Changes in Holocene meridional circulation and poleward Atlantic flow: the Bay of Biscay as a nodal point
International audience This paper documents the last 10 ka evolution of one of the key parameters of climate: sea-surface temperatures (SST) in the subpolar North Atlantic. We focus on the southern Bay of Biscay, a highly sensitive oceanographic area because of its strategic and nodal position regar...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2017
|
Subjects: | |
Online Access: | https://hal.science/hal-01392629 https://hal.science/hal-01392629/document https://hal.science/hal-01392629/file/cp-13-201-2017.pdf https://doi.org/10.5194/cp-13-201-2017 |
id |
ftceafr:oai:HAL:hal-01392629v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
language |
English |
topic |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Mary, Yannick Eynaud, Frédérique Colin, Christophe Rossignol, Linda Brocheray, Sandra Mojtahid, Meryem Garcia, Jennifer Peral, Marion Howa, Hélène Zaragosi, Sébastien Cremer, Michel Changes in Holocene meridional circulation and poleward Atlantic flow: the Bay of Biscay as a nodal point |
topic_facet |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience This paper documents the last 10 ka evolution of one of the key parameters of climate: sea-surface temperatures (SST) in the subpolar North Atlantic. We focus on the southern Bay of Biscay, a highly sensitive oceanographic area because of its strategic and nodal position regarding the dynamics of the North Atlantic subpolar and subtropical gyres. This site furthermore offers unique sedimentary environments characterized by exceptional accumulation rates, enabling the study of Holocene archives at (infra)centennial scales. Our results mainly derive from planktonic foraminiferal association analysis on two cores from the southern Landes plateau. These associations were used as quantitative tools (thanks to the Modern Analog Technique) to track past hydrographical changes. SST reconstructions were thus obtained at an unprecedented resolution and compared to a compilation of Holocene records from the northern North Atlantic. From this regional perspective are shown fundamental timing differences between the gyre dynamics, nuancing classical views of a simple meridional overturning cell. |
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) Géosciences Paris Sud (GEOPS) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Planétologie et Géodynamique - Angers (LPG-ANGERS) Laboratoire de Planétologie et Géodynamique UMR 6112 (LPG) Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST) Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST) Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 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) |
format |
Article in Journal/Newspaper |
author |
Mary, Yannick Eynaud, Frédérique Colin, Christophe Rossignol, Linda Brocheray, Sandra Mojtahid, Meryem Garcia, Jennifer Peral, Marion Howa, Hélène Zaragosi, Sébastien Cremer, Michel |
author_facet |
Mary, Yannick Eynaud, Frédérique Colin, Christophe Rossignol, Linda Brocheray, Sandra Mojtahid, Meryem Garcia, Jennifer Peral, Marion Howa, Hélène Zaragosi, Sébastien Cremer, Michel |
author_sort |
Mary, Yannick |
title |
Changes in Holocene meridional circulation and poleward Atlantic flow: the Bay of Biscay as a nodal point |
title_short |
Changes in Holocene meridional circulation and poleward Atlantic flow: the Bay of Biscay as a nodal point |
title_full |
Changes in Holocene meridional circulation and poleward Atlantic flow: the Bay of Biscay as a nodal point |
title_fullStr |
Changes in Holocene meridional circulation and poleward Atlantic flow: the Bay of Biscay as a nodal point |
title_full_unstemmed |
Changes in Holocene meridional circulation and poleward Atlantic flow: the Bay of Biscay as a nodal point |
title_sort |
changes in holocene meridional circulation and poleward atlantic flow: the bay of biscay as a nodal point |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.science/hal-01392629 https://hal.science/hal-01392629/document https://hal.science/hal-01392629/file/cp-13-201-2017.pdf https://doi.org/10.5194/cp-13-201-2017 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-01392629 Climate of the Past, 2017, 13 (3), pp.201-216. ⟨10.5194/cp-13-201-2017⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-13-201-2017 hal-01392629 https://hal.science/hal-01392629 https://hal.science/hal-01392629/document https://hal.science/hal-01392629/file/cp-13-201-2017.pdf doi:10.5194/cp-13-201-2017 OKINA: ua14601 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-13-201-2017 |
container_title |
Climate of the Past |
container_volume |
13 |
container_issue |
3 |
container_start_page |
201 |
op_container_end_page |
216 |
_version_ |
1810459973711298560 |
spelling |
ftceafr:oai:HAL:hal-01392629v1 2024-09-15T18:21:26+00:00 Changes in Holocene meridional circulation and poleward Atlantic flow: the Bay of Biscay as a nodal point Mary, Yannick Eynaud, Frédérique Colin, Christophe Rossignol, Linda Brocheray, Sandra Mojtahid, Meryem Garcia, Jennifer Peral, Marion Howa, Hélène Zaragosi, Sébastien Cremer, Michel 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) Géosciences Paris Sud (GEOPS) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Planétologie et Géodynamique - Angers (LPG-ANGERS) Laboratoire de Planétologie et Géodynamique UMR 6112 (LPG) Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST) Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST) Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 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) 2017 https://hal.science/hal-01392629 https://hal.science/hal-01392629/document https://hal.science/hal-01392629/file/cp-13-201-2017.pdf https://doi.org/10.5194/cp-13-201-2017 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-13-201-2017 hal-01392629 https://hal.science/hal-01392629 https://hal.science/hal-01392629/document https://hal.science/hal-01392629/file/cp-13-201-2017.pdf doi:10.5194/cp-13-201-2017 OKINA: ua14601 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-01392629 Climate of the Past, 2017, 13 (3), pp.201-216. ⟨10.5194/cp-13-201-2017⟩ [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2017 ftceafr https://doi.org/10.5194/cp-13-201-2017 2024-07-22T13:18:33Z International audience This paper documents the last 10 ka evolution of one of the key parameters of climate: sea-surface temperatures (SST) in the subpolar North Atlantic. We focus on the southern Bay of Biscay, a highly sensitive oceanographic area because of its strategic and nodal position regarding the dynamics of the North Atlantic subpolar and subtropical gyres. This site furthermore offers unique sedimentary environments characterized by exceptional accumulation rates, enabling the study of Holocene archives at (infra)centennial scales. Our results mainly derive from planktonic foraminiferal association analysis on two cores from the southern Landes plateau. These associations were used as quantitative tools (thanks to the Modern Analog Technique) to track past hydrographical changes. SST reconstructions were thus obtained at an unprecedented resolution and compared to a compilation of Holocene records from the northern North Atlantic. From this regional perspective are shown fundamental timing differences between the gyre dynamics, nuancing classical views of a simple meridional overturning cell. Article in Journal/Newspaper North Atlantic HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Climate of the Past 13 3 201 216 |