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(Article of periodic en Anglais - 2011)

Document title

Physical properties and formation of flutes at a polythermal valley glacier : Midre Lovénbreen, Svalbard

Authors(s) and Affiliation(s)

ROBERSON S. (1) ; HUBBARD B. (2) ; COULSON H.R. (2) ; BOOMER I. (3) ;
(1) Dep. of Geotechnology, Fac. of Civil Engineering and Geosciences, Univ. of Technology, Delft, PAYS-BAS
(2) Centre for Glaciology, Inst. Geography and Earth Sciences, Univ. Wales, Aberystwyth, ROYAUME-UNI
(3) School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, ROYAUME-UNI

Abstract

Frozen flutes are observed subglacially where they protrude into the debris-rich basal ice layer of the glacier. Particle-size analysis shows that flutes are depleted in gravel-sized particles relative to adjacent subglacial till. Ice sampled from flutes is enriched in δ18O relative to overlying glacier ice and debris-rich basal ice. These properties are interpreted to reflect the formation of flutes by the squeezing of till into basal cavities associated with boulders beneath warm-based ice in the interior of the glacier

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 : 2011, vol. 93, no2 [pp. 71-88]

Bibliographic references : 55 ref.

Collation : 10 fig., 4 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 2704 A

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1111/j.1468-0459.2011.00420.x

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