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(Article of periodic en Anglais - 2009)

Document title

Two decades of responses (1986-2006) to climate by the Laurichard rock glacier, French Alps

published at : The Permafrost Young Researchers Network (PYRN). Special issue

Authors(s) and Affiliation(s)

BODIN X. (1 2) ; THIBERT E. (3 4) ; FABRE D. (5) ; RIBOLINI A. (6) ; SCHOENEICH P. (2) ; FRANCOU B. (7 8) ; REYNAUD L. (9) ; FORT M. (1) ;
(1) UMR 8586 PRODIG, Univ. Paris-Diderot Paris 7, Paris, FRANCE
(2) Inst. de Géographie Alpine, Univ. Joseph Fourier, Grenoble, FRANCE
(3) Cemagref, UR ETGR, Grenoble, FRANCE
(4) Parc National des Ecrins, Gap, FRANCE
(5) Conservatoire National des Arts et Métiers (CNAM), PARIS, FRANCE
(6) Dip. di Scienze della terra, Univ., Pisa, ITALIE
(7) LTHE, CNRS/ Univ. Joseph Fourier, Grenoble, FRANCE
(8) IRD, Quito, EQUATEUR
(9) LGGE, CNRS/ Univ. Joseph Fourier, Grenoble, FRANCE

Abstract

The Laurichard active rock glacier is the permafrost-related landform with the longest record of monitoring in France, including an annual geodetic survey, repeated geoelectrical campaigns from 1979 onwards and continuous recording of ground temperature since 2003. These data were used to examine changes in creep rates and internal structure from 1986 to 2006. The control that climatic variables exert on rock glacier kinematics was investigated over three time scales. Between the 1980s and the early 2000s, results and discussion about the correlation between surface movement, snow thickness and ground sub-surface temperatures. Finally, unusual surface lowering that accompanied peak velocities in 2004 may be due to a general thaw of the top of the permafrost, probably caused both by two successive snowy winters and by high energy inputs during the warm summer of 2003

Source

Thematical fascicle

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

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

Millesime : 2009, vol. 20, no 4 [pp. 331-344]

Bibliographic references : 1,5 p.

Collation : fig., tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.665

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2010
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