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(Article of periodic en Anglais - 1998)

Document title

Sublimation of ice through sediment in Beacon Valley, Antarctica

published at : Special issue : the geomorphic and climatic significance of rock glaciers

Authors(s) and Affiliation(s)

HINDMARSH R.C.A. ; VAN DER WATEREN F.M. ; VERBERS A.L.L.M. ;

Abstract

The time-dependent physics of ice sublimation through thin layers of till is considered, to determine whether sublimation could be sufficiently slow to permit the preservation of ice for 8 MA in the Dry Valleys, Antarctica. Steady-state models suggest that sublimation is rate-controlled by vapor transport. A time-dependent model coupling vapor concentration, air pressure, temperature and ice concentration is formulated, and the resulting equations solved non-linearly. The results mean either that vapor transport is being slowed down by some unconsidered physical process or that the ice is much younger than 8 Ma

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 : 1998, vol. 80, no 3-4 [pp. 209-219]

Bibliographic references : 18 ref.

Language

Anglais

INIST-CNRS, Cote INIST : 2704 A

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 1999.
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