Results 61 to 70 of about 3,816 (189)

Tourism in the Arctic is at risk due to intensifying permafrost degradation

Communications Earth & Environment
Climate change is destabilizing Arctic landscapes by accelerating permafrost degradation, leading to more frequent slope failures, especially during summers.
Alix Varnajot, Eirini Makopoulou
doaj   +1 more source

Response characteristics of vegetation and soil environment to permafrost degradation in the upstream regions of the Shule River Basin

Environmental Research Letters, 2012
Permafrost degradation exhibits striking and profound influences on the alpine ecosystem, and response characteristics of vegetation and soil environment to such degradation inevitably differ during the entire degraded periods.
Shengyun Chen, Wenjie Liu, Xiang Qin, Yushuo Liu, Tongzuo Zhang, Kelong Chen, Fengzu Hu, Jiawen Ren, Dahe Qin   +8 more
doaj   +1 more source

InSAR-measured permafrost degradation of palsa peatlands in northern Sweden [PDF]

The Cryosphere
Climate warming is degrading palsa peatlands across the circumpolar permafrost region. Permafrost degradation may lead to ecosystem collapse and potentially strong climate feedbacks, as this ecosystem is an important carbon store and can transition to ...
S. Valman, S. Valman, M. B. Siewert, D. Boyd, M. Ledger, M. Ledger, D. Gee, B. de la Barreda-Bautista, B. de la Barreda-Bautista, A. Sowter, S. Sjögersten   +10 more
doaj   +1 more source

Disposition Model for Permafrost Degradation in Mountainous Regions

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Permafrost is a widespread thermal phenomenon in Arctic and high mountain regions that, in combination with steep terrain, exerts a key control on slope stability. Its degradation in response to climatic warming can modify the likelihood and timing of rockfall, debris flow and related mass movements. Robust information on the current state and
Peter Mani, Simon Allen, Mathias Bavay, Nils Hählen, Markus Stoffel   +4 more
wiley   +1 more source

Environmental Impacts of permafrost degradation

, 2019
Permafrost underlies approximately 50% of the Canadian landmass and is found in offshore areas beneath the Arctic shelf. Permafrost is warming at depth through taliks, along faults and methane leakage maybe enhanced from historical exploration wells and is also degrading in some areas as the surface active layer is thickening.
openaire   +1 more source

Evaluating Testability of Permafrost Models Through Physical and Thermal Testing in Complex Mountain Terrain, Yukon, Canada

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Due to its subsurface nature, permafrost cannot be directly observed with the naked eye or optical remote sensing. Consequently, accurately describing its distribution and thermal state is challenging. This is especially true in vast, remote environments, where obtaining comprehensive field data is demanding or improbable.
Ria Nicholson, Philip P. Bonnaventure, Nick C. Noad, Madeleine C. Garibaldi, Rabecca Thiessen, Will Kochtitzky   +5 more
wiley   +1 more source

Seismic Performance of Bridge Pile Foundation Considering Effects of Material Freeze-Thaw Deterioration and Permafrost Degradation

Zhongwai Gonglu
In cold and high-seismic regions, such as the Qinghai‒Xizang Plateau in China, the deterioration of material properties caused by freeze-thaw cycles and permafrost degradation due to climate change have become increasingly severe, posing significant ...
ZHANG Xiyin, YU Shengsheng, WANG Wanping, WEN Hairong   +3 more
doaj   +1 more source

Repeated Pleistocene Permafrost Episodes in the Western Pannonian Basin

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Concerning the study of past periglacial processes, the Pannonian Basin is a key area as it contains the southernmost frost polygons found in Central Europe. The presence or absence of permafrost is still, however, a matter of debate, and data on the timing of frost action are also scarce.
Krisztina Sebe, Ágnes Novothny, Gergely Surányi, Barbara Varga, László Fodor, Gábor Csillag   +5 more
wiley   +1 more source

Thaw processes in ice-rich permafrost landscapes represented with laterally coupled tiles in a land surface model [PDF]

The Cryosphere, 2019
Earth system models (ESMs) are our primary tool for projecting future climate change, but their ability to represent small-scale land surface processes is currently limited.
K. S. Aas, L. Martin, J. Nitzbon, J. Nitzbon, J. Nitzbon, M. Langer, M. Langer, J. Boike, J. Boike, H. Lee, T. K. Berntsen, S. Westermann   +11 more
doaj   +1 more source

Internal Structure, Kinematics, and Prehistory of Frozen Debris Lobe‐A (FDL‐A), Brooks Range, Alaska

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Frozen Debris Lobe‐A (FDL‐A)—one of hundreds of FDLs in the Brooks Range of northern Alaska—is a slow‐moving landslide in permafrost that has been the subject of research since 2008 due to its close proximity to the Dalton Highway. Here, we synthesize more than a decade's worth of climate and surface measurements of monitored FDLs, and the ...
Margaret M. Darrow, Esther L. Babcock, Ben A. Leshchinsky   +2 more
wiley   +1 more source