Deep sea in situ excess pore pressure and sediment deformation off NW Sumatra and its relation with the December 26, 2004 Great Sumatra-Andaman Earthquake

Type Article
Date 2009-06
Language English
Author(s) Sultan Nabil1, Cattaneo AntonioORCID1, Sibuet Jean-Claude1, Schneider Jean-Luc2
Affiliation(s) 1 : IFREMER, Brest GM, F-29280 Plouzane, France.
2 : Univ Bordeaux 1, CNRS, OASU, UMR EPOC 5805, F-33405 Talence, France.
Source International Journal of Earth Sciences (1437-3254) (Springer), 2009-06 , Vol. 98 , N. 4 , P. 823-837
DOI 10.1007/s00531-008-0334-z
WOS© Times Cited 18
Keyword(s) Tsunami, Sumatra, Slope failure, Pore pressure, Earthquake
Abstract The swath bathymetric data acquired during the "Sumatra Aftershocks" cruise from the Sunda trench in the Indian Ocean to the north of the Sumatra Island imaged several scars and deposits. In situ pore pressure measurements using the Ifremer piezometer and coring demonstrate that high excess pore pressure and sediment deformation was generated by a recent event in the scar of the slope failure zone identified by J.T. Henstock and co-authors. This excess pore pressure is localized in the upper sedimentary layers and is not related to an interplate subduction process. Numerical simulations of the hydrological system that take into account the hydro-mechanical properties of the upper sediment layer show that the excess pore pressure and sediment deformations could be generated at the time of the December 26, 2004 Great Sumatra Earthquake.
Full Text
File Pages Size Access
publication-6740.pdf 10 749 KB Open access
Top of the page

How to cite 

Sultan Nabil, Cattaneo Antonio, Sibuet Jean-Claude, Schneider Jean-Luc (2009). Deep sea in situ excess pore pressure and sediment deformation off NW Sumatra and its relation with the December 26, 2004 Great Sumatra-Andaman Earthquake. International Journal of Earth Sciences, 98(4), 823-837. Publisher's official version : https://doi.org/10.1007/s00531-008-0334-z , Open Access version : https://archimer.ifremer.fr/doc/00000/6740/