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(Article of periodic en Anglais - 2013)

Document title

The formation of supraglacial debris covers by primary dispersal from transverse englacial debris bands

Authors(s) and Affiliation(s)

KIRKBRIDE M.P. (1) ; DELINE P. (2) ;
(1) Geography, School of Social and Environmental Sciences, Univ., Dundee, ROYAUME-UNI
(2) Lab. EDYTEM, Univ. Savoie, CNRS, Le Bourget-du-Lac, FRANCE

Abstract

Glaciological controls on debris cover formation are investigated from the perspective of primary dispersal of supraglacial debris across a melting ice surface. This involves the migration of angled debris septa outcrops across a melting, thinning glacier ablation zone. First, simple geometric relations between englacial septa and the supraglacial debris load are outlined to elucidate the role of glaciological variables (gradient, ice motion, ablation, rate of glacier thinning) on debris cover formation. Second, these relations are quantified at a small alpine glacier (Glacier d'Estelette, Italian Alps) to present an explanatory model of why certain parts of the glacier are becoming more rapidly debris-covered than others. Finally, the implications of the model for the debris-cover transition are discussed in relation to the sensitivity of different glacier terminus types to debris-cover formation

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2013, vol. 38, no15 [pp. 1779-1792]

Bibliographic references : 2 p.

Collation : 12 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3416

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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