russian Federation). Composite cast-in-drilled hole piles in frozen soils, Magadan: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 523-526, 24 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075358 Yermak, A. A. (Russian Academy of Sciences, Earth Cryosphere Institute, Tyumen, Russian Federation); Slagoda, E. A. and Idrisov, I. R. Interpretation of natural permafrost-related geomorphic processes and landforms in the Bovanenkovo hydrocarbon field on the west coast of the Yamal Peninsula: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 527-530, illus. incl. sketch map, 13 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075359 Yermokhina, K. A. (Russian Academy of Sciences, Earth Cryosphere Institute, Moscow, Russian Federation) and Myalo, E. G. Phytoindicators of landslide disturbances in the central Yamal: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 531-536, illus. incl. 3 tables, 12 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075360 Zabolotnik, S. I. (Russian Academy of Sciences, Melnikov Permafrost Institute, Yakutsk, Russian Federation) and Zabolotnik, P. S. Changes in the state of frozen ground in the course of long-term operation of the Yakutsk combined heat and power (YCHP) plant: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 537-542, illus., 7 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12075361 Zotova, L. I. (Lomonosov Moscow State University, Moscow, Russian Federation) and Dedyusova, S. Yu. Evaluation of critical ecological situations in the Tyumen northern cryolithozone under economic development: in Proceedings of the Tenth international conference on Permafrost; translation of Russian contributions (Melnikov, Vladimir P., editor; et al.), International Conference on Permafrost (ICOP) Proceedings, 10, Volume 2, p. 543-548, illus. incl. 2 tables, 6 ref., 2012. Meeting: Tenth international conference on Permafrost, June 25-29, 2012, Salekhard, Russian Federation.

12074301 Brazell, Seth (University of North Carolina at Charlotte, Department of Geography and Earth Sciences, Charlotte, NC); Layzell, Anthony; McGee, Ralph; Eppes, Martha C.; Armour, J. and Diemer, John. Timing of post-LGM deglaciation of the central Conejos River valley, southern San Juan Mountains, Colorado [abstr.]: in Geological Society of America, Southeastern Section, 60th annual meeting, Abstracts with Programs - Geological Society of America, 43(2), p. 76, March 2011. Meeting: Geological Society of America, Southeastern Section, 60th annual meeting, March 23-25, 2011, Wilmington, NC.

An ice cap covered much of the San Juan Mountains of Colorado during the Last Glacial Maximum. Few studies have examined the timing of post-LGM deglaciation in the southern San Juan Mountains. This study attempts to add constraints to the history of deglaciation by examining a sediment core taken from Trail Creek campground bog in the central part of the Conejos River Valley. That core extends 170 cm below the surface of the bog and has about 40% recovery. It comprises sandy and gravelly mud at the base grading up through silty mud to gytta and peat, recording the formation and filling of a kettle pond. The kettle pond formed on the uppermost (glacial) terrace in this portion of the Conejos River Valley. Charcoal, pollen and insect fragments from the sandy mud in the lowest section of the core (CRV-TCCB-1A-3B-1 31-33 cm) have been collected and submitted for AMS ¹⁴C dating. Potentially, the ¹⁴C results will confirm the post-LGM landscape evolution model proposed by Layzell (2010) which is based on ¹⁴C-calibrated soil chronosequences from alluvial fans, strath and fill terraces, and colluvial deposits in the central Conejos River Valley.

12068896 Fish, James (Alaska Department of Environmental Conservation, Fairbanks, AK). Use of pore water as part of contaminated sites management; case studies in Kotzebue and Fairbanks, Alaska: in Proceedings of the Fourth interagency conference on Research in the watersheds; observing, studying, and managing for change (Medley, Nicolas C., editor; et al.), Scientific Investigations Report, Rep. No. SIR 2011-5169, p. 2-8, illus. incl. 1 table, 19 ref., 2011. Meeting: Proceedings of the Fourth interagency conference on Research in the watersheds, Sept. 26-30, 2011, Fairbanks, AK. Accessed on June 20, 2012.

