seanoe:77667 TOUCANNE Samuel IFREMER, Unité de Recherche Géosciences Marines, Laboratoire Géophysique et enregistrement Sédimentaire, CS10070, F-29280 Plouzané, France 2021-05-12 ISO 19115:2003/19139 1.0 Sedimentological and geochemical records of the North Atlantic Glacial Eastern Boundary Current, 50-15 ka BP 2020-12 2021-05-12 Toucanne Samuel, Soulet Guillaume, Vazquez Riveiros Natalia, Boswell Steven, Dennielou Bernard, Waelbroeck Claire, Bayon Germain, Mojtahid Meryem, Bosq Mathieu, Sabine Marjolaine, Zaragosi Sébastien, Bourillet Jean-Francois, Mercier Herle (2020). Sedimentological and geochemical records of the North Atlantic Glacial Eastern Boundary Current, 50-15 ka BP. SEANOE. https://doi.org/10.17882/77667 In addition to properly cite this dataset, it would be appreciated that the following work(s) be cited too, when using this dataset in a publication : Toucanne Samuel, Soulet Guillaume, Vazquez Riveiros Natalia, Boswell Steven M., Dennielou Bernard, Waelbroeck Claire, Bayon Germain, Mojtahid Meryem, Bosq Mathieu, Sabine Marjolaine, Zaragosi Sébastien, Bourillet Jean-Francois, Mercier Herle (2021). The North Atlantic Glacial Eastern Boundary Current as a key driver for ice‐sheet – AMOC interactions and climate instability. Paleoceanography And Paleoclimatology, 36(3), e2020PA004068 (23p.). https://doi.org/10.1029/2020PA004068 The upper branch of the Atlantic Meridional Overturning Circulation (AMOC) plays a critical role in ocean circulation and climate change, yet its variability during the last glacial period is poorly documented. Here, we investigate the northward-flowing Glacial Eastern Boundary Current (GEBC) in the North Atlantic, known today as the European Slope Current, and representing the easternmost portion of the upper branch of the AMOC. Based on flow speed (sortable silt, XRF) and radiogenic/stable isotopic records, we show that Dansgaard-Oeschger (D/O) interstadials (stadials) correspond to a faster (weaker) GEBC during the ~50-15 ka period. This, by analogy to present-day conditions, suggests enhanced (reduced) strength of the subpolar gyre and, by extension, of northern-sourced water production and AMOC during D-O interstadials (stadials). Concomitant fluctuations of both the European Ice Sheet and the GEBC between ~30 and 17 ka suggest an active role of the upper branch of AMOC in the poleward transport of heat and freshwater to the northern North Atlantic, with direct impacts on deep water formation and AMOC strength. Our GEBC reconstruction is the first physical (non-chemical) record documenting dynamic upper AMOC variability at high resolution in the eastern basin of the North Atlantic. Together with the deep North Atlantic records of northern-sourced water export, they confirm the central role of the AMOC in the generation of abrupt climate changes. The production of this dataset and associated publication was sponsored by the French National Research Agency (ANR) via the LabexMER program (ANR-10-LABX-19-01) and the TANDEM project (ANR-11-RSNR-00023-01). The authors warmly acknowledge the crew of oceanographic cruises ALIENOR 2 (https://doi.org/10.17600/4200200), BOBGEO (https://doi.org/10.17600/9030060), CABTEX (https://doi.org/10.17600/10030050), GITAN (https://doi.org/10.17600/15017800), IMAGES1 (https://doi.org/10.17600/95200110), IMAGESV-MD114 (https://doi.org/10.17600/99200070). TOUCANNE Samuel IFREMER, Unité de Recherche Géosciences Marines, Laboratoire Géophysique et enregistrement Sédimentaire, CS10070, F-29280 Plouzané, France SOULET Guillaume IFREMER, Unité de Recherche Géosciences Marines, Laboratoire Géophysique et enregistrement Sédimentaire, CS10070, F-29280 