Results 31 to 40 of about 7,581 (228)

Hydrological characteristics of thermokarst lake and its environmental effects on Qinghai-Tibet Plateau

Shui kexue jinzhan, 2022
A comprehensive understanding of the hydrological processes of thermokarst lakes on a seasonal scale is key to evaluating their environmental effects.
Zeyong GAO, Fujun NIU, Yibo WANG, Wei WANG, Zhanju LIN, Jing LUO, Mingxia LYU   +6 more
doaj   +1 more source

Simulating thermokarst lakes [PDF]

Eos, Transactions American Geophysical Union, 2012
Thermokarst lakes, which form from thawing permafrost, alter landscapes and hydrology and can release significant amounts of methane to the atmosphere. To learn more about the dynamics of thermokarst lakes, Kessler et al. created a three‐dimensional numerical model of these lakes that includes the surrounding topography.
openaire   +2 more sources

Susceptibility Modeling and Potential Risk Analysis of Thermokarst Hazard in Qinghai–Tibet Plateau Permafrost Landscapes Using a New Interpretable Ensemble Learning Method

Atmosphere
Climate change is causing permafrost in the Qinghai–Tibet Plateau to degrade, triggering thermokarst hazards and impacting the environment. Despite their ecological importance, the distribution and risks of thermokarst lakes are not well understood due ...
Yuting Yang, Jizhou Wang, Xi Mao, Wenjuan Lu, Rui Wang, Hao Zheng   +5 more
doaj   +1 more source

Permafrost - physical aspects and carbon cycling, databases and uncertainties [PDF]

, 2012
Permafrost is defined as ground that remains below 0°C for at least 2 consecutive years. About 24% of the northern hemisphere land area is underlain by permafrost.
Boike, Julia, Langer, Moritz, Lantuit, Hugues, McGuire, A. D., Muster, Sina, Ovderduin, P. P., Roth, K., Sachs, Torsten, Westermann, Sebastian   +8 more
core   +1 more source

Identifying thermokarst lakes using deep learning and high-resolution satellite images

Science of Remote Sensing
Thermokarst lakes play a critical role in hydrologic connectivity, permafrost stability, and carbon exchange from local to regional scales. Due to the typically small sizes and highly dynamic nature of thermokarst lakes, their identification in large ...
Kuo Zhang, Min Feng, Yijie Sui, Jinhao Xu, Dezhao Yan, Zhimin Hu, Fei Han, Earina Sthapit   +7 more
doaj   +1 more source

Late-Pleistocene Syngenetic Permafrost in the CRREL Permafrost Tunnel, Fox, Alaska [PDF]

, 2008
contributing authors: Bjella, K.L., Bray, M.T., Collins, C.M., Douglas, T.A., Fortier, D., French, H.M., Kanevskiy, M.Z., Shur, Y.L.Late-Pleistocene syngenetic permafrost exposed in the walls and ceiling of the CRREL permafrost tunnel consists of ice-and
French, H.M., Kanevskiy, M.Z., Shur, Y.L.   +2 more
core  

The chronostratigraphy of Late Pleistocene glacial and periglacial aeolian activity in the Tuktoyaktuk Coastlands, NWT, Canada [PDF]

, 2006
Aeolian periglacial sand deposits are common in the Tuktoyaktuk Coastlands of Western Arctic Canada. Regionally extensive and thick aeolian sand-sheet deposits have been observed in two major stratigraphic settings: within a sand unit characterized by ...
Ager, Anderson, Andrews, Bateman, Bateman, Berger, Berger, Berger, Burn, Bégin, Carter, Dallimore, Dijkmans, Dinter, Duk-Rodkin, Duk-Rodkin, Dyke, Dyke, Edwards, Fairbanks, Fryberger, Grootes, Hamilton, Hopkins, Julian B. Murton, Kocurek, Kocurek, Koster, Lambeck, Lea, Lea, Lemmen, MacDonald, Mackay, Mackay, Mark D. Bateman, Martinson, McKee, Mejdal, Michaud, Murray, Murton, Murton, Murton, Murton, Murton, Nelson, Prescott, Riezebos, Ritchie, Ritchie, Ruz, Ruz, Saarnisto, Schwan, Stuiver, Taylor, Vincent, Willemse   +58 more
core   +2 more sources

A Statistical‐Process Hybridized Approach to Modeling Permafrost Distribution in a Boreal Wetland Ecosystem, Whatì, NT, Canada

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT High‐resolution mapping of permafrost in ecologically and topographically complex landscapes remains a major challenge. Existing models of permafrost extent often rely on equilibrium assumptions, which can misrepresent conditions in regions where permafrost persists largely due to ecosystem structure.
Philip P. Bonnaventure, Sophie MacLean, Nick C. Noad, Madeleine C. Garibaldi   +3 more
wiley   +1 more source

Localized Browning in Thermokarst-Dominated Landscapes Reverses Regional Greening Trends Under a Warming Climate in Northeastern Siberia

Remote Sensing
The response of Arctic vegetation to climate warming exhibits pronounced spatial heterogeneity, driven partly by widespread permafrost degradation. However, the role of thermokarst lake development in mediating vegetation-climate interactions remains ...
Ruixin Wang, Ping Wang, Li Xu, Shiqi Liu, Qiwei Huang   +4 more
doaj   +1 more source

Geophysical Applications for Arctic/Subarctic Transportation Planning [PDF]

, 2014
This report describes a series of geophysical surveys conducted in conjunction with geotechnical investigations carried out by the Alaska Department of Transportation and Public Facilities.
Fortier, Richard, Kanevskiy, Mikhail, Munk, Jens, Schnabel, William E., Shur, Yuri, Trochim, Erin   +5 more
core