URL: http://pubs.usgs.gov/sir/2011/5169/

12074457 Kwasniak-Kominek, M. (AGH University of Science and Technology, Cracow, Poland); Manecki, M.; Rzepa, G. and Czerny, J. Weathering and pore water evolution in the foreland of retreating glacier, SW Spitsbergen [abstr.]: in Goldschmidt 2011 abstract volume, Mineralogical Magazine, 75(3), p. 1259, 2 ref., 2011. WWW. Meeting: Goldschmidt2011, Aug. 8-14, 2011, Prague, Czech Republic.

Chemical weathering and soil forming processes which are associated with retreating glaciers contribute to high chemical denudation observed in polar regions. Retreating glaciers uncover fresh regolith, initial evolution of which may be dominated by few simple processes. The area of this study is the foreland of Werenskiold Glacier near SW coast of Spitsbergen. This glacier has been continuously retreating during the last century by several meters a year [1]. The objective of this study is correlation between the chemistry of pore waters and the mechanisms of alternation or dissolution of minerals present in regolith with respect to the distance from the glacier front (age of exposure). This is a part of large research effort on weathering, soil formation and initial microbiological activity on a foreland of Arctic glacier initiated with the International Polar Year in 2007. Werenskiold Glacier basin is eroded in metamorphic rocks which belong to Precambrian Hecla Hoek Succession. These are mostly carbonates, quartzites, phyllites, schists, greenshists and amphibolites [2]. In accordance with other studies, the carbonate dissolution dominates in the youngest glacial sediments while silicate weathering is relatively significant in the oldest sediments. The composition of water can be explained mostly by dissolution/crystallization accompanied with redox reactions. Alterations of minerals identified with optical microscopy, XRD and SEM-EDS include dissolution of carbonates and oxidation of pyrite accompanied with formation of clays. Systematic changes between water samples correlate with distance from the glacier front (with the age of soils): e.g. the pH decreases from 8, 6 to 7, 7 while TDS increases from 133 to 748 mg/L. Inverse modeling with PHREEQC was used to propose the mechanisms of mineral transformation. The waters evolve from carbonate-dominated to sulfate-dominated. This might indicate that with time, pore waters reach the equilibrium with carbonate minerals while being continuously supplied with SO^42- from sulfides oxidation. The research is supported by MNiSW grant N N307 473638.

URL: http://minmag.geoscienceworld.org/content/75/3/1133.full.pdf+html

12068928 Mackey, L. M. (Yukon River Inter-Tribal Watershed Council, Fairbanks, AK); Thomas, C.; Toohey, R.; Schuster, P. F. and Herman-Mercer, N. The Yukon River Basin Indigenous Observation Network; preliminary results from baseline datasets highlighting climate variation indicators [abstr.]: in Proceedings of the Fourth interagency conference on Research in the watersheds; observing, studying, and managing for change (Medley, Nicolas C., editor; et al.), Scientific Investigations Report, Rep. No. SIR 2011-5169, p. 185, 2011. Meeting: Proceedings of the Fourth interagency conference on Research in the watersheds, Sept. 26-30, 2011, Fairbanks, AK. Accessed on June 20, 2012.

URL: http://pubs.usgs.gov/sir/2011/5169/

12068898 Whitman, M. S. (Bureau of Land Management, Fairbanks, AK); Arp, C. D.; Jones, B.; Morris, W.; Grosse, G.; Urban, F. and Kemnitz, R. Developing a long-term aquatic monitoring network in a complex watershed of the Alaskan Arctic Coastal Plain: in Proceedings of the Fourth interagency conference on Research in the watersheds; observing, studying, and managing for change (Medley, Nicolas C., editor; et al.), Scientific Investigations Report, Rep. No. SIR 2011-5169, p. 15-20, illus. incl. 3 tables, sketch map, 20 ref., 2011. Meeting: Proceedings of the Fourth interagency conference on Research in the watersheds, Sept. 26-30, 2011, Fairbanks, AK. Accessed on June 20, 2012.

URL: http://pubs.usgs.gov/sir/2011/5169/

12071353 Yao Tandong (Chinese Academy of Sciences, Institute of Tibetan Plateau Research, China); Thompson, Lonnie G.; Mosbrugger, Volker; Liu Xiaohan; Ma Yaoming; Zhang Fan; Yang Xiaoxin and Joswiak, Daniel R. Third Pole Environment (TPE) Program; a new base for the study of "water-ice-air-ecosystem-human" interactions on the Tibetan Plateau and surrounding areas [abstr.]: in 26th Himalaya-Karakoram-Tibet workshop; abstract volume & program (Guilmette, Carl, editor; et al.), Journal of Himalayan Earth Sciences, 44(1), p. 88, 2011. Meeting: 26th Himalaya-Karakoram-Tibet workshop, July 12-13, 2011, Canmore, AB, Canada.

