Articles | Volume 17, issue 6
https://doi.org/10.5194/tc-17-2305-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-17-2305-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
08 Jun 2023
Research article |
| 08 Jun 2023
| 08 Jun 2023
Modelling rock glacier ice content based on InSAR-derived velocity, Khumbu and Lhotse valleys, Nepal
Earth System Science Programme, Faculty of Science, The Chinese
University of Hong Kong, Hong Kong SAR, China
Centre for Geography and Environmental Science, University of Exeter,
Penryn, Cornwall, TR10 9FE, UK
Institute of Environment, Energy and Sustainability, The Chinese
University of Hong Kong, The Chinese University of Hong Kong, Hong Kong SAR,
China
Stephan Harrison
Centre for Geography and Environmental Science, University of Exeter,
Penryn, Cornwall, TR10 9FE, UK
Earth System Science Programme, Faculty of Science, The Chinese
University of Hong Kong, Hong Kong SAR, China
Institute of Environment, Energy and Sustainability, The Chinese
University of Hong Kong, The Chinese University of Hong Kong, Hong Kong SAR,
China
Joanne Laura Wood
Centre for Geography and Environmental Science, University of Exeter,
Penryn, Cornwall, TR10 9FE, UK
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Related subject area
Discipline: Frozen ground | Subject: Frozen Ground
Thermal state of permafrost in the Central Andes (27–34° S)
High-resolution 4D electrical resistivity tomography and below-ground point sensor monitoring of High Arctic deglaciated sediments capture zero-curtain effects, freeze–thaw transitions, and mid-winter thawing
Spectral induced polarization survey for the estimation of hydrogeological parameters in an active rock glacier
Quantifying permafrost ground ice contents in the Tien Shan and Pamir (Central Asia): A Petrophysical Joint Inversion approach using the Geometric Mean model
Effect of surficial geology mapping scale on modelled ground ice in Canadian Shield terrain
Model-based analysis of solute transport and potential carbon mineralization in a permafrost catchment under seasonal variability and climate change
Ground ice estimation in permafrost samples using industrial Computed Tomography
InSAR-measured permafrost degradation of palsa peatlands in northern Sweden
The evolution of Arctic permafrost over the last 3 centuries from ensemble simulations with the CryoGridLite permafrost model
Permafrost saline water and Early to mid-Holocene permafrost aggradation in Svalbard
Environmental spaces for palsas and peat plateaus are disappearing at a circumpolar scale
Post-Little Ice Age rock wall permafrost evolution in Norway
The temperature-dependent shear strength of ice-filled joints in rock mass considering the effect of joint roughness, opening and shear rates
Significant underestimation of peatland permafrost along the Labrador Sea coastline in northern Canada
Estimation of stream water components and residence time in a permafrost catchment in the central Tibetan Plateau using long-term water stable isotopic data
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Mihai O. Cimpoiasu, Oliver Kuras, Harry Harrison, Paul B. Wilkinson, Philip Meldrum, Jonathan E. Chambers, Dane Liljestrand, Carlos Oroza, Steven K. Schmidt, Pacifica Sommers, Lara Vimercati, Trevor P. Irons, Zhou Lyu, Adam Solon, and James A. Bradley
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Young Arctic sediments, uncovered by retreating glaciers, are in continuous development, shaped by how water infiltrates and is stored in the near subsurface. Harsh weather conditions at high latitudes make direct observation of these environments very difficult. To address this, we deployed two automated sensor installations in August 2021 on a glacier forefield in Svalbard. These sensors recorded continuously for 1 year, revealing unprecedented images of the ground’s freeze–thaw transition.
Clemens Moser, Umberto Morra di Cella, Christian Hauck, and Adrián Flores Orozco
The Cryosphere, 19, 143–171, https://doi.org/10.5194/tc-19-143-2025, https://doi.org/10.5194/tc-19-143-2025, 2025
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We use electrical conductivity and induced polarization in an imaging framework to quantify hydrogeological parameters in the active Gran Sometta rock glacier. The results show high spatial variability in the hydrogeological parameters across the rock glacier and are validated by saltwater tracer tests coupled with 3D electrical conductivity imaging. Hydrogeological information was linked to kinematic data to further investigate its role in rock glacier movement.
Tamara Mathys, Muslim Azimshoev, Zhoodarbeshim Bektursunov, Christian Hauck, Christin Hilbich, Murataly Duishonakunov, Abdulhamid Kayumov, Nikolay Kassatkin, Vassily Kapitsa, Leo C. P. Martin, Coline Mollaret, Hofiz Navruzshoev, Eric Pohl, Tomas Saks, Intizor Silmonov, Timur Musaev, Ryskul Usubaliev, and Martin Hoelzle
EGUsphere, https://doi.org/10.5194/egusphere-2024-2795, https://doi.org/10.5194/egusphere-2024-2795, 2024
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This study provides a comprehensive geophysical dataset on permafrost in the data-scarce Tien Shan and Pamir mountain regions of Central Asia. It also introduces a novel modeling method to quantify ground ice content across different landforms. The findings indicate that this approach is well-suited for characterizing ice-rich permafrost, which is crucial for evaluating future water availability and assessing risks associated with thawing permafrost.
H. Brendan O'Neill, Stephen A. Wolfe, Caroline Duchesne, and Ryan J. H. Parker
The Cryosphere, 18, 2979–2990, https://doi.org/10.5194/tc-18-2979-2024, https://doi.org/10.5194/tc-18-2979-2024, 2024
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Maps that show ground ice in permafrost at circumpolar or hemispherical scales offer only general depictions of broad patterns in ice content. In this paper, we show that using more detailed surficial geology in a ground ice computer model significantly improves the depiction of ground ice and makes the mapping useful for assessments of the effects of permafrost thaw and for reconnaissance planning of infrastructure routing.
Alexandra Hamm, Erik Schytt Mannerfelt, Aaron A. Mohammed, Scott L. Painter, Ethan T. Coon, and Andrew Frampton
EGUsphere, https://doi.org/10.5194/egusphere-2024-1606, https://doi.org/10.5194/egusphere-2024-1606, 2024
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The fate of thawing permafrost carbon is essential to our understanding of the permafrost-climate feedback and projections of future climate. Here, we modeled the transport of carbon in the groundwater within the active layer. We find that carbon transport velocities and potential microbial mineralization rates are strongly dependent on liquid saturation in the seasonally thawed active layer. In a warming climate, the rate at which permafrost thaws determines how fast carbon can be transported.
