New constraints on European glacial freshwater releases to the North Atlantic Ocean
International audience During the late Quaternary, both external and internal forcings have driven major climatic shifts from glacial to interglacial conditions. Nonlinear climatic steps characterized the transitions leading to these extrema, with intermediate excursions particularly well expressed...
Published in: | Geophysical Research Letters |
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Main Authors: | , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2012
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Subjects: | |
Online Access: | https://insu.hal.science/insu-00724819 https://insu.hal.science/insu-00724819/document https://insu.hal.science/insu-00724819/file/GRL-Eynaud.pdf https://doi.org/10.1029/2012GL052100 |
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ftuniversailles:oai:HAL:insu-00724819v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
Bay of Biscay Heinrich stadials Last Glacial Maximum paleosalinity [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
Bay of Biscay Heinrich stadials Last Glacial Maximum paleosalinity [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes Eynaud, Frédérique Malaizé, Bruno Zaragosi, Sébastien de Vernal, Anne Scourse, James Pujol, Claude Cortijo, Elsa Grousset, Francis, E. Pénaud, Aurélie Toucanne, Samuel Turon, Jean-Louis Auffret, Gérard New constraints on European glacial freshwater releases to the North Atlantic Ocean |
topic_facet |
Bay of Biscay Heinrich stadials Last Glacial Maximum paleosalinity [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience During the late Quaternary, both external and internal forcings have driven major climatic shifts from glacial to interglacial conditions. Nonlinear climatic steps characterized the transitions leading to these extrema, with intermediate excursions particularly well expressed in the dynamics of the Northern Hemisphere cryosphere. Here we document the impact of these dynamics on the north-eastern North Atlantic Ocean, focussing on the 35-10 ka interval. Sea-surface salinities have been reconstructed quantitatively based on two independent methods from core MD95-2002, recovered from the northern Bay of Biscay adjacent to the axis of the Manche paleoriver outlet and thus in connection with proximal European ice sheets and glaciers. Quantitative reconstructions deriving from dinocyst and planktonic foraminiferal analyses have been combined within a robust chronology to assess the amplitude and timing of hydrological changes in this region. Our study evidences strong pulsed freshwater discharges which may have impacted the North Atlantic Meridional Overturning Circulation. |
author2 |
Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) Centre de recherche sur la dynamique du système Terre (GEOTOP) École Polytechnique de Montréal (EPM)-McGill University = Université McGill Montréal, Canada -Université de Montréal (UdeM)-Université du Québec en Abitibi-Témiscamingue (UQAT)-Université du Québec à Rimouski (UQAR)-Concordia University Montreal -Université du Québec à Montréal = University of Québec in Montréal (UQAM) School of Ocean Sciences Bangor University Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Paléocéanographie (PALEOCEAN) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Domaines Océaniques (LDO) Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Observatoire des Sciences de l'Univers-Institut d'écologie et environnement-Centre National de la Recherche Scientifique (CNRS) Unité Géosciences Marines (GM) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) European Project: 243908,EC:FP7:ENV,FP7-ENV-2009-1,PAST4FUTURE(2010) |
format |
Article in Journal/Newspaper |
author |
Eynaud, Frédérique Malaizé, Bruno Zaragosi, Sébastien de Vernal, Anne Scourse, James Pujol, Claude Cortijo, Elsa Grousset, Francis, E. Pénaud, Aurélie Toucanne, Samuel Turon, Jean-Louis Auffret, Gérard |
author_facet |
Eynaud, Frédérique Malaizé, Bruno Zaragosi, Sébastien de Vernal, Anne Scourse, James Pujol, Claude Cortijo, Elsa Grousset, Francis, E. Pénaud, Aurélie Toucanne, Samuel Turon, Jean-Louis Auffret, Gérard |
author_sort |
Eynaud, Frédérique |
title |
New constraints on European glacial freshwater releases to the North Atlantic Ocean |
title_short |
New constraints on European glacial freshwater releases to the North Atlantic Ocean |
title_full |
New constraints on European glacial freshwater releases to the North Atlantic Ocean |
title_fullStr |
New constraints on European glacial freshwater releases to the North Atlantic Ocean |
