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Submarine slide initiation and evolution offshore Pointe Odden, Gabon — Analysis from annual bathymetric data (2004–2009)

dc.rights.licenseopenen_US
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBISCARA, Laurie
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorHANQUIEZ, Vincent
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorLEYNAUD, Delphine
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorMARIEU, Vincent
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorMULDER, Thierry
dc.contributor.authorGALLISSAIRES, J.-M.
dc.contributor.authorCRESPIN, J.-P.
dc.contributor.authorBRACCINI, E.
dc.contributor.authorGARLAN, T.
dc.date.accessioned2024-11-13T10:43:32Z
dc.date.available2024-11-13T10:43:32Z
dc.date.issued2012-03-01
dc.identifier.issn0025-3227en_US
dc.identifier.urihttps://www.researchgate.net/publication/256807171_Submarine_slide_initiation_and_evolution_offshore_Pointe_Odden_Gabon_-_Analysis_from_annual_bathymetric_data_2004-2009
dc.identifier.urioai:researchgate.net:256807171
dc.identifier.urioai:crossref.org:10.1016/j.margeo.2011.11.008
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/203227
dc.description.abstractEnTime serial bathymetric data acquired between 2004 and 2009 are used to evaluate the morphological evolution of the coastal area offshore Pointe Odden, located on the Mandji Island (Gabon). Data analysis highlights the alternation between fast sedimentation periods at shallow water depth related to intense longshore drift and catastrophic erosional events. Because of sediment overloading and slope oversteepening, small-scale instabilities are generated (successive slide scars, channel formation and growth by retrogressive erosion). However, when critical stability conditions are reached, large failures occur (2005 submarine slide). Geotechnical measurements and sedimentological analyses on the study area suggest that flow liquefaction would be the triggering mechanism of the 2005 event. Moreover, our analysis shows that the associated slide scar is rapidly filled by compensation and that failure morphology could disappear from the seafloor in about 15–20 years.
dc.language.isoENen_US
dc.sourceresearchgate
dc.sourcecrossref
dc.title.enSubmarine slide initiation and evolution offshore Pointe Odden, Gabon — Analysis from annual bathymetric data (2004–2009)
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.margeo.2011.11.008en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalMarine Geologyen_US
bordeaux.page43-50en_US
bordeaux.volume299-302en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamMETHYSen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.identifierhal-04779951
hal.version1
hal.date.transferred2024-11-13T10:43:34Z
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exporttrue
workflow.import.sourcedissemin
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Marine%20Geology&rft.date=2012-03-01&rft.volume=299-302&rft.spage=43-50&rft.epage=43-50&rft.eissn=0025-3227&rft.issn=0025-3227&rft.au=BISCARA,%20Laurie&HANQUIEZ,%20Vincent&LEYNAUD,%20Delphine&MARIEU,%20Vincent&MULDER,%20Thierry&rft.genre=article


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