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(Article of periodic en Anglais - 2012)

Document title

Detection of mountain permafrost by combining high resolution surface and subsurface information - an example from the Glatzbach catchment, Austrian Alps

published at : Concepts and implications of environmental change and human impact : studies from Austrian geomorphological research

Authors(s) and Affiliation(s)

OTTO J.-C. (1) ; KEUSCHNIG M. (1 2) ; GÖTZ J. (1) ; MARBACH M. (1) ; SCHROTT L. (1) ;
(1) Dep. of Geography and Geology, Univ., Salzburg, AUTRICHE
(2) alpS - Centre for Climate Change Adaptation Technologies, Innsbruck, AUTRICHE

Abstract

The AA. combine high resolution surface data derived from terrestrial laser scanning with geophysical information on the underground conditions using ground penetrating radar and electrical resistivity tomography and ground surface temperature data in order to understand the effects of surface characteristics on permafrost distribution in the Alpine Glatzbach catchment. Analysis of surface roughness as a proxy for grain size distribution reveals that the lower boundary of discontinuous and sporadic permafrost is lowered on rough surfaces compared to fine-grain zones. At the same location modelled potential summer solar radiation in coarse grain zones is reduced by up to 40% compared to surfaces of fine grain sizes. The mostly patchy permafrost distribution at the Glatzbach can therefore be attributed to local surface cover characteristics, particularly regolith grain size and its influence on solar radiation

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 : 2012, vol. 94, no 1 [pp. 43-57-]

Bibliographic references : 42 ref.

Collation : fig., tab.

Language

Anglais

INIST-CNRS, Cote INIST : 2704 A

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1111/j.1468-0459.2012.00455.x

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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