IGB

Connexion

(Article of periodic en Anglais - 2008)

Document title

Permafrost degradation and slope instability in the Italian Alps

published at : Modelling of high-mountain relief

Authors(s) and Affiliation(s)

DRAMIS F. (1) ; GUGLIELMIN M. (2) ;
(1) Dep. of Geological Sciences "Roma Tre" Univ., Rome, ITALIE
(2) Dep. of Structural and Functional Biology, Insubria Univ., Varese, ITALIE

Abstract

This short paper stresses the role of permafrost degradation in inducing slope instability and mass movements in the Italian Alps, with special reference to debris flows. The role of permafrost degradation in triggering landslides from hard rock slopes as a response to climatic warming has been pointed out only recently. Geotechnical investigations demonstrate that ice-filled fractured rock slopes at temperatures between -2° and 0°C are less stable than when in an unfrozen state. The Val Pola rockslide, whose accumulation mass included ice-cemented blocks, could be explained therefore as the result of strength reduction along pre-existing potential sliding surfaces, filled with warming ground-ice

Source

Thematical fascicle

published at : Geographia polonica / ISSN 0016-7282 / CODEN GGPLAE

Editor : Państwowe Wydawnictwo Naukowe, Warszawa - POLOGNE (1964)

Millesime : 2008, vol. 81, no 1 [pp. 19-28]

Bibliographic references : 1,5 p.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 12059

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
Refdoc record number (ud4) : 22073467 : Permanent link - XML version
Powered by Pxxo