منابع مشابه
Effects of Permafrost on Stream Channel Behavior in Arctic Alaska
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متن کاملPhysical and Ecological Changes Associated with Warming Permafrost and Thermokarst in Interior Alaska
1 Geophysical Institute, University of Alaska, Fairbanks, AK, USA 2 ABR, Inc., Fairbanks, AK, USA 3 Department of Botany, University of Florida, Gainesville, FL, USA 4 Department of Civil and Environmental Engineering, University of Alaska, Fairbanks, AK, USA 5 Institute of Northern Engineering, University of Alaska, Fairbanks, AK, USA 6 Department of Geology, Moscow State University, Moscow, R...
متن کاملThe deep permafrost carbon pool of the Yedoma region in Siberia and Alaska
[1] Estimates for circumpolar permafrost organic carbon (OC) storage suggest that this pool contains twice the amount of current atmospheric carbon. The Yedoma region sequestered substantial quantities of OC and is unique because its deep OC, which was incorporated into permafrost during ice age conditions. Rapid inclusion of labile organic matter into permafrost halted decomposition and result...
متن کاملShrinking Thermokarst Ponds and Groundwater Dynamics in Discontinuous Permafrost near Council, Alaska
The purpose of this study was to characterize the geomorphological processes controlling the dynamics of ponds and to identify and characterize groundwater infiltration and surface water dynamics for a tundra terrain located in discontinuous permafrost near Council, Alaska. Thermokarst processes and permafrost degradation were studied, focusing upon the interaction between surface and groundwat...
متن کاملPermafrost Degradation and Ecological Changes Associated with a Warming Climate in Central Alaska
Studies from 1994–1998 on the Tanana Flats in central Alaska reveal that permafrost degradation is widespread and rapid, causing large shifts in ecosystems from birch forests to fens and bogs. Fine-grained soils under the birch forest are ice-rich and thaw settlement typically is 1– 2.5 m after the permafrost thaws. The collapsed areas are rapidly colonized by aquatic herbaceous plants, leading...
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ژورنال
عنوان ژورنال: Journal of Geography (Chigaku Zasshi)
سال: 1993
ISSN: 0022-135X,1884-0884
DOI: 10.5026/jgeography.102.plate3