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Sedimentary response to sea ice and atmospheric variability over the instrumental period off Adélie Land, East Antarctica

hal.structure.identifierLaboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques [LOCEAN]
hal.structure.identifierTakuvik Joint International Laboratory ULAVAL-CNRS
hal.structure.identifierQuébec-Océan
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCAMPAGNE, Philippine
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCROSTA, Xavier
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorSCHMIDT, Sabine
IDREF: 131836129
hal.structure.identifierVariabilité de l'Océan et de la Glace de mer [VOG]
dc.contributor.authorHOUSSAIS, Marie-Noëlle
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorTHER, Olivier
hal.structure.identifierLaboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques [LOCEAN]
hal.structure.identifierTakuvik Joint International Laboratory ULAVAL-CNRS
dc.contributor.authorMASSÉ, Guillaume
dc.date.accessioned2024-04-23T13:31:24Z
dc.date.available2024-04-23T13:31:24Z
dc.date.issued2016-07-25
dc.identifier.issn1726-4170
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/199285
dc.description.abstractEnDiatoms account for a large proportion of primary productivity in Antarctic coastal and continental shelf zones. Diatoms, which have been used for a long time to infer past sea surface conditions in the Southern Ocean, have recently been associated with diatom-specific biomark-ers (highly branched isoprenoids, HBI). Our study is one of the few sedimentary research projects on diatom ecology and associated biomarkers in the Antarctic seasonal sea ice zone. To date, the Adélie Land region has received little attention, despite evidence for the presence of high accumulation of laminated sediment, allowing for finer climate reconstructions and sedimentary process studies. Here we provide a sequence of seasonally to annually laminated diatomaceous sediment from a 72.5 cm interface core retrieved on the continental shelf off Adélie Land, covering the 1970–2010 CE period. Investigations through statistical analyses of diatom communities, diatom-specific biomarkers and major element abundances document the relationships between these proxies at an unprecedented resolution. Additionally, comparison of sedimentary records to meteorological data monitored by automatic weather station and satellite derived sea ice concentrations help to refine the relationships between our proxies and environmental conditions over the last decades. Our results suggest a coupled interaction of the atmospheric and sea surface variability on sea ice seasonality, which acts as the proximal forcing of siliceous productivity at that scale.
dc.description.sponsorshipBanquise et Variabilité Climatique Passée - ANR-08-CEXC-0012
dc.language.isoen
dc.publisherEuropean Geosciences Union
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.title.enSedimentary response to sea ice and atmospheric variability over the instrumental period off Adélie Land, East Antarctica
dc.typeArticle de revueen_US
dc.identifier.doi10.5194/bg-13-4205-2016
dc.subject.halPlanète et Univers [physics]/Océan, Atmosphère
dc.description.sponsorshipEuropeNovel Lipid Biomarkers from Polar Ice: Climatic and Ecological Applications.
dc.description.sponsorshipEuropeClimate change - Learning from the past climate
bordeaux.journalBiogeosciencesen_US
bordeaux.page4205-4218
bordeaux.volume13
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue14
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
bordeaux.import.sourcehal
hal.identifierhal-01371491
hal.version1
hal.popularnon
hal.audienceInternationale
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=Biogeosciences&rft.date=2016-07-25&rft.volume=13&rft.issue=14&rft.spage=4205-4218&rft.epage=4205-4218&rft.eissn=1726-4170&rft.issn=1726-4170&rft.au=CAMPAGNE,%20Philippine&CROSTA,%20Xavier&SCHMIDT,%20Sabine&HOUSSAIS,%20Marie-No%C3%ABlle&THER,%20Olivier&rft.genre=article


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