CGRG Bibliography of Canadian Geomorphology
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Author : Brown, R.J.E.
Date : 1969.
Title : Factors influencing discontinuous permafrost in Canada
Publication : The Periglacial Environment, Past and Present. --Internat. Assoc. Quaternary Research, 7th Cong. Edited by: T. L. Pewe, Montreal, PQ, Canada: McGill-Queen's University Press
Issue :
Page(s) : 11-53.
Abstract
East of Hudson Bay permafrost extends from the Laurentide scarp north to 58 degrees N., and between the bay and the cordillera it extends northwesterly in a broad band several hundred miles wide to the northern portions of the provinces and the southern portions of the territories. Climatic control of this discontinuous permafrost is borne out by its relation to the mean annual temperature. Permafrost is virtually continuous north of the 20 degrees F mean air isotherm. The distribution of individual islands of permafrost is conditioned by variations in microclimate and terrain features such a relief, drainage, vegetation, and snow cover. The permafrost in Canada's discontinuous zone probably formed after the final retreat of the ice sheets or postglacial inundations, except in the unglaciated portions of the Yukon Territory where its formation is periglacial.
Bibliography of Canadian Geomorphology