Mahya Roustaei, Joel Pumple, Jordan Harvey, and Duane Froese
EGUsphere, https://doi.org/10.5194/egusphere-2024-1353, https://doi.org/10.5194/egusphere-2024-1353, 2024
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This study investigated the application of CT scanning to tackle the limitations of traditional destructive methods in characterization of permafrost cores. Five different permafrost cores were scanned at resolutions of 65 and 25 μm with new calibration method. The identification of different materials from CT images showed air(gas), ice(excess and pore), and sediments using an Otsu segmentation method. The results were validated by a destructive method(cuboid) and also a non-destructive method.
Samuel Valman, Matthias B. Siewert, Doreen Boyd, Martha Ledger, David Gee, Betsabé de la Barreda-Bautista, Andrew Sowter, and Sofie Sjögersten
The Cryosphere, 18, 1773–1790, https://doi.org/10.5194/tc-18-1773-2024, https://doi.org/10.5194/tc-18-1773-2024, 2024
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Climate warming is thawing permafrost that makes up palsa (frost mound) peatlands, risking ecosystem collapse and carbon release as methane. We measure this regional degradation using radar satellite technology to examine ground elevation changes and show how terrain roughness measurements can be used to estimate local permafrost damage. We find that over half of Sweden's largest palsa peatlands are degrading, with the worse impacts to the north linked to increased winter precipitation.
Moritz Langer, Jan Nitzbon, Brian Groenke, Lisa-Marie Assmann, Thomas Schneider von Deimling, Simone Maria Stuenzi, and Sebastian Westermann
The Cryosphere, 18, 363–385, https://doi.org/10.5194/tc-18-363-2024, https://doi.org/10.5194/tc-18-363-2024, 2024
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Using a model that can simulate the evolution of Arctic permafrost over centuries to millennia, we find that post-industrialization permafrost warming has three "hotspots" in NE Canada, N Alaska, and W Siberia. The extent of near-surface permafrost has decreased substantially since 1850, with the largest area losses occurring in the last 50 years. The simulations also show that volcanic eruptions have in some cases counteracted the loss of near-surface permafrost for a few decades.
Dotan Rotem, Vladimir Lyakhovsky, Hanne Hvidtfeldt Christiansen, Yehudit Harlavan, and Yishai Weinstein
The Cryosphere, 17, 3363–3381, https://doi.org/10.5194/tc-17-3363-2023, https://doi.org/10.5194/tc-17-3363-2023, 2023
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Frozen saline pore water, left over from post-glacial marine ingression, was found in shallow permafrost in a Svalbard fjord valley. This suggests that freezing occurred immediately after marine regression due to isostatic rebound. We conducted top-down freezing simulations, which confirmed that with Early to mid-Holocene temperatures (e.g. −4 °C), freezing could progress down to 20–40 m within 200 years. This, in turn, could inhibit flow through the sediment, therefore preserving saline fluids.
Oona Leppiniemi, Olli Karjalainen, Juha Aalto, Miska Luoto, and Jan Hjort
The Cryosphere, 17, 3157–3176, https://doi.org/10.5194/tc-17-3157-2023, https://doi.org/10.5194/tc-17-3157-2023, 2023
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For the first time, suitable environments for palsas and peat plateaus were modeled for the whole Northern Hemisphere. The hotspots of occurrences were in northern Europe, western Siberia, and subarctic Canada. Climate change was predicted to cause almost complete loss of the studied landforms by the late century. Our predictions filled knowledge gaps in the distribution of the landforms, and they can be utilized in estimation of the pace and impacts of the climate change over northern regions.
Justyna Czekirda, Bernd Etzelmüller, Sebastian Westermann, Ketil Isaksen, and Florence Magnin
The Cryosphere, 17, 2725–2754, https://doi.org/10.5194/tc-17-2725-2023, https://doi.org/10.5194/tc-17-2725-2023, 2023
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We assess spatio-temporal permafrost variations in selected rock walls in Norway over the last 120 years. Ground temperature is modelled using the two-dimensional ground heat flux model CryoGrid 2D along nine profiles. Permafrost probably occurs at most sites. All simulations show increasing ground temperature from the 1980s. Our simulations show that rock wall permafrost with a temperature of −1 °C at 20 m depth could thaw at this depth within 50 years.
Shibing Huang, Haowei Cai, Zekun Xin, and Gang Liu
The Cryosphere, 17, 1205–1223, https://doi.org/10.5194/tc-17-1205-2023, https://doi.org/10.5194/tc-17-1205-2023, 2023
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In this study, the warming degradation mechanism of ice-filled joints is revealed, and the effect of temperature, normal stress, shear rate and joint opening on the shear strength of rough ice-filled joints is investigated. The shear rupture modes include shear cracking of joint ice and debonding of the ice–rock interface, which is related to the above factors. The bonding strength of the ice–rock interface is larger than the shear strength of joint ice when the temperature is below −1 ℃.
Yifeng Wang, Robert G. Way, Jordan Beer, Anika Forget, Rosamond Tutton, and Meredith C. Purcell
The Cryosphere, 17, 63–78, https://doi.org/10.5194/tc-17-63-2023, https://doi.org/10.5194/tc-17-63-2023, 2023
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Peatland permafrost in northeastern Canada has been misrepresented by models, leading to significant underestimates of peatland permafrost and permafrost distribution along the Labrador Sea coastline. Our multi-stage, multi-mapper, consensus-based inventorying process, supported by field- and imagery-based validation efforts, identifies peatland permafrost complexes all along the coast. The highest density of complexes is found to the south of the current sporadic discontinuous permafrost limit.
Shaoyong Wang, Xiaobo He, Shichang Kang, Hui Fu, and Xiaofeng Hong
The Cryosphere, 16, 5023–5040, https://doi.org/10.5194/tc-16-5023-2022, https://doi.org/10.5194/tc-16-5023-2022, 2022
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This study used the sine-wave exponential model and long-term water stable isotopic data to estimate water mean residence time (MRT) and its influencing factors in a high-altitude permafrost catchment (5300 m a.s.l.) in the central Tibetan Plateau (TP). MRT for stream and supra-permafrost water was estimated at 100 and 255 d, respectively. Climate and vegetation factors affected the MRT of stream and supra-permafrost water mainly by changing the thickness of the permafrost active layer.
Bin Cao, Gabriele Arduini, and Ervin Zsoter
The Cryosphere, 16, 2701–2708, https://doi.org/10.5194/tc-16-2701-2022, https://doi.org/10.5194/tc-16-2701-2022, 2022
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We implemented a new multi-layer snow scheme in the land surface scheme of ERA5-Land with revised snow densification parameterizations. The revised HTESSEL improved the representation of soil temperature in permafrost regions compared to ERA5-Land; in particular, warm bias in winter was significantly reduced, and the resulting modeled near-surface permafrost extent was improved.
