Articles | Volume 18, issue 7
https://doi.org/10.5194/tc-18-3141-2024
© Author(s) 2024. 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-18-3141-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
05 Jul 2024
Research article |
| 05 Jul 2024
| 05 Jul 2024
Short-term cooling, drying, and deceleration of an ice-rich rock glacier
Permafrost, Alpine Environment and Natural Hazards, WSL Institute for Snow and Avalanche Research SLF, 7260 Davos Dorf, Switzerland
Climate Change, Extremes and Natural Hazards in Alpine Regions Research Centre CERC, 7260 Davos Dorf, Switzerland
Robert Kenner
Permafrost, Alpine Environment and Natural Hazards, WSL Institute for Snow and Avalanche Research SLF, 7260 Davos Dorf, Switzerland
Climate Change, Extremes and Natural Hazards in Alpine Regions Research Centre CERC, 7260 Davos Dorf, Switzerland
Marcia Phillips
Permafrost, Alpine Environment and Natural Hazards, WSL Institute for Snow and Avalanche Research SLF, 7260 Davos Dorf, Switzerland
Climate Change, Extremes and Natural Hazards in Alpine Regions Research Centre CERC, 7260 Davos Dorf, Switzerland
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Jacopo Boaga, MIrko Pavoni, Alexander Bast, and Samuel Weber
EGUsphere, https://doi.org/10.5194/egusphere-2023-2774, https://doi.org/10.5194/egusphere-2023-2774, 2023
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Reversal polarity are observed in rock glacier seismic refraction tomography. We collected several datasets observing this phenomena in Switzerland and Italy. This phase change may be due to the presence of a thin low-velocity. Our results are confirmed by modelling and analysis of synthetic seismograms to demonstrate that the presence of a low-velocity layer produces a polarity reversal on the seismic gather.
Marcia Phillips, Chasper Buchli, Samuel Weber, Jacopo Boaga, Mirko Pavoni, and Alexander Bast
The Cryosphere, 17, 753–760, https://doi.org/10.5194/tc-17-753-2023, https://doi.org/10.5194/tc-17-753-2023, 2023
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A new combination of temperature, water pressure and cross-borehole electrical resistivity data is used to investigate ice/water contents in an ice-rich rock glacier. The landform is close to 0°C and has locally heterogeneous characteristics, ice/water contents and temperatures. The techniques presented continuously monitor temporal and spatial phase changes to a depth of 12 m and provide the basis for a better understanding of accelerating rock glacier movements and future water availability.
Jacopo Boaga, MIrko Pavoni, Alexander Bast, and Samuel Weber
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Reversal polarity are observed in rock glacier seismic refraction tomography. We collected several datasets observing this phenomena in Switzerland and Italy. This phase change may be due to the presence of a thin low-velocity. Our results are confirmed by modelling and analysis of synthetic seismograms to demonstrate that the presence of a low-velocity layer produces a polarity reversal on the seismic gather.
Lars Widmer, Marcia Phillips, and Chasper Buchli
The Cryosphere, 17, 4289–4295, https://doi.org/10.5194/tc-17-4289-2023, https://doi.org/10.5194/tc-17-4289-2023, 2023
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Long-term temperature measurements are challenging to carry out in mountain-permafrost boreholes. The widely used resistance thermistors are highly accurate but prone to drift when they are exposed to moisture, or the cable connecting them is stretched. We explore the possibility of supplementing them with digital sensors and analyse the performance of both systems at 15 depths in the same mountain-permafrost borehole.
Marcia Phillips, Chasper Buchli, Samuel Weber, Jacopo Boaga, Mirko Pavoni, and Alexander Bast
The Cryosphere, 17, 753–760, https://doi.org/10.5194/tc-17-753-2023, https://doi.org/10.5194/tc-17-753-2023, 2023
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A new combination of temperature, water pressure and cross-borehole electrical resistivity data is used to investigate ice/water contents in an ice-rich rock glacier. The landform is close to 0°C and has locally heterogeneous characteristics, ice/water contents and temperatures. The techniques presented continuously monitor temporal and spatial phase changes to a depth of 12 m and provide the basis for a better understanding of accelerating rock glacier movements and future water availability.
Alessandro Cicoira, Samuel Weber, Andreas Biri, Ben Buchli, Reynald Delaloye, Reto Da Forno, Isabelle Gärtner-Roer, Stephan Gruber, Tonio Gsell, Andreas Hasler, Roman Lim, Philippe Limpach, Raphael Mayoraz, Matthias Meyer, Jeannette Noetzli, Marcia Phillips, Eric Pointner, Hugo Raetzo, Cristian Scapozza, Tazio Strozzi, Lothar Thiele, Andreas Vieli, Daniel Vonder Mühll, Vanessa Wirz, and Jan Beutel
Earth Syst. Sci. Data, 14, 5061–5091, https://doi.org/10.5194/essd-14-5061-2022, https://doi.org/10.5194/essd-14-5061-2022, 2022
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This paper documents a monitoring network of 54 positions, located on different periglacial landforms in the Swiss Alps: rock glaciers, landslides, and steep rock walls. The data serve basic research but also decision-making and mitigation of natural hazards. It is the largest dataset of its kind, comprising over 209 000 daily positions and additional weather data.