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12067345 Schmidt, Jeanine M. (U. S. Geological Survey) and Granitto, Matthew. The Alaska Geochemical Database; V. 1.0, Geologic materials: Fact Sheet - U. S. Geological Survey, Rep. No. FS 2011-3130, 2 p., sketch map, October 2011. Accessed on July 10, 2012.

What is the AGDB? The Alaska Geochemical Database (AGDB) is a new, comprehensive compilation of geologic, spatial, descriptive, mineralogical, and analytical geochemical data for samples collected in Alaska and surrounding waters by the U.S. Geological Survey (USGS) from 1962 to 2009. Data for geologic materials (rocks, minerals and mineral separates, soils, lake sediments, bulk stream sediments, and a variety of heavy-mineral concentrates) will be released as a two-sided DVD (USGS Digital Data Series DS 637 v. 1.0) in October of 2011. Future data releases will include water, organic and leachate samples. The AGDB contains all Alaskan data from USGS legacy databases (for example, the RASS and PLUTO systems), and all results produced by USGS in-house and contract chemistry laboratories through December 2009. The database includes geochemical data resulting from the reanalysis of archived materials, such as those from the Alaska Mineral Resource Assessment (AMRAP) and National Uranium Resource Evaluation (NURE) programs, for additional elements and by newer methods. Reanalyses include samples collected statewide as part of the National Geochemical Survey, and samples from a project across the Alaska Range (data released in 2010). The AGDB also contains data for geologic materials from Alaska submitted by USGS researchers to non-USGS and non-contract labs, and a variety of other Alaskan geologic materials samples. Quality Control: Data in the AGDB have undergone extensive quality control screening including searching field notes and maps for accurate location information, verifying media and sample type, linking analytical data to geologic parameters recorded by the submitter, and documenting sample preparation and analytical methods. Data Files. The AGDB v. 1.0 two-sided DVD includes: a 4.3 GB Microsoft Access 2007 relational database (as two linked .mdb files); the same database in Microsoft Access 2003; Microsoft Excel spreadsheet tables (.xls files) and ASCII text files that display the results of common queries to the database (for example, Ag-Cr values for concentrate samples; rock samples by quadrangle); references for analytical methods; references to published data; and metadata in three file formats. Data Availability: The Alaska Geochemical Database will be available in a searchable, spatially referenced, online format at URL: http://mrdata.usgs.gov/; estimated availability early 2012. A 2012 update (AGDB v. 2.0) will include water, organic, leachate, and miscellaneous sample media. For More Information: On sample media or analytical methods: URL: http://minerals.cr.usgs.gov/projects/analytical_chem/references.html Text prepared by Jeanine M. Schmidt and Matt Granitto. Figure prepared by Nora Shew; Layout by Jeanine Schmidt. Artwork on page 1 by Daniel Granitto (used by permission). The USGS Mineral Resources Program is the sole Federal provider of research and information on nonfuel mineral resources.

URL: http://pubs.usgs.gov/fs/2011/3130/

12074936 Manies, K. L. (U. S. Geological Survey); Harden, J. W. and Ottmar, R. Soils data related to the 1999 FROSTFIRE burn: Open-File Report - U. S. Geological Survey, Rep. No. OF 2011-1216, 8 p., illus. incl. 3 tables, sketch map, 18 ref., 2011. Accessed on Aug. 7, 2012.

This report describes the sample collection and processing for U.S. Geological Survey efforts at FROSTFIRE, an experimental burn that occurred in Alaska in 1999. Data regarding carbon, water, and energy dynamics pre-fire, during, and post-fire were obtained in this landscape-scale prescribed burn. U.S. Geological Survey investigators measured changes in the stocks of carbon (C), nitrogen (N), mercury (Hg), and other components in pre- and post-burn soils of this watershed.

URL: http://pubs.usgs.gov/of/2011/1216/

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