Tamara Mathys, Christin Hilbich, Lukas U. Arenson, Pablo A. Wainstein, and Christian Hauck
The Cryosphere, 16, 2595–2615, https://doi.org/10.5194/tc-16-2595-2022, https://doi.org/10.5194/tc-16-2595-2022, 2022
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With ongoing climate change, there is a pressing need to understand how much water is stored as ground ice in permafrost. Still, field-based data on permafrost in the Andes are scarce, resulting in large uncertainties regarding ground ice volumes and their hydrological role. We introduce an upscaling methodology of geophysical-based ground ice quantifications at the catchment scale. Our results indicate that substantial ground ice volumes may also be present in areas without rock glaciers.
Rowan Romeyn, Alfred Hanssen, and Andreas Köhler
The Cryosphere, 16, 2025–2050, https://doi.org/10.5194/tc-16-2025-2022, https://doi.org/10.5194/tc-16-2025-2022, 2022
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We have investigated a long-term record of ground vibrations, recorded by a seismic array installed in Adventdalen, Svalbard. This record contains a large number of
frost quakes, a type of ground shaking that can be produced by cracks that form as the ground cools rapidly. We use underground temperatures measured in a nearby borehole to model forces of thermal expansion and contraction that can cause these cracks. We also use the seismic measurements to estimate where these cracks occurred.
Hongwei Liu, Pooneh Maghoul, and Ahmed Shalaby
The Cryosphere, 16, 1157–1180, https://doi.org/10.5194/tc-16-1157-2022, https://doi.org/10.5194/tc-16-1157-2022, 2022
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The knowledge of physical and mechanical properties of permafrost and its location is critical for the management of permafrost-related geohazards. Here, we developed a hybrid inverse and multiphase poromechanical approach to quantitatively estimate the physical and mechanical properties of a permafrost site. Our study demonstrates the potential of surface wave techniques coupled with our proposed data-processing algorithm to characterize a permafrost site more accurately.
Jiahua Zhang, Lin Liu, Lei Su, and Tao Che
The Cryosphere, 15, 3021–3033, https://doi.org/10.5194/tc-15-3021-2021, https://doi.org/10.5194/tc-15-3021-2021, 2021
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We improve the commonly used GPS-IR algorithm for estimating surface soil moisture in permafrost areas, which does not consider the bias introduced by seasonal surface vertical movement. We propose a three-in-one framework to integrate the GPS-IR observations of surface elevation changes, soil moisture, and snow depth at one site and illustrate it by using a GPS site in the Qinghai–Tibet Plateau. This study is the first to use GPS-IR to measure environmental variables in the Tibetan Plateau.
Juditha Undine Schmidt, Bernd Etzelmüller, Thomas Vikhamar Schuler, Florence Magnin, Julia Boike, Moritz Langer, and Sebastian Westermann
The Cryosphere, 15, 2491–2509, https://doi.org/10.5194/tc-15-2491-2021, https://doi.org/10.5194/tc-15-2491-2021, 2021
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This study presents rock surface temperatures (RSTs) of steep high-Arctic rock walls on Svalbard from 2016 to 2020. The field data show that coastal cliffs are characterized by warmer RSTs than inland locations during winter seasons. By running model simulations, we analyze factors leading to that effect, calculate the surface energy balance and simulate different future scenarios. Both field data and model results can contribute to a further understanding of RST in high-Arctic rock walls.
Thomas Schneider von Deimling, Hanna Lee, Thomas Ingeman-Nielsen, Sebastian Westermann, Vladimir Romanovsky, Scott Lamoureux, Donald A. Walker, Sarah Chadburn, Erin Trochim, Lei Cai, Jan Nitzbon, Stephan Jacobi, and Moritz Langer
The Cryosphere, 15, 2451–2471, https://doi.org/10.5194/tc-15-2451-2021, https://doi.org/10.5194/tc-15-2451-2021, 2021
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Climate warming puts infrastructure built on permafrost at risk of failure. There is a growing need for appropriate model-based risk assessments. Here we present a modelling study and show an exemplary case of how a gravel road in a cold permafrost environment in Alaska might suffer from degrading permafrost under a scenario of intense climate warming. We use this case study to discuss the broader-scale applicability of our model for simulating future Arctic infrastructure failure.
Rowan Romeyn, Alfred Hanssen, Bent Ole Ruud, Helene Meling Stemland, and Tor Arne Johansen
The Cryosphere, 15, 283–302, https://doi.org/10.5194/tc-15-283-2021, https://doi.org/10.5194/tc-15-283-2021, 2021
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A series of unusual ground motion signatures were identified in geophone recordings at a frost polygon site in Adventdalen on Svalbard. By analysing where the ground motion originated in time and space, we are able to classify them as cryoseisms, also known as frost quakes, a ground-cracking phenomenon that occurs as a result of freezing processes. The waves travelling through the ground produced by these frost quakes also allow us to measure the structure of the permafrost in the near surface.
Lei Cai, Hanna Lee, Kjetil Schanke Aas, and Sebastian Westermann
The Cryosphere, 14, 4611–4626, https://doi.org/10.5194/tc-14-4611-2020, https://doi.org/10.5194/tc-14-4611-2020, 2020
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A sub-grid representation of excess ground ice in the Community Land Model (CLM) is developed as novel progress in modeling permafrost thaw and its impacts under the warming climate. The modeled permafrost degradation with sub-grid excess ice follows the pathway that continuous permafrost transforms into discontinuous permafrost before it disappears, including surface subsidence and talik formation, which are highly permafrost-relevant landscape changes excluded from most land models.
Rupesh Subedi, Steven V. Kokelj, and Stephan Gruber
The Cryosphere, 14, 4341–4364, https://doi.org/10.5194/tc-14-4341-2020, https://doi.org/10.5194/tc-14-4341-2020, 2020
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Permafrost beneath tundra near Lac de Gras (Northwest Territories, Canada) contains more ice and less organic carbon than shown in global compilations. Excess-ice content of 20–60 %, likely remnant Laurentide basal ice, is found in upland till. This study is based on 24 boreholes up to 10 m deep. Findings highlight geology and glacial legacy as determinants of a mosaic of permafrost characteristics with potential for thaw subsidence up to several metres in some locations.
