CGRG Bibliography of Canadian Geomorphology
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Author : Harris, S.A.
Date : 1981.
Title : Climatic relationships of permafrost zones in areas of low winter snow cover
Publication : Biuletyn Peryglacjalny
Issue : 30:
Page(s) : 227-240.
Abstract
In areas with under 50 cm snow cover in winter, the permafrost zones show diagnostic long term freezing indices and thawing indices. The warmer boundary of the zone of continuous permafrost traverses the mean annual air temperature (MAAT). The boundary between discontinuous and sporadic permafrost lies just on the cold side of 0 deg. C MAAT. The sporadic permafrost zone includes the zone of ice caves and the regions with patches of ice beneath ponds and peatbogs, extending to 5 deg. C MAAT at a thawing index of 4000 degree days per year. The relationship is applicable to Norway, Iceland, Spitzbergen, Canada and the People's Republic of Mongolia. (Author) | For stations with less than 50 cm of snow cover from December to March, the permafrost zones are defined by the long term averages for freezing and thawing indices. This relationship fits for data from Norway, Iceland, the People's Republic of China, and Canada.
Bibliography of Canadian Geomorphology