CGRG Bibliography of Canadian Geomorphology
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Author : French, H.M.
Date : 1975
Title : Man-induced thermokarst, Sachs Harbour airstrip, Banks Island, NWT
Publication : Canadian Journal of Earth Sciences
Issue : 12(2):
Page(s) : 132-144
Abstract
The disturbed terrain adjacent to the airstrip at Sachs harbour is an example of man-induced thermokarst processes operating within the High Arctic Environment. An irregular topography of mounds and linear depressions has appeared and evidence indicates preferential subsidence along ice-wedges. The underlying sands and gravels are ice-rich with approximately 20-35% excess ice and natural water (ice) contents of between 50 and 150%. Detailed leveling in 1972 and 1973 suggests subsidence and permafrost degradation is still active, over 10 years later. Gullying of the airstrip is a problem partly associated with the thermokarst activity. A comparison is made with man-induced thermokarst terrain in Siberia.
Bibliography of Canadian Geomorphology