Active and Fossil Periglacial Landforms on Mt. Gassan
نویسندگان
چکیده
منابع مشابه
Rock glaciers and related periglacial landforms in the Sierra Nevada, CA, USA; inventory, distribution and climatic relationships
Rock glaciers and related periglacial rock-ice features (RIFs) are abundant yet overlooked landforms in the Sierra Nevada, California, where they occur in diverse forms. We mapped 421 RIFs from field surveys, and grouped these into six classes based on morphology and location. These categories comprise a greater range of frozen-ground features than are commonly described in rock-glacier surveys...
متن کاملPermafrost and Periglacial Processes
The microbial process of methane (CH4) production during the back-freezing of permafrost soils in autumn and the future fate of produced CH4 in the thawing phase of the following spring are not well understood. Long-term CH4 flux studies in the Lena Delta (Siberia) indicate that back-stored CH4 adds to the emission of newly-produced CH4 at the beginning of the vegetation period. Further field a...
متن کاملPermafrost and Periglacial Processes
Sphagnum (spp.) is widely distributed in permafrost regions around the arctic and subarctic. The moisture content of the moss layer affects the thermal insulative capacity and preservation of permafrost. It also controls the growth and collapse history of palsas and other peat mounds, and is relevant, in general terms, to permafrost thaw (therrnokarst). In this study, we test and calibrate seve...
متن کاملPermafrost and Periglacial Processes
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...
متن کاملDistribution and Climatic Relationships of the American Pika (Ochotona princeps) in the Sierra Nevada and Western Great Basin, U.S.A.; Periglacial Landforms as Refugia in Warming Climates
We used a rapid assessment to survey American pika (Ochotona princeps) populations and documented 420 pika site occurrences in southwestern U.S.A. These included 329 sites from the Sierra Nevada (SN), California; 67 from six southwestern Great Basin (swGB) ranges, California and Nevada; 16 from three central Great Basin ranges, Nevada; and 8 from the central Oregon Cascades. Of these, 67% were ...
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ژورنال
عنوان ژورنال: Annals of The Tohoku Geographycal Asocciation
سال: 1969
ISSN: 0387-2777,1884-1244
DOI: 10.5190/tga1948.21.211