Imprint of seasonality changes on fluvio-glacial dynamics across Heinrich Stadial 1 (NE Atlantic Ocean)
| dc.rights.license | open | en_US |
| hal.structure.identifier | Laboratoire Géosciences Océan [LGO] | |
| dc.contributor.author | FERSI, Wiem | |
| hal.structure.identifier | Laboratoire Géosciences Océan [LGO] | |
| dc.contributor.author | PENAUD, Aurelie | |
| hal.structure.identifier | Institut de Ciencia i Tecnologia Ambientals [ICTA] | |
| dc.contributor.author | WARY, Melanie | |
| dc.contributor.author | TOUCANNE, Samuel | |
| hal.structure.identifier | Processus et interactions de fine échelle océanique [PROTEO] | |
| dc.contributor.author | WAELBROECK, Claire | |
| hal.structure.identifier | Environnements et Paléoenvironnements OCéaniques [EPOC] | |
| dc.contributor.author | ROSSIGNOL, Linda | |
| hal.structure.identifier | Environnements et Paléoenvironnements OCéaniques [EPOC] | |
| dc.contributor.author | EYNAUD, Frederique | |
| dc.date.accessioned | 2024-02-07T14:57:21Z | |
| dc.date.available | 2024-02-07T14:57:21Z | |
| dc.date.issued | 2021 | |
| dc.identifier.issn | 0921-8181 | en_US |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/187987 | |
| dc.description.abstractEn | The northern Bay of Biscay has previously proven its great potential for recording the ‘Fleuve Manche’ paleoriver (i.e., the largest Pleistocene river in Europe) fluvio-glacial activity. In this study, new dinoflagellate cyst (dinocyst) analyses have been carried out at sub-centennial resolution in core MD13–3438 to reconstruct the deglacial history of the ‘Fleuve Manche’ paleoriver runoff coupled with European Ice Sheets (EIS) fluctuations across Heinrich Stadial 1 (HS1: 18.2–14.6 ka BP), a key extreme climatic event of the last glacial period. Prior to Heinrich Event (HE) 1 (16.7–14.6 ka BP), the onset of HS1 (18.2–16.7 ka BP) appears here marked by enhanced ‘Fleuve Manche’ paleoriver runoff, materialized by laminated deposits. Our work suggests a novel sub-centennial scale subdivision of the early HS1 (laminated) interval into 5 sub-phases when episodes of substantial fluvio-glacial delivery concomitant with warm summers alternate with episodes of moderate runoff associated with extended cold winters. We argue that multidecadal seasonal changes played a key role in the hydrological regime of western Europe during this HS1 interval, with the retreat of the southern limb of the EIS, and associated influx of meltwater and fluvio-glacial delivery, which were strongly influenced by those multidecadal changes in seasonality. Interestingly, our paleoclimatic record not only evidences the crucial role of seasonality in controlling climate and hydrological variations during HS1 but also shows a remarkable echo with reconstructions from the western Mediterranean Basin, highlighting common climate forcings at regional scale during the last deglaciation. | |
| dc.description.sponsorship | Impact de Décharges d'Eau douce provenant de la GLace continentale sur le Climat Européen et méditerranéen - ANR-05-BLAN-0310 | en_US |
| dc.description.sponsorship | Interdisciplinary Graduate School for the Blue planet - ANR-17-EURE-0015 | en_US |
| dc.language.iso | EN | en_US |
| dc.subject.en | Heinrich Stadial 1 | |
| dc.subject.en | Dinoflagellate cysts | |
| dc.subject.en | northern Bay of Biscay | |
| dc.subject.en | ‘Fleuve Manche’ paleoriver | |
| dc.subject.en | European Ice Sheets | |
| dc.title.en | Imprint of seasonality changes on fluvio-glacial dynamics across Heinrich Stadial 1 (NE Atlantic Ocean) | |
| dc.title.alternative | Glob Planet Change | en_US |
| dc.type | Article de revue | en_US |
| dc.identifier.doi | 10.1016/j.gloplacha.2021.103552 | en_US |
| dc.subject.hal | Sciences de l'environnement/Milieux et Changements globaux | en_US |
| dc.subject.hal | Planète et Univers [physics]/Sciences de la Terre/Océanographie | en_US |
| dc.description.sponsorshipEurope | Elucidating the Causes and Effects of Atlantic Circulation Changes through Model-Data Integration | en_US |
| bordeaux.journal | Global and Planetary Change | en_US |
| bordeaux.page | 103552 | en_US |
| bordeaux.volume | 204 | 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-03455758 | |
| hal.version | 1 | |
| hal.popular | non | en_US |
| hal.audience | Internationale | en_US |
| hal.export | false | |
| workflow.import.source | hal | |
| dc.rights.cc | Pas de Licence CC | en_US |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Global%20and%20Planetary%20Change&rft.date=2021&rft.volume=204&rft.spage=103552&rft.epage=103552&rft.eissn=0921-8181&rft.issn=0921-8181&rft.au=FERSI,%20Wiem&PENAUD,%20Aurelie&WARY,%20Melanie&TOUCANNE,%20Samuel&WAELBROECK,%20Claire&rft.genre=article |