Bin Cao, Stephan Gruber, Donghai Zheng, and Xin Li
The Cryosphere, 14, 2581–2595, https://doi.org/10.5194/tc-14-2581-2020, https://doi.org/10.5194/tc-14-2581-2020, 2020
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This study reports that ERA5-Land (ERA5L) soil temperature bias in permafrost regions correlates with the bias in air temperature and with maximum snow height. While global reanalyses are important drivers for permafrost study, ERA5L soil data are not well suited for directly informing permafrost research decision making due to their warm bias in winter. To address this, future soil temperature products in reanalyses will require permafrost-specific alterations to their land surface models.
Ji-Woong Yang, Jinho Ahn, Go Iwahana, Sangyoung Han, Kyungmin Kim, and Alexander Fedorov
The Cryosphere, 14, 1311–1324, https://doi.org/10.5194/tc-14-1311-2020, https://doi.org/10.5194/tc-14-1311-2020, 2020
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Thawing permafrost may lead to decomposition of soil carbon and nitrogen and emission of greenhouse gases. Thus, methane and nitrous oxide compositions in ground ice may provide information on their production mechanisms in permafrost. We test conventional wet and dry extraction methods. We find that both methods extract gas from the easily extractable parts of the ice and yield similar results for mixing ratios. However, both techniques are unable to fully extract gas from the ice.
Nikita Demidov, Sebastian Wetterich, Sergey Verkulich, Aleksey Ekaykin, Hanno Meyer, Mikhail Anisimov, Lutz Schirrmeister, Vasily Demidov, and Andrew J. Hodson
The Cryosphere, 13, 3155–3169, https://doi.org/10.5194/tc-13-3155-2019, https://doi.org/10.5194/tc-13-3155-2019, 2019
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As Norwegian geologist Liestøl (1996) recognised,
in connection with formation of pingos there are a great many unsolved questions. Drillings and temperature measurements through the pingo mound and also through the surrounding permafrost are needed before the problems can be better understood. To shed light on pingo formation here we present the results of first drilling of pingo on Spitsbergen together with results of detailed hydrochemical and stable-isotope studies of massive-ice samples.
Coline Mollaret, Christin Hilbich, Cécile Pellet, Adrian Flores-Orozco, Reynald Delaloye, and Christian Hauck
The Cryosphere, 13, 2557–2578, https://doi.org/10.5194/tc-13-2557-2019, https://doi.org/10.5194/tc-13-2557-2019, 2019
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We present a long-term multisite electrical resistivity tomography monitoring network (more than 1000 datasets recorded from six mountain permafrost sites). Despite harsh and remote measurement conditions, the datasets are of good quality and show consistent spatio-temporal variations yielding significant added value to point-scale borehole information. Observed long-term trends are similar for all permafrost sites, showing ongoing permafrost thaw and ground ice loss due to climatic conditions.
Jing Tao, Randal D. Koster, Rolf H. Reichle, Barton A. Forman, Yuan Xue, Richard H. Chen, and Mahta Moghaddam
The Cryosphere, 13, 2087–2110, https://doi.org/10.5194/tc-13-2087-2019, https://doi.org/10.5194/tc-13-2087-2019, 2019
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The active layer thickness (ALT) in middle-to-high northern latitudes from 1980 to 2017 was produced at 81 km2 resolution by a global land surface model (NASA's CLSM) with forcing fields from a reanalysis data set, MERRA-2. The simulated permafrost distribution and ALTs agree reasonably well with an observation-based map and in situ measurements, respectively. The accumulated above-freezing air temperature and maximum snow water equivalent explain most of the year-to-year variability of ALT.
Robert Kenner, Jeannette Noetzli, Martin Hoelzle, Hugo Raetzo, and Marcia Phillips
The Cryosphere, 13, 1925–1941, https://doi.org/10.5194/tc-13-1925-2019, https://doi.org/10.5194/tc-13-1925-2019, 2019
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A new permafrost mapping method distinguishes between ice-poor and ice-rich permafrost. The approach was tested for the entire Swiss Alps and highlights the dominating influence of the factors elevation and solar radiation on the distribution of ice-poor permafrost. Our method enabled the indication of mean annual ground temperatures and the cartographic representation of permafrost-free belts, which are bounded above by ice-poor permafrost and below by permafrost-containing excess ice.
H. Brendan O'Neill, Stephen A. Wolfe, and Caroline Duchesne
The Cryosphere, 13, 753–773, https://doi.org/10.5194/tc-13-753-2019, https://doi.org/10.5194/tc-13-753-2019, 2019
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In this paper, we present new models to depict ground ice in permafrost in Canada, incorporating knowledge from recent studies. The model outputs we present reproduce observed regional ground ice conditions and are generally comparable with previous mapping. However, our results are more detailed and more accurately reflect ground ice conditions in many regions. The new mapping is an important step toward understanding terrain response to permafrost degradation in Canada.
Stephanie Coulombe, Daniel Fortier, Denis Lacelle, Mikhail Kanevskiy, and Yuri Shur
The Cryosphere, 13, 97–111, https://doi.org/10.5194/tc-13-97-2019, https://doi.org/10.5194/tc-13-97-2019, 2019
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This study provides a detailed description of relict glacier ice preserved in the permafrost of Bylot Island (Nunavut). We demonstrate that the 18O composition (-34.0 0.4 ‰) of the ice is consistent with the late Pleistocene age ice in the Barnes Ice Cap. As most of the glaciated Arctic landscapes are still strongly determined by their glacial legacy, the melting of these large ice bodies could have significant impacts on permafrost geosystem landscape dynamics and ecosystems.
Robert G. Way, Antoni G. Lewkowicz, and Yu Zhang
The Cryosphere, 12, 2667–2688, https://doi.org/10.5194/tc-12-2667-2018, https://doi.org/10.5194/tc-12-2667-2018, 2018
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Isolated patches of permafrost in southeast Labrador are among the southernmost lowland permafrost features in Canada. Local characteristics at six sites were investigated from Cartwright, NL (~ 54° N) to Blanc-Sablon, QC (~ 51° N). Annual ground temperatures varied from −0.7 °C to −2.3 °C with permafrost thicknesses of 1.7–12 m. Ground temperatures modelled for two sites showed permafrost disappearing at the southern site by 2060 and persistence beyond 2100 at the northern site only for RCP2.6.
Zeze Ran and Gengnian Liu
The Cryosphere, 12, 2327–2340, https://doi.org/10.5194/tc-12-2327-2018, https://doi.org/10.5194/tc-12-2327-2018, 2018
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This article provides the first rock glacier inventory of Daxue Shan, south- eastern Tibetan Plateau. This study provides important data for exploring the relation between maritime periglacial environments and the development of rock glaciers on the south-eastern Tibetan Plateau (TP). It may also highlight the characteristics typical of rock glaciers found in a maritime setting.
