Ground thermal regime and permafrost distribution under a changing climate in Northern Norway

Auteur(s) et Affiliation(s)



Description :
Since 2002, ground and ground surface temperatures have been systematically measured in the mountains of Troms and Finnmark, northern Norway. These data were used to calibrate and validate a transient heat flow model and a spatial permafrost model, to address ground thermal development since the end of the Little Ice Age, as well as possible permafrost responses to anticipated future climate changes. Approximately 20 per cent of the land area is underlain by permafrost, and in Finnmark, permafrost in palsa mires seems to dominate. The study identifies 3 major permafrost regions in northern Norway : (1) maritime mountain permafrost in western Troms; (2) continental permafrost above the treeline and in bogs in Finnmark; and (3) Low Arctic permafrost on the peninsula of Varangerhalvøya, forming a transition between the Scandinavian mountain-dominated permafrost in the south and the arctic permafrost towards the north and east.


Type de document :
Article de périodique

Source :
Permafrost and periglacial processes, issn : 1045-6740, 2013, vol. 24, n°. 1, p. 20-38, nombre de pages : 19, Références bibliographiques : 2 p.

Date :
2013

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