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(Article of periodic en Anglais - 2011)

Document title

Degrading mountain permafrost in southern Norway : spatial and temporal variability of mean ground temperatures, 1999–2009

published at : Special issue : In honour of Professor Charles harris

Authors(s) and Affiliation(s)

ISAKSEN K. (1) ; ØDEGÅRD R.S. (2) ; ETZELMÜLLER B. (3) ; HILBICH C. (4) ; HAUCK C. (5) ; FARBROT H. (3) ; EIKEN T. (3) ; HYGEN H.O. (1) ; HIPP T.F. (3) ;
(1) Norwegian Meteorological Inst., Oslo, NORVEGE
(2) Univ. College, Gjøvik, NORVEGE
(3) Dep. of Geosciences, Univ., Oslo, NORVEGE
(4) Dep. of Geography, Univ., Zurich, SUISSE
(5) Dep. of Geosciences, Univ., Fribourg, SUISSE

Abstract

A ten-year record (1999-2009) of annual mean ground surface temperatures (MGSTs) and mean ground temperatures (MGTs) was analysed for 16 monitoring sites in Jotunheimen and on Dovrefjell, southern Norway. Warming has occurred at sites with cold permafrost, marginal permafrost and deep seasonal frost. Ongoing permafrost degradation is suggested both by direct temperature monitoring and indirect geophysical surveys. Increased snow depths and an increase in winter air temperatures appear to be the most important factors controlling warming observed over the ten-year period. Geophysical surveys performed in 1999 to delineate the altitudinal limit of mountain permafrost were repeated in 2009 and 2010 and indicated the degradation of some permafrost over the intervening decade

Source

Thematical fascicle

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

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

Millesime : 2011, vol. 22, no 4 [pp. 361-377]

Bibliographic references : 47 ref.

Collation : fig., tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.728

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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