Charles J. Abolt, Michael H. Young, Adam L. Atchley, and Dylan R. Harp
The Cryosphere, 12, 1957–1968, https://doi.org/10.5194/tc-12-1957-2018, https://doi.org/10.5194/tc-12-1957-2018, 2018
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We investigate the relationship between ice wedge polygon topography and near-surface ground temperature using a combination of field work and numerical modeling. We analyze a year-long record of ground temperature across a low-centered polygon, then demonstrate that lower rims and deeper troughs promote warmer conditions in the ice wedge in winter. This finding implies that ice wedge cracking and growth, which are driven by cold conditions, can be impeded by rim erosion or trough subsidence.
Cited articles
Arenson, L. U. and Jakob, M.: The significance of rock glaciers in the dry
Andes – A discussion of Azócar and Brenning (2010) and Brenning and
Azócar (2010), Permafrost Periglac., 21, 282–285,
https://doi.org/10.1002/ppp.693, 2010.
Arenson, L. and Springman, S.: Mathematical descriptions for the behaviour
of ice-rich frozen soils at temperatures close to 0 C, Can. Geotech. J., 42,
431–442, https://doi.org/10.1139/t04-109, 2005a.
Arenson, L. and Springman, S.: Triaxial constant stress and constant strain
rate tests on ice-rich permafrost samples, Can. Geotech. J., 42, 412–430,
https://doi.org/10.1139/t04-111, 2005b.
Arenson, L., Hoelzle, M., and Springman, S.: Borehole deformation
measurements and internal structure of some rock glaciers in Switzerland,
Permafrost Periglac., 13, 117–135, https://doi.org/10.1002/ppp.414, 2002.
Azizi, F. and Whalley, W. B.: Numerical modelling of the creep behaviour of
ice-debris mixtures under variable thermal regimes, in: International
Offshore and Polar Engineering Conference Proceedings, The Sixth
International Offshore and Polar Engineering Conference, Los Angeles, 362–366,
ISBN 1880653222, 1996.
Azócar, G. F. and Brenning, A.: Hydrological and geomorphological
significance of rock glaciers in the dry Andes, Chile (27∘–33∘ S), Permafrost Periglac., 21, 42-53,
https://doi.org/10.1002/ppp.669, 2010.
Ballantyne, C. K.: Periglacial geomorphology, John Wiley & Sons, Hoboken,
NJ, USA, ISBN 9781405100069, 2018.
Bechor, N. B. D. and Zebker, H. A.: Measuring two-dimensional movements
using a single InSAR pair, Geophys. Res. Lett., 33, L16311,
https://doi.org/10.1029/2006gl026883, 2006.
Berthling, I.: Beyond confusion: Rock glaciers as cryo-conditioned
landforms, Geomorphology, 131, 98–106,
https://doi.org/10.1016/j.geomorph.2011.05.002, 2011.
Berthling, I., Etzelmüller, B., Isaksen, K., and Sollid, J. L.: Rock
glaciers on Prins Karls Forland. II: GPR soundings and the development of
internal structures, Permafrost Periglac., 11, 357–369,
https://doi.org/10.1002/1099-1530(200012)11:4<357::aid-ppp366>3.0.co;2-6, 2000.
Bertone, A., Barboux, C., Bodin, X., Bolch, T., Brardinoni, F., Caduff, R., Christiansen, H. H., Darrow, M. M., Delaloye, R., Etzelmüller, B., Humlum, O., Lambiel, C., Lilleøren, K. S., Mair, V., Pellegrinon, G., Rouyet, L., Ruiz, L., and Strozzi, T.: Incorporating InSAR kinematics into rock glacier inventories: insights from 11 regions worldwide, The Cryosphere, 16, 2769–2792, https://doi.org/10.5194/tc-16-2769-2022, 2022.
Bodin, X., Rojas, F., and Brenning, A.: Status and evolution of the
cryosphere in the Andes of Santiago (Chile, 33.5∘ S.),
Geomorphology, 118, 453–464, https://doi.org/10.1016/j.geomorph.2010.02.016,
2010.
Brardinoni, F., Scotti, R., Sailer, R., and Mair, V.: Evaluating sources of
uncertainty and variability in rock glacier inventories, Earth Surf.
Processes, 44, 2450–2466, https://doi.org/10.1002/esp.4674, 2019.
Brenning, A.: Geomorphological, hydrological and climatic significance of
rock glaciers in the Andes of Central Chile (33–35∘ S), Permafrost
Periglac., 16, 231–240, https://doi.org/10.1002/ppp.528, 2005a.
Brenning, A.: Climatic and geomorphological controls of rock glaciers in the
Andes of Central Chile, Humboldt-Universität zu Berlin,
Mathematisch-Naturwissenschaftliche Fakultät II, https://doi.org/10.18452/15332, 2005b.
Brenning, A.: The significance of rock glaciers in the dry Andes – reply to
L. Arenson and M. Jakob, Permafrost Periglac., 21, 286–288,
2010.
Buchli, T., Kos, A., Limpach, P., Merz, K., Zhou, X. H., and Springman, S.
M.: Kinematic investigations on the Furggwanghorn Rock Glacier, Switzerland,
Permafrost Periglac., 29, 3–20, https://doi.org/10.1002/ppp.1968, 2018.
Carslaw, H. S. and Jaeger, J. C.: Conduction of heat in solids, Oxford
Science Publications, Clarendon Press, Oxford, ISBN 9780198533689, 1959.
Chen, C. W. and Zebker, H. A.: Phase unwrapping for large SAR
interferograms: statistical segmentation and generalized network models,
IEEE T. Geosci Remote, 40, 1709–1719,
https://doi.org/10.1109/TGRS.2002.802453, 2002.
Cicoira, A., Beutel, J., Faillettaz, J., Gärtner-Roer, I., and Vieli, A.: Resolving the influence of temperature forcing through heat conduction on rock glacier dynamics: a numerical modelling approach, The Cryosphere, 13, 927–942, https://doi.org/10.5194/tc-13-927-2019, 2019a.
Cicoira, A., Beutel, J., Faillettaz, J., and Vieli, A.: Water controls the
seasonal rhythm of rock glacier flow, Earth Planet Sc. Lett., 528, 115844,
https://doi.org/10.1016/j.epsl.2019.115844, 2019b.
Cicoira, A., Marcer, M., Gärtner-Roer, I., Bodin, X., Arenson, L. U.,
and Vieli, A.: A general theory of rock glacier creep based on in-situ and
remote sensing observations, Permafrost Periglac., 32, 139–153,
https://doi.org/10.1002/ppp.2090, 2020.
