Results 201 to 210 of about 973,278 (223)

Mountain permafrost landscapes of Yakutia

Geography and Natural Resources, 2009
Abstract An analysis is made of the spectrum of altitudinal zonality of mountain permafrost landscapes of Yakutia. The intervals of the values of characteristics of particular landscape altitudinal zones are provided, namely, the marks of their boundaries in accordance with a change in the latitude of the locality, the indices of freezing and thawing,
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Current State of Permafrost Landscapes of the Prilensky Plateau

Geoinformatika, 2023
The article presents the results of studying the structure of permafrost landscapes in the area of discontinuous distribution of permafrost soils in large-scale mapping. The actual material was collected by the authors in the course of research and field work on the Power of Siberia project.
Nikolai A. Fedorov, Aliona A. Shestakova
openaire   +1 more source

Landscape-driven carbon export from small coastal permafrost watersheds

2020
<p>Ongoing climate warming in the western Canadian Arctic is leading to thawing of permafrost soils and subsequent mobilization of its organic matter (OM) pool. Part of this mobilized terrestrial OM enters the aquatic system as dissolved organic matter (DOM) and is laterally transported from land to sea.
Niek Speetjens, George Tanski, Victoria Martin, Julia Wagner, Andreas Richter, Gustaf Hugelius, Rachele Lodi, Christian Knoblauch, Boris Koch, Colin Stedmon, Jorien Vonk   +10 more
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Airborne Bacteria over Thawing Permafrost Landscapes in the Arctic

Environmental Science & Technology
Rapid warming in the Arctic, outpacing global rates, is driving significant changes in cryospheric landscapes, including the release of long-preserved microorganisms. This study focuses on thawing permafrost in Northern Alaska, where microbes previously preserved in frozen soils are introduced into thermokarst lakes, rivers, and coastal waters and may ...
Marina Nieto-Caballero, Kevin R. Barry, Thomas C. J. Hill, Thomas A. Douglas, Paul J. DeMott, Sonia M. Kreidenweis, Jessie M. Creamean   +6 more
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Changes in Permafrost Landscapes Under Global Change

2001
Permafrost is susceptible to subtle changes in environmental conditions, including climate and surface disturbance. Relative to climate, land use is anticipated to be a more important component of global change in the coming decades. However, climate is anticipated to surpass land use as a factor later in the next century, particularly in the Arctic ...
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The Mackenzie Delta: An Archetypal Permafrost Landscape

2009
The Mackenzie Delta, in Canada’s western Arctic, is North America’s largest arctic delta. For over half the year the rivers and lakes of this vast alluvial plain are ice covered. Permafrost is ubiquitous in the delta and the surrounding landscape. Treeline traverses the delta, separating closed-canopy white spruce forests in southern parts from low ...
openaire   +1 more source

Permafrost Thaw in Northern Peatlands: Rapid Changes in Ecosystem and Landscape Functions

Ecosystem Collapse and Climate Change, 2021
D. Olefeldt, L. Heffernan, Miriam C. Jones, A. Sannel, C. Treat, M. Turetsky   +5 more
semanticscholar   +1 more source

Improving Permafrost Mapping in Southern Tibetan Plateau Using Machine Learning and Rock Glacier Inventory

Permafrost and Periglacial Processes
As a key component of the cryosphere, permafrost is sensitive to climate change, but mapping permafrost, especially in the Tibetan Plateau, has been challenging due to the heterogeneous mountainous landscape and limited representativeness of ground ...
Dezhao Yan, Min Feng, Zhongyi Hu, Jinhao Xu, Xin Li   +4 more
semanticscholar   +1 more source

Advances in InSAR Analysis of Permafrost Terrain

Permafrost and Periglacial Processes
Differential interferometric synthetic aperture radar (InSAR) is a remote sensing technique for measuring surface displacements with precision down to millimeters, most commonly from satellites.
S. Zwieback, L. Liu, L. Rouyet, N. Short, T. Strozzi   +4 more
semanticscholar   +1 more source

Carbon Fate, Iron Dissolution, and Molecular Characterization of Dissolved Organic Matter in Thawed Yedoma Permafrost under Varying Redox Conditions.

Environmental Science and Technology
Permafrost soils store ∼50% of terrestrial C, with Yedoma permafrost containing ∼25% of the total C. Permafrost is undergoing degradation due to thawing, with potentially hazardous effects on landscape stability and water resources.
Matheus Sampaio Carneiro Barreto, Rucha P. Wani, A. Goranov, Tyler D. Sowers, M. Fischel, Thomas A Douglas, Patrick G. Hatcher, Donald L. Sparks   +7 more
semanticscholar   +1 more source