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(Article of periodic en Anglais - 2014)

Document title

An undercooled scree slope detected by geophysical investigations in sporadic permafrost below 1000 M ASL, Central Austria

Authors(s) and Affiliation(s)

STIEGLER C. (1) ; RODE M. (2) ; SASS O. (2) ; OTTO J.-C. (3) ;
(1) Dept. of Physical geography and Ecosystem Science, Univ., Lund, SUEDE
(2) Dept. of Geography and Regional Science, Graz, AUTRICHE
(3) Dept. of Geography and Geology, Univ., Salzburg, AUTRICHE

Abstract

Multi-method geophysical investigations, accompanied by microclimatic measurements and vegetation mapping, were performed at an undercooled scree slope near Schladming (Austria) in the eastern Alps in order to detect, map and monitor mountain permafrost. Geophysical measurements with electrical resistivity tomography, ground-penetrating radar and seismic refraction indicate the presence of several isolated areas of frozen ground over a full year, far below the regional lower limit of mountain permafrost. Frozen sediments identified at shallow depths (beneath 1-3 m) were 5-20 m thick and ice-rich. Near-surface temperatures at the foot of the scree slope were strongly influenced by pronounced cooling. Vegetation mapping showed a dominance of cryophilic plant species. The results suggest that the scree slope is strongly influenced by the interplay of vegetation cover, ground thermal regime and the distribution of frozen sediments

Source

Article of periodic

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

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

Millesime : 2014, vol. 25, no3 [pp. 194-207]

Bibliographic references : 2 p.

Collation : 13 fig., 1 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.1813

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