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(Article of periodic en Anglais - 2011)

Document title

Equivalent elevation: a new method to incorporate variable surface lapse rates into mountain permafrost modelling

Authors(s) and Affiliation(s)

LEWKOWICZ A.G. (1) ; BONNAVENTURE P.P. (1) ;
(1) Dep. of Geography, Univ., Ottawa, CANADA

Abstract

Permafrost is present at multiple elevations with no defined lower limit in the southern Yukon Territory, Canada. Empirical statistical modelling of permafrost probability in the region required the development of equivalent elevation, a new variable that reflects measured differences between surface air temperature lapse rates below and above treeline. There is a strong relationship between the magnitude and sign of surface lapse rates below treeline and the annual amplitude of monthly air temperatures at nearby climate stations, which permits prediction of equivalent elevation for the entire region. Permafrost probability modelling using equivalent elevation produced statistically significant results in several study areas

Source

Article of periodic

published at : Permafrost and periglacial processes / ISSN 1045-6740 / CODEN PEPPED

Editor : Wiley, Chichester - ROYAUME-UNI (1990)

Millesime : 2011, vol. 22, no2 [pp. 153-162]

Bibliographic references : 22 ref.

Collation : 8 fig., 3 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.720

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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