Corte, A.: The Hydrological Significance of Rock Glaciers, J. Glaciol., 17,
157–158, https://doi.org/10.3189/s0022143000030859, 1976.
Croce, F. A. and Milana, J. P.: Internal structure and behaviour of a rock
glacier in the Arid Andes of Argentina, Permafrost Periglac., 13, 289–299,
https://doi.org/10.1002/ppp.431, 2002.
Cuffey, K. and Paterson, W. S. B.: The physics of glaciers, 4th edn.,
Butterworth-Heinemann/Elsevier, Burlington, MA, ISBN 978-0123694614, 2010.
Delaloye, R., Morard, S., Barboux, C., Abbet, D., Gruber, V., Riedo, M., and
Gachet, S.: Rapidly moving rock glaciers in Mattertal, Geogr. Helv., 29, 21–31,
2013.
Duguay, M. A., Edmunds, A., Arenson, L. U., and Walnstein, P. A.: Quantifying the significance of the hydrological contribution of a rock glacier – A review, in: Proceedings of the 68th Canadian Geotechnical Conference and 7th Canadian Permafrost Conference (GeoQuébec 2015), 2015.
Fujii, Y. and Higuchi, K.: Ground Temperature and its Relation to
Permafrost Occurrences in the Khumbu Region and Hidden Valley, Journal of
Japanese Society of Snow and Ice, 38, 125–128,
https://doi.org/10.5331/seppyo.38.Special_125, 1976.
Fukui, K., Fujii, Y., Ageta, Y., and Asahi, K.: Changes in the lower limit
of mountain permafrost between 1973 and 2004 in the Khumbu Himal, the Nepal
Himalayas, Global Planet. Change, 55, 251–256.
https://doi.org/10.1016/j.gloplacha.2006.06.002, 2007.
Geiger, S. T., Daniels, J. M., Miller, S. N., and Nicholas, J. W.: Influence
of Rock Glaciers on Stream Hydrology in the La Sal Mountains, Utah, Arct.
Antarct. Alp. Res., 46, 645–658,
https://doi.org/10.1657/1938-4246-46.3.645, 2014.
Glen, J. W.: The creep of polycrystalline ice, P. Roy. Soc. Lond. A Mat.,
228, 519–538, https://doi.org/10.1098/rspa.1955.0066, 1955.
Guglielmin, M., Camusso, M., Polesello, S., and Valsecchi, S.: An old relict
glacier body preserved in permafrost environment: The Foscagno rock glacier
ice core (Upper Valtellina, Italian central Alps), Arct.
Antarct. Alp. Res., 36, 108–116, https://doi.org/10.1657/1523-0430(2004)036[0108:AORGBP]2.0.CO;2, 2004.
Haeberli, W.: Modern research perspectives relating to permafrost creep and
rock glaciers: A discussion, Permafrost Periglac., 11, 290–293,
https://doi.org/10.1002/1099-1530(200012)11:4<290::AID-PPP372>3.0.CO;2-0, 2000.
Haeberli, W., Hoelzle, M., Kääb, A., Keller, F., Vonder Mühll, D., and Wagner, S.: Ten years after drilling through the permafrost of the active rock glacier Murtèl, eastern Swiss Alps: answered questions and new perspectives, in: Collection Nordicana, 7th International Conference on Permafrost, edited by: Lewkowicz, A. G. and Allard, M., 23–27 June 1998, Université Laval, Yellowknife, Canada, 403–410, 1998.
Hanssen, R. F.: Radar interferometry : data interpretation and error analysis, Dordrecht Boston: Kluwer Academic, ISBN 0792369459, 2001.
Harrington, J. S., Mozil, A., Hayashi, M., and Bentley, L. R.: Groundwater
flow and storage processes in an inactive rock glacier, Hydrol. Process., 32,
3070–3088, https://doi.org/10.1002/hyp.13248, 2018.
Hauck, C.: New concepts in geophysical surveying and data interpretation for
permafrost terrain, Permafrost Periglac., 24, 131–137,
https://doi.org/10.1002/ppp.1774, 2013.
Hausmann, H., Krainer, K., Bruckl, E., and Mostler, W.: Internal structure
and ice content of reichenkar rock glacier (Stubai alps, Austria) assessed
by geophysical investigations, Permafrost Periglac., 18, 351–367,
https://doi.org/10.1002/ppp.601, 2007.
Hoelzle, M., Wagner, S., Kääb, A., and Vonder Mühll, D.: Surface
movement and internal deformation of ice-rock mixtures within rock glaciers
in the Upper Engadin, Switzerland, Proceedings of the 7th International
Conference on Permafrost, 465–471, ISBN 2920197576, 1998.
Hu, Y., Liu, L., Wang, X., Zhao, L., Wu, T., Cai, J., Zhu, X., and Hao, J.:
Quantification of permafrost creep provides kinematic evidence for
classifying a puzzling periglacial landform, Earth Surf. Proc. Land., 46,
465–477, https://doi.org/10.1002/esp.5039, 2021.
isce-framework: InSAR Scientific Computing Environment version 2 (ISCE2), version 2.4.2, GitHub [code] https://github.com/isce-framework/isce2/releases/tag/v2.4.2, last access: 17 November 2020.
Jakob, M.: Active rock glaciers and the lower limit of discontinuous alpine
permafrost, Khumbu-Himalaya, Nepal, Permafrost Periglac., 3, 253–256, 1992.
Janke, J. R., Ng, S., and Bellisario, A.: An inventory and estimate of water
stored in firn fields, glaciers, debris-covered glaciers, and rock glaciers
in the Aconcagua River Basin, Chile, Geomorphology, 296, 142–152,
https://doi.org/10.1016/j.geomorph.2017.09.002, 2017.
Jones, D. B., Harrison, S., Anderson, K., and Betts, R. A.: Mountain rock
glaciers contain globally significant water stores, Sci. Rep., 8, 2834,
https://doi.org/10.1038/s41598-018-21244-w, 2018a.
Jones, D. B., Harrison, S., Anderson, K., Selley, H. L., Wood, J. L., and
Betts, R. A.: The distribution and hydrological significance of rock
glaciers in the Nepalese Himalaya, Global Planet. Change, 160, 123–142,
https://doi.org/10.1016/j.gloplacha.2017.11.005, 2018b.
Jones, D. B., Harrison, S., and Anderson, K.: Mountain glacier-to-rock
glacier transition, Global Planet. Change, 181, 102999,
https://doi.org/10.1016/j.gloplacha.2019.102999, 2019a.
