Distribution and frequency of snow-avalanche debris transfer in the distal part of colluvial cones in Central North Iceland

Special issue. Sedimentary fluxes and budgets in changing cold environments : quantitative analysis and scaling issues

Auteur(s) et Affiliation(s)

GEOLAB, Univ. Blaise Pascal, Clermont-Ferrand, France
GEOLAB, UMR 6042 CNRS, Clermont-Ferrand, France
Natural Research Centre of North-western Iceland, Sauởárkrókur, Islande
Geological survey of Norway (NGU), Quaternary Geology and Climate Group, NO-7491, Trondheim, Norvege
Dep. of Geography, Norwegian Univ. of Science and Technology (NTNU), Trondheim, Norvege
Dep. of Geography, Queen's Univ., Ontario, Kingston, Canada

Description :
This paper emphasizes the importance of studying diffuse rock debris accumulation in the far distal part of colluvial cones with the aim of defining the spatial distribution and frequency of extreme snow avalanches. The field based methods used in this study confirm the snow avalanche origin of these deposits. A relative age of the deposits is obtained by assessing the vegetation cover of the boulder surfaces and by measuring the rock hardness using a Schmidt hammer. The AA. conclude that there were frequent extreme snow avalanches which have occurred since the Little Ice Age, and that they have decreased in magnitude during the past decade.

Type de document :
Article de monographie

Source :
Geografiska annaler. Series A. Physical geography, issn : 0435-3676, 2010, vol. 92, n°. 2, p. 177-187, nombre de pages : 11, Références bibliographiques : 32 ref.

Date :

Editeur :
Pays édition : Suede, Stockholm, Svenska sällskapet för antropologi och geografi

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