ABSTRACT. Field measurements of the influence of snow on ground temperatures, at a depth of 90 cm., were carried out during 1968-73 at Garry Island, N.W.T. The results show that the ameliorating effect of snow can be expressed by a regres-sion equation. The side slopes tend to have the highest mean...
| Main Authors: | , , , , |
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.564.4725 http://pubs.aina.ucalgary.ca/arctic/arctic27-4-287.pdf |
| Summary: | ABSTRACT. Field measurements of the influence of snow on ground temperatures, at a depth of 90 cm., were carried out during 1968-73 at Garry Island, N.W.T. The results show that the ameliorating effect of snow can be expressed by a regres-sion equation. The side slopes tend to have the highest mean annual temperatures; the flats the lowest; and the ridges intermediate. At Garry Island, where permafrost is thick, variations in snow cover are probably not reflected in the position of the bottom of permafrost. By contrast, in the nearby alluvial islands of the Mackenzie Delta, where permafrost is thin, the effects of snow on the position of the lower permafrost surface are probably considerable. RÉSUMÉ. Couvert neigeux et température du sol, île de Garry. T.N.O. De 1968 à 1973 inclusivement, dans l’île de Garry, T.N.O., les auteurs ont mesuré l’influence de la neige sur les températures du sol, à une profondeur de 90 cm. Les résultats démontrent que l’effet “améliorateur ” de la neige peut s’exprimer par une équation de régression. Les pentes latérales tendent à avoir les plus hautes températures moyennes annuelles, les plats les plus basses, et les crêtes les intermédiaires. Dans |
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