Changing groundwater discharge dynamics in permafrost regions
نویسندگان
چکیده
منابع مشابه
Shrinking 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...
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The permafrost regions occupy about 25% of the Northern Hemisphere's terrestrial surface, and more than 60% of that of Russia. Warming, thawing, and degradation of permafrost have been observed in many locations in recent decades and are likely to accelerate in the future as a result of climatic change. Changes of permafrost have important implications for natural systems, humans, and the econo...
متن کاملInvestigation of submarine groundwater discharge
Coastal hydrogeologists and oceanographers now recognize the potentially significant contribution that submarine groundwater discharge (SGD) could make to the coastal ocean. SGD may be both volumetrically and chemically important to coastal water and chemical budgets. A worldwide compilation of observed SGD shows that groundwater seepage from the land to the ocean occurs in many environments al...
متن کاملCurrent Magnitude and Mechanisms of Groundwater Discharge in the Arctic: Case Study from Alaska.
To better understand groundwater-surface water dynamics in high latitude areas, we conducted a field study at three sites in Alaska with varying permafrost coverage. The natural groundwater tracer ((222)Rn, radon) was used to evaluate groundwater discharge, and electrical resistivity tomography (ERT) was used to examine subsurface mixing dynamics. Different controls govern groundwater discharge...
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Clare E. Robinson, Pei Xin, Isaac R. Santos, Matthew A. Charette, Ling Li, D. A. Barry 1 Department of Civil and Environmental Engineering, Western University, London, Canada 2 State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, China National Marine Science Centre, Southern Cross University, Coffs Harbour, NSW, Australia 4 Department of Marin...
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ژورنال
عنوان ژورنال: Environmental Research Letters
سال: 2018
ISSN: 1748-9326
DOI: 10.1088/1748-9326/aad404