Permafrost and Periglacial Processes
نویسنده
چکیده
1 Geological Survey of Canada, Natural Resources Canada, Ottawa, Ontario, Canada 2 Geophysical Institute, University of Alaska, Fairbanks, Alaska, USA 3 Department of Geography, University of Ottawa, Ottawa, Ontario, Canada 4 Department of Geography and Environmental Studies, Carleton University, Ottawa, Ontario, Canada 5 Centre d’études nordiques, Université Laval, Québec (QC), Canada 6 United States Geological Survey, Lakewood, Colorado, USA
منابع مشابه
Criteria to discriminate between proglacial and paraglacial environments
the original meaning of “areas peripheral to Pleistocene ice sheets and glaciers” (Lozinski 1909) to one which stresses the distinctive processes of freeze-thaw and permafrost formation. In spite of the comment by Worsley (2004) that the term periglacial has no universally accepted definition, there are really only two options that are in common use: a) an environment of frequent freeze-thaw cy...
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Extensive parts of Arctic permafrost-dominated lowlands were affected by large-scale permafrost degradation, mainly through Holocene thermokarst activity. The effect of thermokarst is nowadays observed in most periglacial lowlands of the Arctic. Since permafrost degradation is a consequence as well as a significant factor of global climate change, it is necessary to develop efficient methods fo...
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Takes Qinghai-Tibet Plateau as a research field, this paper based on the models and algorithms, completes the numerical information extraction of periglacial geomorphology distribution by using SRTM-DEM and annual mean temperature data. Based on the extracted results and remote sensing images, the periglacial geomorphology distribution in Qinghai-Tibet Plateau is achieved by visual interpretati...
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A global warming-induced transition from glacial to periglacial processes has been identified in mountainous regions around the world. Degrading permafrost in pristine periglacial environments can produce acid rock drainage (ARD) and cause severe ecological damage in areas underlain by sulfide-bearing bedrock. Limnological and paleolimnological approaches were used to assess and compare ARDs ge...
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