IGB

Connexion

(Article of periodic en Anglais - 2008)

Document title

Solifluction processes on permafrost and non-permafrost slopes : results of a large-scale laboratory simulation

Authors(s) and Affiliation(s)

HARRIS C. (1) ; KERN-LUETSCHG M. (1) ; MURTON J. (2) ; FONT M. (3) ; DAVIES M. (4) ; SMITH F. (5) ;
(1) School of Earth and Ocean Sciences, Univ., Cardiff, ROYAUME-UNI
(2) Univ. of Sussex, Dept. of Geography, Brighton, ROYAUME-UNI
(3) Lab. M2C, Univ. de Caen-Basse Normandie, CNRS, FRANCE
(4) Faculty of Engineering, Univ., Auckland, NOUVELLE-ZELANDE
(5) School of Engineering, Univ., Dundee, ROYAUME-UNI

Abstract

The AA. compare solifluction processes observed in 2 large-scale laboratory physical models that had identical slope geometries and soil characteristics, but contrasting thermal regimes. Model 1 was subject to cycles of freezing and thawing from the surface to the base (simulating seasonally frozen ground), while in Model 2 a permafrost table was maintained at the base and active layer thaw/freez was simulated with a thaw front penetrating from the surface downwards and from the permafrost table upwards. These experiments were run in parallel with scaled centrifuge physical modelling experiments and validated against field studies in Dovrefjell, Norway and Svalbard. The results show that soil shear strain occurred during thaw consolidation and was accompanied by raised pore water pressures

Source

Article of periodic

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

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

Millesime : 2008, vol. 19, no4 [pp. 359-378]

Bibliographic references : 45 ref.

Collation : 14 fig., 2 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.630

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
Refdoc record number (ud4) : 21288001 : Permanent link - XML version
Powered by Pxxo