Jones, D. B., Harrison, S., Anderson, K., and Whalley, W. B.: Rock glaciers
and mountain hydrology: A review, Earth-Sci. Rev., 193, 66–90,
https://doi.org/10.1016/j.earscirev.2019.04.001, 2019b.
Jones, D. B., Harrison, S., Anderson, K., Shannon, S., and Betts, R. A.:
Rock glaciers represent hidden water stores in the Himalaya, Sci. Total
Environ., 793, 145368, https://doi.org/10.1016/j.scitotenv.2021.145368, 2021.
Kääb, A., Frauenfelder, R., and Roer, I.: On the response of
rockglacier creep to surface temperature increase, Global Planet. Change,
56, 172–187, https://doi.org/10.1016/j.gloplacha.2006.07.005, 2007.
Kenner, R., Pruessner, L., Beutel, J., Limpach, P., and Phillips, M.: How
rock glacier hydrology, deformation velocities and ground temperatures
interact: Examples from the Swiss Alps, Permafrost Periglac., 31, 3–14,
https://doi.org/10.1002/ppp.2023, 2019.
Kneisel, C., Hauck, C., Fortier, R., and Moorman, B.: Advances in
geophysical methods for permafrost investigations, Permafrost Periglac., 19,
157–178, https://doi.org/10.1002/ppp.616, 2008.
Knight, J., Harrison, S., and Jones, D. B.: Rock glaciers and the
geomorphological evolution of deglacierizing mountains, Geomorphology, 324,
14–24, https://doi.org/10.1016/j.geomorph.2018.09.020, 2019.
Krainer, K. and Mostler, W.: Hydrology of Active Rock Glaciers: Examples
from the Austrian Alps, Arct. Antarct. Alp. Res., 34, 142–149,
https://doi.org/10.1080/15230430.2002.12003478, 2002.
Krainer, K., Bressan, D., Dietre, B., Haas, J. N., Hajdas, I., Lang, K.,
Mair, V., Nickus, U., Reidl, D., Thies, H., and Tonidandel, D.: A
10 300-year-old permafrost core from the active rock glacier Lazaun,
southern Ötztal Alps (South Tyrol, northern Italy), Quaternary Res., 83,
324–335, https://doi.org/10.1016/j.yqres.2014.12.005, 2015.
Ladanyi, B.: Rheology of ice/rock systems and interfaces, in: Proceedings of the 8th International Conference on Permafrost, The 8th International Conference on Permafrost, Zurich, Switzerland, 621–626, ISBN 9058095827, 2003.
Leopold, M., Williams, M. W., Caine, N., Völkel, J., and Dethier, D.:
Internal structure of the Green Lake 5 rock glacier, Colorado Front Range,
USA, Permafrost Periglac., 22, 107–119, https://doi.org/10.1002/ppp.706,
2011.
Liu, L., Millar, C. I., Westfall, R. D., and Zebker, H. A.: Surface motion of active rock glaciers in the Sierra Nevada, California, USA: inventory and a case study using InSAR, The Cryosphere, 7, 1109–1119, https://doi.org/10.5194/tc-7-1109-2013, 2013.
Massonnet, D. and Feigl, K. L.: Radar interferometry and its application to
changes in the Earth's surface, Rev. Geophys., 36, 441–500,
https://doi.org/10.1029/97rg03139, 1998.
Mellor, M. and Testa, R.: Effect of temperature on the creep of ice, J.
Glaciol., 8, 131–145, 1969.
Monnier, S. and Kinnard, C.: Internal structure and composition of a rock
glacier in the Andes (upper Choapa valley, Chile) using borehole information
and ground-penetrating radar, Ann. Glaciol., 54, 61–72,
https://doi.org/10.3189/2013AoG64A107, 2013.
Monnier, S. and Kinnard, C.: Internal structure and composition of a rock
glacier in the Dry Andes, Inferred from ground-penetrating radar data and
its artefacts, Permafrost Periglac., 26, 335–346,
https://doi.org/10.1002/ppp.1846, 2015.
Monnier, S. and Kinnard, C.: Interrogating the time and processes of
development of the Las Liebres rock glacier, central Chilean Andes, using a
numerical flow model, Earth Surf. Proc. Land., 41, 1884–1893,
https://doi.org/10.1002/esp.3956, 2016.
Moore, P. L.: Deformation of debris-ice mixtures, Rev. Geophys., 52,
435–467, https://doi.org/10.1002/2014rg000453, 2014.
Munroe, J. S.: Distribution, evidence for internal ice, and possible
hydrologic significance of rock glaciers in the Uinta Mountains, Utah, USA,
Quaternary Res., 90, 50–65, https://doi.org/10.1017/qua.2018.24, 2018.
Nan, Z., Li, S., and Liu, Y.: Mean annual ground temperature distribution on
the Tibetan plateau: Permafrost distribution mapping and further
application, J. Glaciol. Geocryol., 24, 142–148, 2002.
Obu, J., Westermann, S., Barboux, C., Bartsch, A., Delaloye, R., Grosse, G.,
Heim, B., Hugelius, G., Irrgang, A., Kääb, A. M., Kroisleitner, C.,
Matthes, H., Nitze, I., Pellet, C., Seifert, F. M., Strozzi, T.,
Wegmüller, U., Wieczorek, M., and Wiesmann, A.: ESA Permafrost Climate
Change Initiative (Permafrost_cci): Permafrost version 2 data
products, Centre for Environmental Data Analysis, ESA CCI [data set], http://catalogue.ceda.ac.uk/uuid/1f88068e86304b0fbd34456115b6606f (last access: 30 June 2020),
2020.
Oerlemans, J.: Glaciers and climate change, A. A. Balkema Publishers, Lisse, ISBN 9789026518133,
2001.
PERMOS: Permafrost in Switzerland 2014/2015 to 2017/2018, edited by:
Noetzli, J., Luethi, R., and Staub, B., the Cryospheric Commission of the
Swiss Academy of Sciences, Glaciological Report (Permafrost) 12–15, 104
pp., 2019.
Perucca, L. and Esper Angillieri, M. Y.: Glaciers and rock glaciers'
distribution at 28∘ SL, Dry Andes of Argentina, and some
considerations about their hydrological significance, Environ. Earth
Sci., 64, 2079–2089, https://doi.org/10.1007/s12665-011-1030-z, 2011.
Pruessner, L., Huss, M., Phillips, M., and Farinotti, D.: A framework for
modeling rock glaciers and permafrost at the basin-scale in high alpine
catchments, J. Adv. Model. Earth Sy., 13,
e2020MS002361, https://doi.org/10.1029/2020ms002361, 2021.