title_full_unstemmed |
New constraints on European glacial freshwater releases to the North Atlantic Ocean |
title_sort |
new constraints on european glacial freshwater releases to the north atlantic ocean |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://insu.hal.science/insu-00724819 https://insu.hal.science/insu-00724819/document https://insu.hal.science/insu-00724819/file/GRL-Eynaud.pdf https://doi.org/10.1029/2012GL052100 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-00724819 Geophysical Research Letters, 2012, 39, pp.L15601. ⟨10.1029/2012GL052100⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2012GL052100 info:eu-repo/grantAgreement/EC/FP7/243908/EU/Climate change - Learning from the past climate/PAST4FUTURE insu-00724819 https://insu.hal.science/insu-00724819 https://insu.hal.science/insu-00724819/document https://insu.hal.science/insu-00724819/file/GRL-Eynaud.pdf doi:10.1029/2012GL052100 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2012GL052100 |
container_title |
Geophysical Research Letters |
container_volume |
39 |
container_issue |
15 |
_version_ |
1799484504801280000 |
spelling |
ftuniversailles:oai:HAL:insu-00724819v1 2024-05-19T07:44:40+00:00 New constraints on European glacial freshwater releases to the North Atlantic Ocean Eynaud, Frédérique Malaizé, Bruno Zaragosi, Sébastien de Vernal, Anne Scourse, James Pujol, Claude Cortijo, Elsa Grousset, Francis, E. Pénaud, Aurélie Toucanne, Samuel Turon, Jean-Louis Auffret, Gérard Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) Centre de recherche sur la dynamique du système Terre (GEOTOP) École Polytechnique de Montréal (EPM)-McGill University = Université McGill Montréal, Canada -Université de Montréal (UdeM)-Université du Québec en Abitibi-Témiscamingue (UQAT)-Université du Québec à Rimouski (UQAR)-Concordia University Montreal -Université du Québec à Montréal = University of Québec in Montréal (UQAM) School of Ocean Sciences Bangor University Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Paléocéanographie (PALEOCEAN) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Domaines Océaniques (LDO) Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Observatoire des Sciences de l'Univers-Institut d'écologie et environnement-Centre National de la Recherche Scientifique (CNRS) Unité Géosciences Marines (GM) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) European Project: 243908,EC:FP7:ENV,FP7-ENV-2009-1,PAST4FUTURE(2010) 2012-08-01 https://insu.hal.science/insu-00724819 https://insu.hal.science/insu-00724819/document https://insu.hal.science/insu-00724819/file/GRL-Eynaud.pdf https://doi.org/10.1029/2012GL052100 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2012GL052100 info:eu-repo/grantAgreement/EC/FP7/243908/EU/Climate change - Learning from the past climate/PAST4FUTURE insu-00724819 https://insu.hal.science/insu-00724819 https://insu.hal.science/insu-00724819/document https://insu.hal.science/insu-00724819/file/GRL-Eynaud.pdf doi:10.1029/2012GL052100 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-00724819 Geophysical Research Letters, 2012, 39, pp.L15601. ⟨10.1029/2012GL052100⟩ Bay of Biscay Heinrich stadials Last Glacial Maximum paleosalinity [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2012 ftuniversailles https://doi.org/10.1029/2012GL052100 2024-04-25T00:14:31Z International audience During the late Quaternary, both external and internal forcings have driven major climatic shifts from glacial to interglacial conditions. Nonlinear climatic steps characterized the transitions leading to these extrema, with intermediate excursions particularly well expressed in the dynamics of the Northern Hemisphere cryosphere. Here we document the impact of these dynamics on the north-eastern North Atlantic Ocean, focussing on the 35-10 ka interval. Sea-surface salinities have been reconstructed quantitatively based on two independent methods from core MD95-2002, recovered from the northern Bay of Biscay adjacent to the axis of the Manche paleoriver outlet and thus in connection with proximal European ice sheets and glaciers. Quantitative reconstructions deriving from dinocyst and planktonic foraminiferal analyses have been combined within a robust chronology to assess the amplitude and timing of hydrological changes in this region. Our study evidences strong pulsed freshwater discharges which may have impacted the North Atlantic Meridional Overturning Circulation. Article in Journal/Newspaper North Atlantic Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Geophysical Research Letters 39 15 |