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(Article of periodic en Anglais - 2014)

Document title

Changes in the dynamics and thermal regime of the permafrost and active layer of The High Arctic coastal area in north-west Spitsbergen, Svalbard

Authors(s) and Affiliation(s)

SOBOTA I. (1) ; NOWAK M. (1) ;
(1) Dept. of Hydrology and Water Management, Fac. of Earth Sciences, Nicolaus Copernicus Univ., Toruń, POLOGNE

Abstract

The study was conducted on the Kaffiøyra Plain (Svalbard) at several fixed sites, which represent places typical of the region : a sandy beach, a tundra plain and a moraine ridge. Analysis includes both the ground thawing depth and its near-surface thermal structure. The results show that in recent years, at 2 measurement points (on the beach and on the moraine) a significantly deeper thawing was observed. Generally, in the years 2008–2012 the mean thickness of the active layer in the Kaffiøyra region increased by 3% to 6%. Even at the spatially close sites, within similar environments, there are significant differences in the thickness of the active layer. Measurements show that significant changes also occurred in the thawed ground temperature. Mean values of the observed near-surface temperature in recent years (2007–2011) were higher by more than 1.0°C, in comparison to the mean in the late 1970s

Source

Article of periodic

published at : Geografiska annaler. Series A. Physical geography / ISSN 0435-3676 / CODEN GAPGAP

Editor : Svenska sällskapet för antropologi och geografi, Stockholm - SUEDE (1965)

Millesime : 2014, vol. 96, no2 [pp. 227-240]

Bibliographic references : 2 p.

Collation : 7 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 2704 A

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1111/geoa.12045

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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