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Sea-level fluctuations control the distribution of highly liquefaction-prone layers on volcanic-carbonate slopes

dc.rights.licenseopenen_US
hal.structure.identifierGeo-Ocean [GEO-OCEAN]
dc.contributor.authorSULTAN, N.
hal.structure.identifierGeo-Ocean [GEO-OCEAN]
dc.contributor.authorJOUET, G.
hal.structure.identifierGeo-Ocean [GEO-OCEAN]
dc.contributor.authorRIBOULOT, V.
hal.structure.identifierGeo-Ocean [GEO-OCEAN]
dc.contributor.authorTERZARIOL, M.
hal.structure.identifierGeo-Ocean [GEO-OCEAN]
dc.contributor.authorGARZIGLIA, S.
hal.structure.identifierGeo-Ocean [GEO-OCEAN]
dc.contributor.authorCATTANEO, A.
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorGIRAUDEAU, Jacques
hal.structure.identifierGeo-Ocean [GEO-OCEAN]
dc.contributor.authorJORRY, S.J.
dc.date.accessioned2024-02-14T10:44:16Z
dc.date.available2024-02-14T10:44:16Z
dc.date.issued2023
dc.identifier.issn0091-7613en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/188125
dc.description.abstractEnUnderstanding and quantifying the hazards related to earthquake-induced submarine liquefaction and landslides are particularly significant offshore of tropical volcanic-carbonate islands, where carbonate production competes with volcanism to create highly contrasted lithological successions. To improve the detection of liquefaction-prone layers, we analyzed physical properties and mineralogy and performed 70 dynamic triaxial tests on 25 sediment cores offshore of the eastern side of Mayotte (Comoros archipelago in the western Indian Ocean) in an area that has experienced significant seismicity since 2018. We found that the main parameter controlling the liquefaction potential offshore of Mayotte is the presence of low-density layers with high calcite content accumulating along the slope during lowstands. This phasing with sea-level fluctuations implies a significant recurrent geohazard for tropical volcanic-carbonate islands worldwide. Furthermore, the relationship we found between the cyclic resistance of sediment and its density and magnetic susceptibility represents a time-effective approach for identifying the hazards related to earthquake-induced liquefaction.
dc.language.isoENen_US
dc.title.enSea-level fluctuations control the distribution of highly liquefaction-prone layers on volcanic-carbonate slopes
dc.typeArticle de revueen_US
dc.identifier.doi10.1130/G50785.1en_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Géophysique [physics.geo-ph]en_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Minéralogieen_US
bordeaux.journalGeologyen_US
bordeaux.page402-407en_US
bordeaux.volume51en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue4en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamPALEOen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-04074500
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geology&rft.date=2023&rft.volume=51&rft.issue=4&rft.spage=402-407&rft.epage=402-407&rft.eissn=0091-7613&rft.issn=0091-7613&rft.au=SULTAN,%20N.&JOUET,%20G.&RIBOULOT,%20V.&TERZARIOL,%20M.&GARZIGLIA,%20S.&rft.genre=article


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