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(Article of periodic en Anglais - 2011)

Document title

Ice thickness and basal conditions of Vestfonna ice cap, eastern Svalbard

published at : The International Polar Year project "Kinnvika" - Arctic warming and impact research at 80° N

Authors(s) and Affiliation(s)

PETTERSSON R. (1) ; CHRISTOFFERSEN P. (2) ; DOWDESWELL J.A. (2) ; POHJOLA V.A. (1) ; HUBBARD A. (3) ; STROZZI T. (4) ;
(1) Dep. of Earth Sciences, Univ., Uppsala, SUEDE
(2) Scott Polar Research Inst., Dept. of Geography, Univ., Cambridge, ROYAUME-UNI
(3) Inst. of Geography and Earth Sciences, Univ. of Wales, Aberystwyth, ROYAUME-UNI
(4) Gamma Remote Sensing, Gümligen, SUISSE

Abstract

The AA. combined ground-based pulsed radar data collected in 2008–2009 with airborne radio-echo sounding data acquired in 1983 and 1986 over Vestfonna ice cap, Svalbard. The airborne dataset mainly covers the fast-flowing outlet glaciers and the marginal zone, while the ground-based data explicitly cover the interior part of the ice cap. The data presented here are thus the first complete estimate of bed topography and ice thickness. The need to include more volume observations in the derivations of volume-area scaling parameters is emphasized. Basal reflectivity values suggest that fast-flowing outlet glaciers are underlain by temperate conditions. The geometric boundaries and basal conditions for Vestfonna will be critical additions to the development of numerical models of the ice cap and to the estimation of more accurate area-volume scaling parameters

Source

Thematical fascicle

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

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

Millesime : 2011, vol. 93, no 4 [pp. 311-322]

Bibliographic references : 2 p.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 2704 A

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1111/j.1468-0459.2011.00438.x

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