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

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

Auteur(s) et Affiliation(s)

Dep. of Earth Sciences, Univ., Uppsala, Suede
Scott Polar Research Inst., Dept. of Geography, Univ., Cambridge, Royaume-Uni
DOWDESWELL, J.A.
Scott Polar Research Inst., Dept. of Geography, Univ., Cambridge, Royaume-Uni
POHJOLA, V.A.
Dep. of Earth Sciences, Univ., Uppsala, Suede
HUBBARD, A.
Inst. of Geography and Earth Sciences, Univ. of Wales, Aberystwyth, Royaume-Uni
STROZZI, T.
Gamma Remote Sensing, Gümligen, Suisse
POHJOLA, V.
Dep. of Earth Sciences, Univ., Uppsala, Suede
Arctic Centre, Univ. of Lapland, Rovaniemi, Finlande
MOORE, J.C.
Dep. of Earth Sciences, Univ., Uppsala, Suede
Arctic Centre, Univ. of Lapland, Rovaniemi, Finlande
College of Global Change and Earth System Science, Normal Univ., Beijing, Chine
PASTUSIAK, T.
Maritime Univ., Gdynia, Pologne


Description :
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.


Type de document :
Article de monographie

Source :
Geografiska annaler. Series A. Physical geography, issn : 0435-3676, 2011, vol. 93, n°. 4, p. 311-322, nombre de pages : 12, Références bibliographiques : 2 p.

Date :
2011

Editeur :
Pays édition : Suede, Stockholm, Svenska sällskapet för antropologi och geografi

Langue :
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)