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.
C. Mulsow, R. Kenner, Y. Bühler, A. Stoffel, and H.-G. Maas
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Anna Haberkorn, Nander Wever, Martin Hoelzle, Marcia Phillips, Robert Kenner, Mathias Bavay, and Michael Lehning
The Cryosphere, 11, 585–607, https://doi.org/10.5194/tc-11-585-2017, https://doi.org/10.5194/tc-11-585-2017, 2017
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The effects of permafrost degradation on rock slope stability in the Alps affect people and infrastructure. Modelling the evolution of permafrost is therefore of great importance. However, the snow cover has generally not been taken into account in model studies of steep, rugged rock walls. Thus, we present a distributed model study on the influence of the snow cover on rock temperatures. The promising results are discussed against detailed rock temperature measurements and snow depth data.
Antoine Marmy, Jan Rajczak, Reynald Delaloye, Christin Hilbich, Martin Hoelzle, Sven Kotlarski, Christophe Lambiel, Jeannette Noetzli, Marcia Phillips, Nadine Salzmann, Benno Staub, and Christian Hauck
The Cryosphere, 10, 2693–2719, https://doi.org/10.5194/tc-10-2693-2016, https://doi.org/10.5194/tc-10-2693-2016, 2016
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This paper presents a new semi-automated method to calibrate the 1-D soil model COUP. It is the first time (as far as we know) that this approach is developed for mountain permafrost. It is applied at six test sites in the Swiss Alps. In a second step, the calibrated model is used for RCM-based simulations with specific downscaling of RCM data to the borehole scale. We show projections of the permafrost evolution at the six sites until the end of the century and according to the A1B scenario.
Rachel Luethi and Marcia Phillips
Geogr. Helv., 71, 121–131, https://doi.org/10.5194/gh-71-121-2016, https://doi.org/10.5194/gh-71-121-2016, 2016
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Long-term borehole temperature monitoring in mountain permafrost environments is challenging under the hostile conditions reigning there. On the basis of data measured in the SLF borehole network we show situations where ground temperature data should be interpreted with caution. A selection of recently observed problems are discussed, and advantages and possible drawbacks of various solutions including data correction, measurement redundancy or alternate instrumentation are presented.
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Discipline: Frozen ground | Subject: Frozen ground hydrology
Brief communication: Mountain permafrost acts as an aquitard during an infiltration experiment monitored with electrical resistivity tomography time-lapse measurements
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Impact of lateral groundwater flow on hydrothermal conditions of the active layer in a high-Arctic hillslope setting
New insights into the drainage of inundated ice-wedge polygons using fundamental hydrologic principles
Soil infiltration characteristics and pore distribution under freezing–thawing conditions
Invited perspective: What lies beneath a changing Arctic?
Sub-permafrost methane seepage from open-system pingos in Svalbard
Soil moisture and hydrology projections of the permafrost region – a model intercomparison
Mirko Pavoni, Jacopo Boaga, Alberto Carrera, Giulia Zuecco, Luca Carturan, and Matteo Zumiani
The Cryosphere, 17, 1601–1607, https://doi.org/10.5194/tc-17-1601-2023, https://doi.org/10.5194/tc-17-1601-2023, 2023
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In the last decades, geochemical investigations at the springs of rock glaciers have been used to estimate their drainage processes, and the frozen layer is typically considered to act as an aquiclude or aquitard. In this work, we evaluated the hydraulic behavior of a mountain permafrost site by executing a geophysical monitoring experiment. Several hundred liters of salt water have been injected into the subsurface, and geoelectrical measurements have been performed to define the water flow.
Christin Hilbich, Christian Hauck, Coline Mollaret, Pablo Wainstein, and Lukas U. Arenson
The Cryosphere, 16, 1845–1872, https://doi.org/10.5194/tc-16-1845-2022, https://doi.org/10.5194/tc-16-1845-2022, 2022
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In view of water scarcity in the Andes, the significance of permafrost as a future water resource is often debated focusing on satellite-detected features such as rock glaciers. We present data from > 50 geophysical surveys in Chile and Argentina to quantify the ground ice volume stored in various permafrost landforms, showing that not only rock glacier but also non-rock-glacier permafrost contains significant ground ice volumes and is relevant when assessing the hydrological role of permafrost.
