Afficher la notice abrégée

Mid-Holocene Antarctic sea-ice increase driven by marine ice sheet retreat

dc.rights.licenseopenen_US
dc.contributor.authorASHLEY, Kate
dc.contributor.authorMCKAY, Robert
dc.contributor.authorETOURNEAU, Johan
dc.contributor.authorJIMENEZ-ESPEJO, Francisco
dc.contributor.authorCONDRON, Alan
dc.contributor.authorALBOT, Anna
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCROSTA, Xavier
dc.contributor.authorRIESSELMAN, Christina
dc.contributor.authorSEKI, Osamu
dc.contributor.authorMASSÉ, Guillaume
dc.contributor.authorGOLLEDGE, Nicholas
dc.contributor.authorGASSON, Edward
dc.contributor.authorLOWRY, Daniel
dc.contributor.authorBARRAND, Nicholas
dc.contributor.authorJOHNSON, Katelyn
dc.contributor.authorBERTLER, Nancy
dc.contributor.authorESCUTIA, Carlota
dc.contributor.authorDUNBAR, Robert
dc.contributor.authorBENDLE, James
dc.date.accessioned2024-03-07T08:46:24Z
dc.date.available2024-03-07T08:46:24Z
dc.date.issued2021-01-05
dc.identifier.issn1814-9324en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/188612
dc.description.abstractEnOver recent decades Antarctic sea-ice extent has increased, alongside widespread ice shelf thinning and freshening of waters along the Antarctic margin. In contrast, Earth system models generally simulate a decrease in sea ice. Circulation of water masses beneath large-cavity ice shelves is not included in current Earth System models and may be a driver of this phenomena. We examine a Holocene sediment core off East Antarctica that records the Neoglacial transition, the last major baseline shift of Antarctic sea ice, and part of a late-Holocene global cooling trend. We provide a multiproxy record of Holocene glacial meltwater input, sediment transport, and sea-ice variability. Our record, supported by high-resolution ocean modelling, shows that a rapid Antarctic sea-ice increase during the mid-Holocene (∼ 4.5 ka) occurred against a backdrop of increasing glacial meltwater input and gradual climate warming. We suggest that mid-Holocene ice shelf cavity expansion led to cooling of surface waters and sea-ice growth that slowed basal ice shelf melting. Incorporating this feedback mechanism into global climate models will be important for future projections of Antarctic changes.
dc.language.isoENen_US
dc.rightsAttribution 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/us/*
dc.title.enMid-Holocene Antarctic sea-ice increase driven by marine ice sheet retreat
dc.typeArticle de revueen_US
dc.identifier.doi10.5194/cp-17-1-2021en_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Climatologieen_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Océanographieen_US
dc.subject.halPlanète et Univers [physics]/Océan, Atmosphèreen_US
bordeaux.journalClimate of the Pasten_US
bordeaux.page1 - 19en_US
bordeaux.volume17en_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.sourcehal
hal.identifierhal-03102309
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccCC BYen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Climate%20of%20the%20Past&rft.date=2021-01-05&rft.volume=17&rft.spage=1%20-%2019&rft.epage=1%20-%2019&rft.eissn=1814-9324&rft.issn=1814-9324&rft.au=ASHLEY,%20Kate&MCKAY,%20Robert&ETOURNEAU,%20Johan&JIMENEZ-ESPEJO,%20Francisco&CONDRON,%20Alan&rft.genre=article


Fichier(s) constituant ce document

Thumbnail
Nom:
Ashley_CP2020.pdf
Taille:
4.838Mo
Format:
PDF
Voir/Ouvrir
Thumbnail
Nom:
license_rdf
Taille:
914octets
Format:
application/rdf+xml
Voir/Ouvrir

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée