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Hurricane Irma: an unprecedented event over the last 3700 years? Geomorphological changes and sedimentological record in Codrington Lagoon, Barbuda

dc.rights.licenseopenen_US
hal.structure.identifierEnvironnements, Dynamiques et Territoires de Montagne [EDYTEM]
hal.structure.identifierLIttoral ENvironnement et Sociétés [LIENSs]
dc.contributor.authorBIGUENET, Maude
hal.structure.identifierLIttoral ENvironnement et Sociétés [LIENSs]
dc.contributor.authorCHAUMILLON, Eric
hal.structure.identifierEnvironnements, Dynamiques et Territoires de Montagne [EDYTEM]
dc.contributor.authorSABATIER, Pierre
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBASTIEN, Antoine
hal.structure.identifierLIttoral ENvironnement et Sociétés [LIENSs]
dc.contributor.authorGEBA, Emeline
hal.structure.identifierEnvironnements, Dynamiques et Territoires de Montagne [EDYTEM]
dc.contributor.authorARNAUD, Fabien
hal.structure.identifierLIttoral ENvironnement et Sociétés [LIENSs]
dc.contributor.authorCOULOMBIER, Thibault
hal.structure.identifierInstitut de Physique du Globe de Paris [IPGP (UMR_7154)]
dc.contributor.authorFEUILLET, Nathalie
dc.date.accessioned2024-03-11T13:41:16Z
dc.date.available2024-03-11T13:41:16Z
dc.date.issued2023-12-06
dc.identifier.issn1561-8633en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/188681
dc.description.abstractEnAbstract. Low-lying coasts and small islands, such as in the Lesser Antilles, are particularly vulnerable to hurricane-induced marine floods. In September 2017, category 5 Hurricane Irma, with winds up to 360 km h−1, hit the northern Caribbean islands and caused the destruction of 95 % of the structures on Barbuda Island. We investigated the geomorphological impacts and the sedimentological record related to the storm surge of this hurricane in Barbuda's Codrington Lagoon. Following Hurricane Irma, two wide inlets developed across the Codrington sandy barrier. One of these inlets was enlarged and was still open 4 years later. From available data, it seems that this barrier remained continuous for the last 250 years before Hurricane Irma. At a longer timescale, very high-resolution seismic exploration combined with sediment cores sampled in Codrington Lagoon were used to investigate Irma deposits and environmental changes for the last 3700 years. The evolution from a low-energy small and shallow lagoon to the modern wide and high-energy lagoon recorded by the lagoon sediment fill was related to both long-term sea level rise and subsidence. The top of the lagoon fill consists of a thick and extensive sand sheet recording an abrupt increase in energy. Given its location at the top of the cores and its very recent age, supported by short-lived radionuclide data, together with large inlets opening and barrier erosion after Irma that imply a large sand supply to the lagoon, this sand sheet was attributed to Hurricane Irma. From our cores, it appears that this deposit is unique over more than 3700 years. Both the opening of a new inlet and the thick upper sand sheet support the exceptional character of Irma at the scale of centuries to millennia. Our study reinforces the idea that Hurricane Irma was exceptional in terms of intensity and may be associated with global warming.
dc.language.isoENen_US
dc.title.enHurricane Irma: an unprecedented event over the last 3700 years? Geomorphological changes and sedimentological record in Codrington Lagoon, Barbuda
dc.typeArticle de revueen_US
dc.identifier.doi10.5194/nhess-23-3761-2023en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalNatural Hazards and Earth System Sciencesen_US
bordeaux.page3761-3788en_US
bordeaux.volume23en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue12en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-04327363
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccCC BYen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Natural%20Hazards%20and%20Earth%20System%20Sciences&rft.date=2023-12-06&rft.volume=23&rft.issue=12&rft.spage=3761-3788&rft.epage=3761-3788&rft.eissn=1561-8633&rft.issn=1561-8633&rft.au=BIGUENET,%20Maude&CHAUMILLON,%20Eric&SABATIER,%20Pierre&BASTIEN,%20Antoine&GEBA,%20Emeline&rft.genre=article


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