CGRG Bibliography of Canadian Geomorphology
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Author : Allard, M.; and Seguin, M.K.
Date : 1987.
Title : Permafrost in northern Quebec: state of knowledge and research needs
Publication : Geographie physique et Quaternaire
Issue : 41(1):
Page(s) : 141-152.
Abstract
The state of knowledge on permafrost is discussed from a compilation of previous studies and unpublished work. ... Age and past evolution of permafrost have been estimated using these approaches: a physicomathematical model from thermal data in the Arctic, stratigraphic analysis of palsa bogs and site evaluation of Quaternary geological context. Recent permafrost dynamics have been studied via ecological changes in fens and bogs with the help of old aerial photographs and dendrochronology. Permafrost in the Subarctic may be as old as deglaciation in regions that were never forest-covered; elsewhere, however, it is probably of Neoglacial age. Forest fires probably had an important role on its spreading. The most widespread cryogenics landforms and patterned ground features in the Subarctic are broadly related to the various surficial formations affected by permafrost. In situ measurements of permafrost and active layer processes andthermal regime are suggested in order to evaluate the effects of future climatic changes.
Bibliography of Canadian Geomorphology