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Holocene paleoceanography of the Bay of Biscay: Evidence for west-east linkages in the North Atlantic based on dinocyst data

dc.rights.licenseopenen_US
dc.contributor.authorZUMAQUE, Jena
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorEYNAUD, Frederique
IDREF: 144113570
dc.contributor.authorDE VERNAL, Anne
dc.date.accessioned2024-10-07T12:45:21Z
dc.date.available2024-10-07T12:45:21Z
dc.date.issued2017-02-01
dc.identifier.issn0031-0182en_US
dc.identifier.urioai:crossref.org:10.1016/j.palaeo.2016.12.031
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/202294
dc.description.abstractEnPaleoceanographical changes during the Holocene were reconstructed from the study of core MD95-2002 situated in the northern Bay of Biscay, which is marked by the direct influence of the northeastern return branch of the North Atlantic Drift. Palynological data, sea-surface condition estimates based on dinocyst assemblages and stable isotope measurements in planktic and benthic foraminifera reveal a strong influence of freshwater/meltwaters from both the proximal European sources and the more distal Laurentide Ice Sheet, which experienced delayed deglaciation. The data also indicate the setting of a climate optimum between 7 and 5.5 ka followed by a cooling trend, which is consistent with insolation changes and other regional records of climate changes. Superimposed on the long term trends, the reconstructions of sea-surface conditions evidence large amplitude changes at centennial to millennial time-scales, with seven episodes of cooling and low salinity since 11 ka that generally match episodes of dense sea-ice cover in the Labrador Sea. The west to east transfer of the sea-ice and/or meltwater signal across the North Atlantic evidenced from core MD95-2002 points to strong linkages between western and eastern North Atlantic, probably in relation to the North Atlantic Oscillation (NAO) mode of variability.
dc.language.isoENen_US
dc.sourcecrossref
dc.title.enHolocene paleoceanography of the Bay of Biscay: Evidence for west-east linkages in the North Atlantic based on dinocyst data
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.palaeo.2016.12.031en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalPalaeogeography, Palaeoclimatology, Palaeoecologyen_US
bordeaux.page403-413en_US
bordeaux.volume468en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamPALEOen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.identifierhal-04724080
hal.version1
hal.date.transferred2024-10-07T12:45:23Z
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exporttrue
workflow.import.sourcedissemin
dc.rights.ccPas de Licence CCen_US
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