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First records of winter sea ice concentration in the southwest Pacific sector of the Southern Ocean

dc.rights.licenseopenen_US
hal.structure.identifierDepartment of Biological Sciences [North Ryde]
dc.contributor.authorFERRY, Alexander
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCROSTA, Xavier
hal.structure.identifierUniversity of Tasmania [Hobart, Australia] [UTAS]
dc.contributor.authorQUILTY, Patrick
hal.structure.identifierAustralian Nuclear Science and Technology Organisation [Australie] [ANSTO]
dc.contributor.authorFINK, David
hal.structure.identifierUniversity of Melbourne
dc.contributor.authorHOWARD, William
hal.structure.identifierDepartment of Biological Sciences [North Ryde]
dc.contributor.authorARMAND, Leanne
dc.date.accessioned2024-05-15T13:13:16Z
dc.date.available2024-05-15T13:13:16Z
dc.date.issued2015
dc.identifier.issn0883-8305en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/199887
dc.description.abstractEnWe use a Generalized Additive Model (GAM) to provide the first winter sea ice concentration record from two cores located within the southwest Pacific sector of the Southern Ocean. To compliment the application of GAM, a time series analysis on satellite records of sea ice concentration data was used to extend the standard 13.25 year time series used for paleoceanography. After comparing GAM sea ice estimates with previously published paleo sea ice data we then focus on a new paleo winter sea ice record for marine sediment core E27-23 (59°37.1'S, 155°14.3'E), allowing us to provide a more comprehensive view of winter sea ice dynamics for the southwest Pacific Ocean. The paleo winter sea ice concentration estimates provide the first suggestion that winter sea ice within the southwestern Pacific might have expanded during the Antarctic Cold Reversal. Throughout the Holocene, core E27-23 documents millennial scale variability in paleo winter sea ice coverage within the southwest Pacific. Holocene winter sea ice expansion may have resulted from the Laurentide Ice Sheet deglaciation, increased intensity of the westerly winds, as well as a northern migration of the Subtropical and/or Sub-Antarctic Fronts. Brief consideration is given to the development of a paleo summer sea ice proxy. We conclude that there is no evidence that summer sea ice ever existed at core sites SO136-111 and E27-23 over the last 220 and 52,000 years, respectively.
dc.language.isoENen_US
dc.title.enFirst records of winter sea ice concentration in the southwest Pacific sector of the Southern Ocean
dc.typeArticle de revueen_US
dc.identifier.doi10.1002/2014PA002764en_US
dc.subject.halPlanète et Univers [physics]/Océan, Atmosphèreen_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Océanographieen_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Climatologieen_US
bordeaux.journalPaleoceanographyen_US
bordeaux.page1525-1539en_US
bordeaux.volume30en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue11en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamPALEOen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-02105554
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
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=Paleoceanography&rft.date=2015&rft.volume=30&rft.issue=11&rft.spage=1525-1539&rft.epage=1525-1539&rft.eissn=0883-8305&rft.issn=0883-8305&rft.au=FERRY,%20Alexander&CROSTA,%20Xavier&QUILTY,%20Patrick&FINK,%20David&HOWARD,%20William&rft.genre=article


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