CGRG Bibliography of Canadian Geomorphology
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Author : Brown, R.J.E.
Date : 1973
Title : Influence of climate and terrain factors on ground temperatures at three locations in the permafrost region of Canada
Publication : Permafrost: North American Contribution, Second International Permafrost Conference, Yakutskm USSR. Washington, DC: National Academy of Science, Publication
Issue : 2115:
Page(s) : 27-34
Abstract
Regular periodic measurements (at least monthly) of ground temperatures are being taken at three locations in northern Canada to assess the influence of climatic and terrain factors on permafrost. These are Thompson, Manitoba, situated in the southern part of the discontinuous permafrost zone, Yellowknife, Northwest Territories, in the northern part of the discontinuous permafrost zone, and Devon Island, located in the Canadian Arctic Archipelago (Queen Elizabeth Islands) in the northern part of the continuous zone. Ground temperature measurements with thermocouple cables down to the 15-m depth in various types of terrain are being taken at these locations and analyzed to determine the range of mean annual ground temperatures that may exist at any one site in the permafrost region. Mean annual ground temperatures at depths down to 15 m may differ over a 2 deg c range among various types of terrain at any one location in the permafrost region. These variations are reflected in different depths of active layer that may range from less than 0.5 m to more than 2 m, even in the northern part of the continuous zone. Variations greater than 1 deg c may occur even between sites only a few tens of meters apart. These local differences can reflect significant differences in the extent and thickness of permafrost and the susceptibility to thawing
Bibliography of Canadian Geomorphology