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(Article of periodic en Anglais - 2011)

Document title

On the connection between debris flow activity and permafrost degradation : a case study from the Schnalstal, South Tyrolean Alps, Italy

Authors(s) and Affiliation(s)

SATTLER K. (1 2) ; KEILER M. (1) ; ZISCHG A. (3) ; SCHROTT L. (4) ;
(1) Dep. of Geography and Regional Research Univ., Vienna, AUTRICHE
(2) School of Geography, Environment and Earth Sciences, Victoria Univ., Wellington, NOUVELLE-ZELANDE
(3) Abenis Alpinexpert GmbH/srl, Bozen, ITALIE
(4) Dep. of Geography and Geology, Univ., Salzburg, AUTRICHE

Abstract

The possible influence of permafrost degradation on the formation of debris flows in an area of the South Tyrolean Alps was examined by comparing debris flow activity since 1983 with the modelled contemporary permafrost distribution. The study focused on the spatial congruence of new initiation zones and potentially marginal permafrost, which should be especially sensitive to climatic change and is presumed to be currently degrading. The results show that distinct changes in the spatial position of debris flow initiation areas mainly occurred at elevations above this marginal zone. Consequently, the changes detected in debris flow activity do not appear to have been influenced by atmospheric warming-induced degradation of permafrost. However, a link may exist to the thickening of the active layer caused by the melting of a glacier

Source

Article of periodic

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

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

Millesime : 2011, vol. 22, no3 [pp. 254-265]

Bibliographic references : 2 p.

Collation : 5 fig., 6 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.730

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