Climate and the limits of permafrost : a zonal analysis

Auteurs :
SMITH, M.W.
RISEBOROUGH, D.W.

Description :
This paper defines the climatic and environmental conditions that determine the limits and continuity of permafrost occurrence, in the Canadian context. The analysis utilizes a functional model that links air, surface and permafrost temperature through seasonal surface transfer functions and subsurface thermal properties. The temperature of permafrost (TTOP) results from the interplay between the air temperature, the nival (snow) offset and the thermal offset. These offset values vary systematically and geographically with freezing and thawing indices, snow cover conditions and ground thermal properties.


Type de document :
Article de périodique

Source :
Permafrost and periglacial processes, issn : 1045-6740, 2002, vol. 13, n°. 1, p. 1-15, nombre de pages : 15, Collation : Illustration, Références bibliographiques : 53 ref.

Date :
2002

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley