Results 21 to 30 of about 2,607,747 (325)

Topographic and Ground‐Ice Controls on Shallow Landsliding in Thawing Arctic Permafrost

Geophysical Research Letters, 2021
An increase in Arctic shallow landsliding is a potential consequence of climate warming. Warmer summer‐air temperatures and larger rainfall events drive heat into the active layer, melting ice and decreasing soil shear stress.
H. Mithan, Tristram Hales, P. Cleall
semanticscholar   +1 more source

Formation of Gas-Emission Craters in Northern West Siberia: Shallow Controls

Geosciences, 2021
Gas-emission craters discovered in northern West Siberia may arise under a specific combination of shallow and deep-seated permafrost conditions. A formation model for such craters is suggested based on cryological and geological data from the Yamal ...
Evgeny Mikhailovich Chuvilin, Natalia Sergeevna Sokolova, Boris Aleksandrovich Bukhanov, Dinara Anvarovna Davletshina, Mikhail Yurievich Spasennykh   +4 more
doaj   +1 more source

Recognition and Classification of Martian Chaos Terrains Using Imagery Machine Learning: A Global Distribution of Chaos Linked to Groundwater Circulation, Catastrophic Flooding, and Magmatism on Mars

Remote Sensing, 2022
Martian chaos terrains are fractured depressions consisting of block landforms that are often located in source areas of outflow channels. Numerous chaos and chaos-like features have been found on Mars; however, a global-scale classification has not been
Hiroki Shozaki, Yasuhito Sekine, Nicholas Guttenberg, Goro Komatsu   +3 more
doaj   +1 more source

Permafrost Ground Ice Melting and Deformation Time Series Revealed by Sentinel-1 InSAR in the Tanggula Mountain Region on the Tibetan Plateau

Remote Sensing, 2022
In this study, we applied small baseline subset-interferometric synthetic aperture radar (SBAS-InSAR) to monitor the ground surface deformation from 2017 to 2020 in the permafrost region within an ~400 km × 230 km area covering the northern and southern ...
Lingxiao Wang, Lin Zhao, Huayun Zhou, Shibo Liu, Erji Du, Defu Zou, Guangyue Liu, Chong Wang, Yan Li   +8 more
doaj   +1 more source

Towards accurate quantification of ice content in permafrost of the Central Andes – Part 1: Geophysics-based estimates from three different regions [PDF]

The Cryosphere, 2022
Increasing water scarcity in the Central Andes due to ongoing climate change recently caused a controversy and debate on the significance of permafrost occurrences for the hydrologic cycle.
C. Hilbich, C. Hauck, C. Mollaret, P. Wainstein, L. U. Arenson   +4 more
doaj   +1 more source

High resolution mapping shows differences in soil carbon and nitrogen stocks in areas of varying landscape history in Canadian lowland tundra

Geoderma, 2023
Soil organic carbon (SOC) in Arctic coastal polygonal tundra is vulnerable to climate change, especially in soils with occurrence of large amounts of ground ice.
Julia Wagner, Victoria Martin, Niek J. Speetjens, Willeke A'Campo, Luca Durstewitz, Rachele Lodi, Michael Fritz, George Tanski, Jorien E. Vonk, Andreas Richter, Annett Bartsch, Hugues Lantuit, Gustaf Hugelius   +12 more
doaj   +1 more source

The shifting mosaic of ice-wedge degradation and stabilization in response to infrastructure and climate change, Prudhoe Bay Oilfield, Alaska, USA1

Arctic Science, 2022
We studied processes of ice-wedge degradation and stabilization at three sites adjacent to road infrastructure in the Prudhoe Bay Oilfield, Alaska, USA.
Mikhail Kanevskiy, Yuri Shur, D.A. (Skip) Walker, Torre Jorgenson, Martha K. Raynolds, Jana L. Peirce, Benjamin M. Jones, Marcel Buchhorn, Georgiy Matyshak, Helena Bergstedt, Amy L. Breen, Billy Connor, Ronald Daanen, Anna Liljedahl, Vladimir E. Romanovsky, Emily Watson-Cook   +15 more
doaj   +1 more source

Dispersed ground ice of permafrost peatlands: Potential unaccounted carbon, nutrient and metal sources.

Chemosphere, 2020
The physical and chemical consequences of massive ground ice (wedges) melt upon permafrost thaw is one of the central issues of environmental research linked to climate warming in the Arctic.
A. Lim, S. Loiko, D. Kuzmina, I. Krickov, L. Shirokova, S. P. Kulizhsky, S. Vorobyev, O. Pokrovsky   +7 more
semanticscholar   +1 more source

Texture and structure of the Late Holocene ground ice in the Northern West Siberia

Лëд и снег, 2017
The Late Holocene ground ices are occurred due to freeze cracking, slope, thermocast, thermoerosion pro‑ cesses. New formation ice within may intervene to the Pleistocene, lower Holocene ground ice and perma‑ frost and can really complicate their ...
Ya. V. Tikhonravova, E. A. Slagoda, V. V. Rogov, E. I. Galeeva, V. V. Kurchatov   +4 more
doaj   +1 more source

Mapping simulated circum-Arctic organic carbon, ground ice, and vulnerability of ice-rich permafrost to degradation

Progress in Earth and Planetary Science, 2020
Permafrost is a large reservoir of soil organic carbon, accounting for about half of all the terrestrial storage, almost equivalent to twice the atmospheric carbon storage.
Kazuyuki Saito, H. Machiya, G. Iwahana, H. Ohno, T. Yokohata   +4 more
semanticscholar   +1 more source