Alexandra Hamm and Andrew Frampton
The Cryosphere, 15, 4853–4871, https://doi.org/10.5194/tc-15-4853-2021, https://doi.org/10.5194/tc-15-4853-2021, 2021
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To investigate the effect of groundwater flow on the active layer on slopes in permafrost landscapes, we conducted several modeling experiments. We find that groundwater moving downslope in the subsurface causes areas uphill to be warmer than downhill. This effect is explained by differences in heat capacity, conductivity, and infiltration. Therefore, in a changing climate, higher soil moisture could have a cooling effect on the active layer and attenuate warming from higher air temperatures.
Dylan R. Harp, Vitaly Zlotnik, Charles J. Abolt, Bob Busey, Sofia T. Avendaño, Brent D. Newman, Adam L. Atchley, Elchin Jafarov, Cathy J. Wilson, and Katrina E. Bennett
The Cryosphere, 15, 4005–4029, https://doi.org/10.5194/tc-15-4005-2021, https://doi.org/10.5194/tc-15-4005-2021, 2021
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Polygon-shaped landforms present in relatively flat Arctic tundra result in complex landscape-scale water drainage. The drainage pathways and the time to transition from inundated conditions to drained have important implications for heat and carbon transport. Using fundamental hydrologic principles, we investigate the drainage pathways and timing of individual polygons, providing insights into the effects of polygon geometry and preferential flow direction on drainage pathways and timing.
Ruiqi Jiang, Tianxiao Li, Dong Liu, Qiang Fu, Renjie Hou, Qinglin Li, Song Cui, and Mo Li
The Cryosphere, 15, 2133–2146, https://doi.org/10.5194/tc-15-2133-2021, https://doi.org/10.5194/tc-15-2133-2021, 2021
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This paper outlines the results from laboratory tests of soil freezing impacts on infiltration rates, hydraulic conductivity, and soil pore distribution characteristics. The results indicated that macropores (> 5 mm) accounted for < 1 % of the pore-volume-contributed half of the flow in unfrozen conditions and that the freezing of macropores resulted in considerable decreases in hydraulic conductivity. The results should be of interest for cold region hydrology in general.
Jeffrey M. McKenzie, Barret L. Kurylyk, Michelle A. Walvoord, Victor F. Bense, Daniel Fortier, Christopher Spence, and Christophe Grenier
The Cryosphere, 15, 479–484, https://doi.org/10.5194/tc-15-479-2021, https://doi.org/10.5194/tc-15-479-2021, 2021
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Groundwater is an underappreciated catalyst of environmental change in a warming Arctic. We provide evidence of how changing groundwater systems underpin surface changes in the north, and we argue for research and inclusion of cryohydrogeology, the study of groundwater in cold regions.
Andrew J. Hodson, Aga Nowak, Mikkel T. Hornum, Kim Senger, Kelly Redeker, Hanne H. Christiansen, Søren Jessen, Peter Betlem, Steve F. Thornton, Alexandra V. Turchyn, Snorre Olaussen, and Alina Marca
The Cryosphere, 14, 3829–3842, https://doi.org/10.5194/tc-14-3829-2020, https://doi.org/10.5194/tc-14-3829-2020, 2020
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Methane stored below permafrost is an unknown quantity in the Arctic greenhouse gas budget. In coastal areas with rising sea levels, much of the methane seeps into the sea and is removed before it reaches the atmosphere. However, where land uplift outpaces rising sea levels, the former seabed freezes, pressurising methane-rich groundwater beneath, which then escapes via permafrost seepages called pingos. We describe this mechanism and the origins of the methane discharging from Svalbard pingos.
Christian G. Andresen, David M. Lawrence, Cathy J. Wilson, A. David McGuire, Charles Koven, Kevin Schaefer, Elchin Jafarov, Shushi Peng, Xiaodong Chen, Isabelle Gouttevin, Eleanor Burke, Sarah Chadburn, Duoying Ji, Guangsheng Chen, Daniel Hayes, and Wenxin Zhang
The Cryosphere, 14, 445–459, https://doi.org/10.5194/tc-14-445-2020, https://doi.org/10.5194/tc-14-445-2020, 2020
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Widely-used land models project near-surface drying of the terrestrial Arctic despite increases in the net water balance driven by climate change. Drying was generally associated with increases of active-layer depth and permafrost thaw in a warming climate. However, models lack important mechanisms such as thermokarst and soil subsidence that will change the hydrological regime and add to the large uncertainty in the future Arctic hydrological state and the associated permafrost carbon feedback.
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Short summary
We monitor ground temperature, water pressure, and relative ice/water contents in a creeping ice-rich rock glacier in mountain permafrost to study its characteristics during a deceleration period with dry conditions and a summer heat wave. The snowpack has an important role as a provider of water and as a thermal insulator. Snow-poor winters, followed by dry summers, induce cooling and drying of the permafrost, leading to rock glacier deceleration.
We monitor ground temperature, water pressure, and relative ice/water contents in a creeping...
