FN Archimer Export Format PT J TI Triggering mechanisms of slope instability processes and sediment failures on continental margins: a geotechnical approach BT AF 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 AS 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:; FF 1:PDG-DOP-DCB-GM-LES;2:PDG-DPS;3:;4:PDG-DOP-DCB-GM-LES;5:PDG-DOP-DCB-GM-LES;6:;7:;8:;9:;10:;11:;12:;13:; C1 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. C2 IFREMER, FRANCE UNIV BARCELONA, SPAIN IGM, ITALY UNIV BERGEN, NORWAY UNIV TROMSO, NORWAY BRITISH GEOL SURVEY, SCOTLAND SI BREST SIEGE SE PDG-DOP-DCB-GM-LES PDG-DPS IN WOS Ifremer jusqu'en 2018 copubli-europe IF 1.818 TC 255 UR https://archimer.ifremer.fr/doc/2004/publication-700.pdf LA English DT Article CR GMO1 MD 123 / GEOSCIENCES 1 MD 124 / GEOSCIENCES 2 BO Le SuroƮt Marion Dufresne DE ;Slope instability;Sensitivity;Sedimentation;Hydrate;Earthquake AB 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. PY 2004 PD DEC SO Marine Geology SN 0025-3227 PU Elsevier VL 213 IS 1-4 UT 000226172800012 BP 291 EP 321 DI 10.1016/j.margeo.2004.10.011 ID 700 ER EF