Rangecroft, S., Harrison, S., Anderson, K., Magrath, J., Castel, A. P., and
Pacheco, P.: A first rock glacier inventory for the Bolivian Andes,
Permafrost Periglac., 25, 333–343, https://doi.org/10.1002/ppp.1816, 2014.
Rangecroft, S., Harrison, S., and Anderson, K.: Rock Glaciers as Water
Stores in the Bolivian Andes: An Assessment of Their Hydrological
Importance, Arct. Antarct. Alp. Res., 47, 89–98,
https://doi.org/10.1657/AAAR0014-029, 2015.
Reinosch, E., Gerke, M., Riedel, B., Schwalb, A., Ye, Q., and Buckel, J.:
Rock glacier inventory of the western Nyainqêntanglha Range, Tibetan
Plateau, supported by InSAR time series and automated classification,
Permafrost Periglac., 32, 657–672, https://doi.org/10.1002/ppp.2117, 2021.
Rouyet, L., Lauknes, T. R., Christiansen, H. H., Strand, S. M., and Larsen,
Y.: Seasonal dynamics of a permafrost landscape, Adventdalen, Svalbard,
investigated by InSAR, Remote Sens. Environ., 231, 111236,
https://doi.org/10.1016/j.rse.2019.111236, 2019.
Salerno, F., Guyennon, N., Thakuri, S., Viviano, G., Romano, E., Vuillermoz, E., Cristofanelli, P., Stocchi, P., Agrillo, G., Ma, Y., and Tartari, G.: Weak precipitation, warm winters and springs impact glaciers of south slopes of Mt. Everest (central Himalaya) in the last 2 decades (1994–2013), The Cryosphere, 9, 1229–1247, https://doi.org/10.5194/tc-9-1229-2015, 2015.
Schmid, M.-O., Baral, P., Gruber, S., Shahi, S., Shrestha, T., Stumm, D., and Wester, P.: Assessment of permafrost distribution maps in the Hindu Kush Himalayan region using rock glaciers mapped in Google Earth, The Cryosphere, 9, 2089–2099, https://doi.org/10.5194/tc-9-2089-2015, 2015.
Scott, W. J., Sellmann, P. V., and Hunter, J. A.: Geophysics in the study of
permafrost, in: Geotechnical and Environmental Geophysics: Volume I, Review
and Tutorial, 355–384, https://doi.org/10.1190/1.9781560802785.ch13, 1990.
Scotti, R., Crosta, G. B., and Villa, A.: Destabilisation of Creeping
Permafrost: The Plator Rock Glacier Case Study (Central Italian Alps),
Permafrost Periglac., 28, 224–236, https://doi.org/10.1002/ppp.1917, 2017.
Steig, E. J., Fitzpatrick, J. J., Potter, j. N., and Clark, D. H.: The
geochemical record in rock glaciers, Geogr. Ann. A., 80, 277–286,
https://doi.org/10.1111/j.0435-3676.1998.00043.x, 1998.
Strozzi, T., Kääb, A., and Frauenfelder, R.: Detecting and
quantifying mountain permafrost creep from in situ inventory, space-borne
radar interferometry and airborne digital photogrammetry, Int. J. Remote Sens.,
25, 2919–2931, https://doi.org/10.1080/0143116042000192330, 2004.
Swiss Permafrost Monitoring Network (PERMOS): Swiss Permafrost Monitoring Network Database, Fribourg and Davos, Switzerland, PERMOS Database [data set], https://doi.org/10.13093/permos-2021-01, 2021.
Wagner, T., Kainz, S., Helfricht, K., Fischer, A., Avian, M., Krainer, K.,
and Winkler, G.: Assessment of liquid and solid water storage in rock
glaciers versus glacier ice in the Austrian Alps, Sci. Total
Environ., 800, 149593, https://doi.org/10.1016/j.scitotenv.2021.149593,
2021.
Wang, X., Liu, L., Zhao, L., Wu, T., Li, Z., and Liu, G.: Mapping and inventorying active rock glaciers in the northern Tien Shan of China using satellite SAR interferometry, The Cryosphere, 11, 997–1014, https://doi.org/10.5194/tc-11-997-2017, 2017.
Way, R. G., Wang, Y., Bevington, A. R., Bonnaventure, P. P., Burton, J. R.,
Davis, E., Garibaldi, M. C., Lapalme, C. M., Tutton, R., Wehbe, M. A. E.:
Consensus-Based Rock Glacier Inventorying in the Torngat Mountains, Northern
Labrador, American Society of Civil Engineers Proceedings, Regional
Conference on Permafrost and the 19th International Conference on Cold
Regions Engineering, 24–29 October 2021, https://doi.org/10.31223/X5C60W, 2021.
Whalley, W. B. and Azizi, F.: Rheological models of active rock glaciers –
evaluation, critique and a possible test, Permafrost Periglac., 5, 37–51,
https://doi.org/10.1002/ppp.3430050105, 1994.
Winkler, G., Wagner, T., Pauritsch, M., Birk, S., Kellerer-Pirklbauer, A.,
Benischke, R., Leis, A., Morawetz, R., Schreilechner, M. G., and Hergarten,
S.: Identification and assessment of groundwater flow and storage components
of the relict Schöneben Rock Glacier, Niedere Tauern Range, Eastern Alps
(Austria), Hydrogeol. J., 24, 937–953,
https://doi.org/10.1007/s10040-015-1348-9, 2016.
Wirz, V., Gruber, S., Purves, R. S., Beutel, J., Gärtner-Roer, I., Gubler, S., and Vieli, A.: Short-term velocity variations at three rock glaciers and their relationship with meteorological conditions, Earth Surf. Dynam., 4, 103–123, https://doi.org/10.5194/esurf-4-103-2016, 2016.
Zhang, X., Feng, M., Zhang, H., Wang, C., Tang, Y., Xu, J., Yan, D., and
Wang, C.: Detecting rock glacier displacement in the Central Himalayas using
multi-temporal InSAR, Remote Sens., 13, 4738,
https://doi.org/10.3390/rs13234738, 2021.
Zhao, L., and Sheng, Y.: Permafrost survey manual, Science Press, Beijing, ISBN 9787030456113,
2015.
Short summary
Rock glaciers are considered to be important freshwater reservoirs in the future climate. However, the amount of ice stored in rock glaciers is poorly quantified. Here we developed an empirical model to estimate ice content in rock the glaciers in the Khumbu and Lhotse valleys, Nepal. The modelling results confirmed the hydrological importance of rock glaciers in the study area. The developed approach shows promise in being applied to permafrost regions to assess water storage of rock glaciers.
Rock glaciers are considered to be important freshwater reservoirs in the future climate....
