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(Article of periodic en Anglais - 2009)

Document title

Lake-ice blisters, Terra Nova Bay area, Northern Victoria Land, Antarctica

Authors(s) and Affiliation(s)

GUGLIELMIN M. (1) ; LEWKOWICZ A.G. (2) ; FRENCH H.M. (3) ; STRINI A. (4) ;
(1) DBSF, Insubria Univ., Varese, ITALIE
(2) Dep. of Geography, Univ. of Ontario, Ottawa, CANADA
(3) Dep. of Geography and Earth Sciences, Univ. Ontario, Ottawa, CANADA
(4) Dip. Scienze della Terra, Univ., Milano, ITALIE

Abstract

Ice blisters develop annually on perennially frozen lakes in Northern Victoria Land. They are believed to be caused by hydrostatic pressures generated through progressive freezing of solute-rich water beneath the lake-ice cover during winter. Lake-ice blisters in the study area differ from icing blisters described from the northern hemisphere. The latter are caused by hydraulic pessures and are found at locations such as river beds or spring sites on sloping terrain. The Antarctic lake-ice blisters reflect the occurrence of dry-based perennially frozen lakes with high salt contents in an extremely cold and arid environment

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 : 2009, vol. 91, no2 [pp. 99-111]

Bibliographic references : 27 ref.

Collation : 9 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 2704 A

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
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