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The first estimation of Fleuve Manche palaeoriver discharge during the last deglaciation: Evidence for Fennoscandian ice sheet meltwater flow in the English Channel ca 20–18 ka ago

dc.rights.licenseopenen_US
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorTOUCANNE, Samuel
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorZARAGOSI, Sebastien
IDREF: 189039159
dc.contributor.authorBOURILLET, Jean-François
dc.contributor.authorJEAN-FRANCOIS, Bourillet
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorMARIEU, Vincent
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCREMER, Michel
dc.contributor.authorKAGEYAMA, Masa
dc.contributor.authorBRIGITTE, Van Vliet-Lanoe
dc.contributor.authorVAN VLIET-LANOË, Brigitte
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorEYNAUD, Frederique
IDREF: 144113570
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorTURON, Jean Louis
dc.contributor.authorGIBBARD, Philip L.
dc.date.accessioned2024-10-25T11:29:27Z
dc.date.available2024-10-25T11:29:27Z
dc.date.issued2010-02-01
dc.identifier.issn0012-821Xen_US
dc.identifier.urihttp://hal-insu.archives-ouvertes.fr/insu-00467035/en/
dc.identifier.urioai:crossref.org:10.1016/j.epsl.2009.12.050
dc.identifier.urioadoi:https://hal-insu.archives-ouvertes.fr/insu-00467035/file/EPSL-Toucanne.pdf
dc.identifier.uriftccsdartic:oai:hal-insu.archives-ouvertes.fr:insu-00467035
dc.identifier.urioai:researchgate.net:43106953
dc.identifier.urioadoi:https://hal-insu.archives-ouvertes.fr/insu-00467035/document
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/202810
dc.description.abstractEnThe Fleuve Manche (English Channel) palaeoriver represents the largest river system that drained the European continent during Pleistocene lowstands, particularly during the Elsterian (Marine Isotope Stage 12) and Saalian Drenthe (MIS 6) glaciations when extensive ice advances into the North Sea area forced the central European rivers to flow southwards to the Bay of Biscay (NE Atlantic). Numerous long piston cores and high-resolution acoustic data from the northern Bay of Biscay have been correlated using a well-constrained chronostratigraphical framework, and for the first time allow the estimation of the discharge of the Fleuve Manche palaeoriver at the end of the last glacial period (i.e. Weichselian). Our results, discussed in the light of relationships between river loads and drainage area characteristics, strongly suggest that the Bay of Biscay collected sediment-laden meltwater from the Northern European lowlands and the southern part of the Fennoscandian ice sheet at the end of the last glacial period and particularly during the paroxysmal phase of the European deglaciation ca 20–18 ka ago. This demonstrates that the Fleuve Manche drainage area at that time was equivalent to those dating from the major Elsterian and Saalian Drenthe glaciations. Based on our data, we propose a revision of the palaeogeographical and palaeoglaciological evolution of the North Sea area while showing that the British and Fennoscandian ice sheets entered the North Sea basin until ca 18 ka initiating isostatic adjustment of the basin. This allowed the North Sea fluvial system to flow southwards through the Dover Strait. Finally, we discuss the Fleuve Manche freshwater discharge during the maximum European ice sheet retreat ca 18 ka. The estimated discharge at this time appears important and sufficiently sustained to possibly contribute to the profound destabilisation of the thermohaline circulation recognised in the North Atlantic from ca 18 to 16 ka.
dc.language.isoENen_US
dc.sourcecrossref
dc.sourceoadoi_repo
dc.sourcebase
dc.sourceresearchgate
dc.title.enThe first estimation of Fleuve Manche palaeoriver discharge during the last deglaciation: Evidence for Fennoscandian ice sheet meltwater flow in the English Channel ca 20–18 ka ago
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.epsl.2009.12.050en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalEarth and Planetary Science Lettersen_US
bordeaux.page459-473en_US
bordeaux.volume290en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue3-4en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamGEOLSEDen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcedissemin
dc.rights.ccPas de Licence CCen_US
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