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Contrasting vegetation response during Heinrich events 4, 5 and 6 in Western Europe

hal.structure.identifierArchéosciences Bordeaux
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorFOURCADE, Tiffanie
hal.structure.identifierÉcole Pratique des Hautes Études [EPHE]
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorSÁNCHEZ GOÑI, María
hal.structure.identifierLaboratoire Chrono-environnement (UMR 6249) [LCE]
hal.structure.identifierInstitut de recherche sur les forêts
dc.contributor.authorLESVEN, Jonathan
hal.structure.identifierIRAMAT-Centre de recherche en physique appliquée à l’archéologie [IRAMAT-CRP2A]
hal.structure.identifierArchéosciences Bordeaux
dc.contributor.authorLAHAYE, Christelle
hal.structure.identifierLaboratoire de Mathématiques Jean Leray [LMJL]
dc.contributor.authorPHILIPPE, Anne
dc.date.conference2023-09-13
dc.description.abstractEnDeep-sea and terrestrial records allow to document the amplitude, timing and duration of the oceanic and vegetation responses to orbital and millennial-scale changes, in particular during North Atlantic cooling events (Heinrich events, HEs) in Western Europe during the Last Glacial Period (~115- 27 ka).We propose a multiproxy study based on two deep-sea cores retrieved in the Bay of Biscay (MD04-2845) and the Gulf of Lion (MD99-2343) to reconstruct vegetation and climatic changes in southwestern and southeastern France during Heinrich stadials 4, 5 and 6. These records are well chronologically constrained by numerical dating (new IRSL ages for the MD04-2845 deep-sea core) and new age-depth models, based on Bayesian statistics and stratigraphic constrains using ChronoModel software and ArchaeoPhases R-package. The comparison of both deep-sea cores with other terrestrial and marine records from NE Atlantic and NW Mediterranean regions show different magnitudes in the semi-desert expansions following Heinrich Stadials (HS, 4, 5 and 6) in Western Europe. Although in southwestern France, the development of the semi-desert is more pronounced during HS6 compared to HS 4 and 5, in the southeast, this stadial is marked by forest development. These contrasted responses during these events appear to be the result of different intensities of the thermohaline circulation and local oceanic processes associated with the instability of the Laurentian ice sheet.
dc.language.isoen
dc.title.enContrasting vegetation response during Heinrich events 4, 5 and 6 in Western Europe
dc.typeAutre communication scientifique (congrès sans actes - poster - séminaire...)
dc.subject.halSciences de l'Homme et Société/Etudes de l'environnement
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Climatologie
dc.subject.halSciences de l'Homme et Société/Archéologie et Préhistoire
bordeaux.conference.titleJournée d’Echanges ScienTifiques EPOC
bordeaux.countryFR
bordeaux.conference.cityTalence
bordeaux.peerReviewedoui
hal.identifierhal-04235065
hal.version1
hal.proceedingsnon
hal.conference.organizerEPOC
hal.conference.end2023-09-14
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04235065v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=FOURCADE,%20Tiffanie&S%C3%81NCHEZ%20GO%C3%91I,%20Mar%C3%ADa&LESVEN,%20Jonathan&LAHAYE,%20Christelle&PHILIPPE,%20Anne&rft.genre=conference


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