Mid-Holocene Antarctic sea-ice increase driven by marine ice sheet retreat
dc.rights.license | open | en_US |
dc.contributor.author | ASHLEY, Kate | |
dc.contributor.author | MCKAY, Robert | |
dc.contributor.author | ETOURNEAU, Johan | |
dc.contributor.author | JIMENEZ-ESPEJO, Francisco | |
dc.contributor.author | CONDRON, Alan | |
dc.contributor.author | ALBOT, Anna | |
hal.structure.identifier | Environnements et Paléoenvironnements OCéaniques [EPOC] | |
dc.contributor.author | CROSTA, Xavier | |
dc.contributor.author | RIESSELMAN, Christina | |
dc.contributor.author | SEKI, Osamu | |
dc.contributor.author | MASSÉ, Guillaume | |
dc.contributor.author | GOLLEDGE, Nicholas | |
dc.contributor.author | GASSON, Edward | |
dc.contributor.author | LOWRY, Daniel | |
dc.contributor.author | BARRAND, Nicholas | |
dc.contributor.author | JOHNSON, Katelyn | |
dc.contributor.author | BERTLER, Nancy | |
dc.contributor.author | ESCUTIA, Carlota | |
dc.contributor.author | DUNBAR, Robert | |
dc.contributor.author | BENDLE, James | |
dc.date.accessioned | 2024-03-07T08:46:24Z | |
dc.date.available | 2024-03-07T08:46:24Z | |
dc.date.issued | 2021-01-05 | |
dc.identifier.issn | 1814-9324 | en_US |
dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/188612 | |
dc.description.abstractEn | Over 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.iso | EN | en_US |
dc.rights | Attribution 3.0 United States | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/us/ | * |
dc.title.en | Mid-Holocene Antarctic sea-ice increase driven by marine ice sheet retreat | |
dc.type | Article de revue | en_US |
dc.identifier.doi | 10.5194/cp-17-1-2021 | en_US |
dc.subject.hal | Planète et Univers [physics]/Sciences de la Terre/Climatologie | en_US |
dc.subject.hal | Planète et Univers [physics]/Sciences de la Terre/Océanographie | en_US |
dc.subject.hal | Planète et Univers [physics]/Océan, Atmosphère | en_US |
bordeaux.journal | Climate of the Past | en_US |
bordeaux.page | 1 - 19 | en_US |
bordeaux.volume | 17 | en_US |
bordeaux.hal.laboratories | EPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805 | en_US |
bordeaux.institution | Université de Bordeaux | en_US |
bordeaux.institution | CNRS | en_US |
bordeaux.team | PALEO | en_US |
bordeaux.peerReviewed | oui | en_US |
bordeaux.inpress | non | en_US |
bordeaux.import.source | hal | |
hal.identifier | hal-03102309 | |
hal.version | 1 | |
hal.popular | non | en_US |
hal.audience | Internationale | en_US |
hal.export | false | |
workflow.import.source | hal | |
dc.rights.cc | CC BY | en_US |
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