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(Article of periodic en Anglais - 2011)

Document title

Isotopic composition and thermal regime of ice wedges in northern Victoria Land, East Antarctica

published at : Special Issue : Stable isotopes and geochemistry of ground ice

Authors(s) and Affiliation(s)

RAFFI R. (1) ; STENNI B. (2) ;
(1) Dep. of Earth Sciences, Sapienza Univ., Rome, ITALIE
(2) Dep. of Geosciences, Univ., Trieste, ITALIE

Abstract

This paper reports the results of oxygen (&O 18) and hydrogen (&D) isotopic analyses of ice wedges and a five-year monitoring programme on the ice-wedge thermal regime at three sites in northern Victoria Land. The purpose of the study was to characterise isotopically the ice wedges, define the processes leading to the formation of their ice and to determine whether thermal conditions can trigger cracking and hence whether ice wedges are active under present-day climate conditions. The isotopic values and observations of hoarfrost crystals in ice-wedge cracks during summer field surveys indicate that sublimation processes control the formation of ice in wedges, especially at high elevations within this region

Source

Thematical fascicle

published at : Permafrost and periglacial processes / ISSN 1045-6740 / CODEN PEPPED

Editor : Wiley, Chichester - ROYAUME-UNI (1990)

Millesime : 2011, vol. 22, no 1 [pp. 65-83]

Bibliographic references : 58 ref.

Collation : fig., tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.701

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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