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Video monitoring of sandbar-shoreline response to an offshore submerged structure at a microtidal beach

dc.rights.licenseopenen_US
hal.structure.identifierBureau de Recherches Géologiques et Minières [BRGM]
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBOUVIER, Clément
hal.structure.identifierBureau de Recherches Géologiques et Minières [BRGM]
dc.contributor.authorBALOUIN, Yann
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCASTELLE, Bruno
IDREF: 087596520
dc.date.accessioned2024-04-11T08:44:59Z
dc.date.available2024-04-11T08:44:59Z
dc.date.issued2017-07-20
dc.identifier.issn0169-555Xen_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/197517
dc.description.abstractEnIn early 2013, an 800-m long and 12-m wide submerged breakwater with its crest in 2-m depth was implemented at the wave-dominated barred beach of Sète, SE France, to fight against erosion and submersion hazards. Daily video images from April 2011 to April 2016 covering an alongshore distance of 3.5 km are used to analyse the response of both the sandbar(s) and the shoreline to the structure implementation. Results show that the breakwater had a profound impact on the nearshore system, both shoreward of the structure and well away from it alongshore. A progressive rotation and linearisation of the sandbar was observed shoreward of the submerged breakwater. This resulted in the splitting of the sandbar adjacent to the structure during a net offshore sandbar migration event driven by a severe storm in December 2013. The typical formation of a salient or tombolo was not observed. Instead, shoreline coupled to the sandbar geometry, which resulted in a slight seaward migration of the shoreline in front of the structure. Overall, this study highlights that the role of the sandbar is critical to shoreline response to the implementation of breakwaters on barred beaches.
dc.description.sponsorshipProcessus cross-shore et longshore combinés en morphodynamique littorale - ANR-14-ASTR-0004en_US
dc.language.isoENen_US
dc.subject.enNearshore bars
dc.subject.enshoreline change
dc.subject.ensubmerged structure
dc.subject.enshoreline-sandbars coupling
dc.title.enVideo monitoring of sandbar-shoreline response to an offshore submerged structure at a microtidal beach
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.geomorph.2017.07.017en_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terreen_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Géomorphologieen_US
bordeaux.journalGeomorphologyen_US
bordeaux.page297-305en_US
bordeaux.volume295en_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.sourcehal
hal.identifierhal-01579764
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=Geomorphology&rft.date=2017-07-20&rft.volume=295&rft.spage=297-305&rft.epage=297-305&rft.eissn=0169-555X&rft.issn=0169-555X&rft.au=BOUVIER,%20Cl%C3%A9ment&BALOUIN,%20Yann&CASTELLE,%20Bruno&rft.genre=article


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