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(Article of periodic en Anglais - 2012)

Document title

Inclinable shear box simulations of deepening active layers on perennially frozen scree slopes

Authors(s) and Affiliation(s)

RIST A. (1) ; PHILLIPS M. (2) ; SPRINGMAN S.M. (3) ;
(1) Inst. of Geography, Univ., Bern, SUISSE
(2) WSL Inst. for Snow and Avalanche Research SLF, Davos, SUISSE
(3) ETH Swiss Federal Inst. of Technology, Inst. for Geotechnical Engineering IGT, Zurich, SUISSE

Abstract

A series of systematic shear tests were performed using an inclinable shear box containing a coarse-grained active layer overlying a fine-grained permafrost layer, a stratigraphy observed in the field. The angle of mobilised interface friction Φmob was determined as depending on the grain size of the active layer and the permafrost, the water content of the active layer and the ice content of the permafrost. Φmob was found to be 8° lower for ice-free permafrost compared to permafrost containing ice. This result implies a possible long-term decrease of active-layer slope stability on scree slopes in Alpine permafrost terrain under warming conditions

Source

Article of periodic

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

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

Millesime : 2012, vol. 23, no1 [pp. 26-38]

Bibliographic references : 47 ref.

Collation : 6 fig., 3 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.1730

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