Plouzané, France VAZQUEZ RIVEIROS Natalia IFREMER, Unité de Recherche Géosciences Marines, Laboratoire Géophysique et enregistrement Sédimentaire, CS10070, F-29280 Plouzané, France BOSWELL Steven Columbia University, Lamont-Doherty Earth Observatory, Palisades, New York 10964, United States DENNIELOU Bernard IFREMER, Unité de Recherche Géosciences Marines, Laboratoire Géophysique et enregistrement Sédimentaire, CS10070, F-29280 Plouzané, France WAELBROECK Claire CNRS, Laboratoire d’Océanographie et du Climat : Expérimentation et Approches Numériques, LOCEAN/IPSL, Sorbonne Université-CNRS-IRD-MNHN, UMR7159, Paris, France BAYON Germain IFREMER, Unité de Recherche Géosciences Marines, Laboratoire Géophysique et enregistrement Sédimentaire, CS10070, F-29280 Plouzané, France MOJTAHID Meryem Université d’Angers, LPG-BIAF UMR-CNRS 6112, UFR Sciences, 2 bd Lavoisier 49045, Angers Cedex 01, France BOSQ Mathieu Université Bordeaux, PACEA, UMR 5199 CNRS - Bâtiment B8, allée Geoffroy Saint Hilaire, 33615 Pessac, France SABINE Marjolaine Université Bordeaux, UMR-CNRS 5805 EPOC - OASU, CS50023, 33615 Pessac, France ZARAGOSI Sébastien Université Bordeaux, UMR-CNRS 5805 EPOC - OASU, CS50023, 33615 Pessac, France BOURILLET Jean-Francois IFREMER, Unité de Recherche Géosciences Marines, Laboratoire Géophysique et enregistrement Sédimentaire, CS10070, F-29280 Plouzané, France MERCIER Herle CNRS, IFREMER, Université de Brest, IRD, Laboratoire d’Océanographie Physique et Spatiale (LOPS), Centre IFREMER de Bretagne, CS10070, F-29280, Plouzané, France SEANOE https://www.seanoe.org/data/00665/77667/illustration.gif The North Atlantic Glacial Eastern Boundary Current (GEBC), with maximum strength during the Dansgaard-Oeschger interstadials AMOC last glacial period Dansgaard-Oeschger paleoclimate paleoceanography eastern boundary current European Slope Current contourites Cross-discipline Currents Sea ice ODATIS aggregation parameters and Essential Variable names 2024-09-16 geonetwork.thesaurus.external.theme.NVS.OD1 Cross-discipline SeaDataNet Parameter Disciplines 2021-04-07 geonetwork.thesaurus.external.parameter.NVS.P08 CDS-OASU Centre de données ODATIS 2024-10-16 geonetwork.thesaurus.local.theme.odatis_centre_donnees /Observational data/in-situ Type de jeux de donnée ODATIS 2024-10-15 geonetwork.thesaurus.local.theme.type_jeux_donnee CC-BY (Creative Commons - Attribution) The North Atlantic Glacial Eastern Boundary Current as a key driver for ice‐sheet – AMOC interactions and climate instability 2021 American Geophysical Union (AGU) TOUCANNE SAMUEL SOULET GUILLAUME VAZQUEZ RIVEIROS NATALIA BOSWELL STEVEN M. DENNIELOU BERNARD WAELBROECK CLAIRE BAYON GERMAIN MOJTAHID MERYEM BOSQ MATHIEU SABINE MARJOLAINE ZARAGOSI SÉBASTIEN BOURILLET JEAN-FRANCOIS MERCIER HERLE 10.1029/2020PA004068 10.17600/9030060 10.17600/10030050 10.17600/15017800 10.17600/95200110 10.17600/99200070 10.17600/4200200 oceans -30.0 0.0 40.0 60.0 2021 XLS, XLSX https://www.seanoe.org/data/00665/77667/data/79721.xlsx WWW:DOWNLOAD-1.0-link--download Processed data Radiogenic neodymium isotopic composition (planktic foraminifera), French Atlantic margin - 17 KB https://www.seanoe.org/data/00665/77667/data/79723.xlsx WWW:DOWNLOAD-1.0-link--download Processed data Stable Carbon/Oxygen isotopic composition (benthic foraminifera), French Atlantic margin - 44 KB https://www.seanoe.org/data/00665/77667/data/79725.xlsx WWW:DOWNLOAD-1.0-link--download Processed data Sortable silt and XRF log (Zr/Rb), French Atlantic margin - 262 KB https://doi.org/10.17882/77667 WWW:LINK-1.0-http--metadata-URL DOI of the product https://www.seanoe.org/data/00665/77667/ rel-canonical Seanoe