Triggering mechanisms of slope instability processes and sediment failures on continental margins: a geotechnical approach

doi:10.1016/j.margeo.2004.10.011

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Triggering mechanisms of slope instability processes and sediment failures on continental margins: a geotechnical approach

Publication Type

Publication

Publication date

2004-12

Language

English

Full Text

http://archimer.ifremer.fr/doc/2004/publication-700.pdf (2.49 Mo)

Author(s)

Sultan Nabil, Cochonat Pierre, Canals M, Cattaneo Antonio, Dennielou Bernard, Haflidason H, Laberg J, Long D, Mienert J, Trincardi F, Urgeles R, Vorren T, Wilson C

Affiliation(s):

IFREMER, Plouzane, France.
Univ Barcelona, E-08007 Barcelona, Spain.
IGM, Bologna, Italy.
Univ Bergen, N-5020 Bergen, Norway.
Univ Tromso, N-9001 Tromso, Norway.
British Geol Survey, Edinburgh, Midlothian, Scotland.

Source:

Marine Geology (0025-3227) (Elsevier), 2004-12 , Vol. 213 , N. 1-4 , P. 291-321

DOI:

10.1016/j.margeo.2004.10.011

Subject(s)

Geology

Keyword(s)

Slope instability, Sensitivity, Sedimentation, Hydrate, Earthquake

Abstract

The Costa target areas exhibit the variability of slope instabilities needed to improve our understanding of sediment physical and mechanical properties in areas prone to sliding. That is why in this project, we have analysed the different slope failures events from different parts of the Costa target areas, which reflect diverse triggering mechanisms. The aim of the first part of this study was to identify the geotechnical response of the sediment to different external mechanisms (earthquake, rapid sedimentation and gas hydrate melting). We have focused on the relation between external mechanisms and the consequence change in the in-situ stress state and the physical, mechanical, and elastic properties of the sediment.

In the second part of the paper, the geotechnical properties of the sediment from different Costa areas are presented. Comparison between observed geotechnical properties and the theoretical behaviour was done in order to improve our understanding of the origin of the different observed slides.

How to cite this document:

Sultan Nabil, Cochonat Pierre, Canals M, Cattaneo Antonio, Dennielou Bernard, Haflidason H, Laberg J, Long D, Mienert J, Trincardi F, Urgeles R, Vorren T, Wilson C (2004). Triggering mechanisms of slope instability processes and sediment failures on continental margins: a geotechnical approach. Marine Geology, 213(1-4), 291-321. Publisher's official version : http://dx.doi.org/10.1016/j.margeo.2004.10.011 , Open Access version : http://archimer.ifremer.fr/doc/00000/700/