High-resolution sea surface reconstructions off Cape Hatteras over the last 10 ka
International audience This study presents high-resolution foraminiferal-based sea surface temperature, sea surface salinity and upper water column stratification reconstructions off Cape Hatteras, a region sensitive to atmospheric and thermohaline circulation changes associated with the Gulf Stream...
Published in: | Paleoceanography |
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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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Online Access: | https://hal.science/hal-00737002 https://hal.science/hal-00737002/document https://hal.science/hal-00737002/file/2011PA002184.pdf https://doi.org/10.1029/2011PA002184 |
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HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
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English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Cléroux, C. Debret, Maxime Cortijo, Elsa Duplessy, J.C. Dewilde, F. Reijmer, J. Massei, Nicolas High-resolution sea surface reconstructions off Cape Hatteras over the last 10 ka |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience This study presents high-resolution foraminiferal-based sea surface temperature, sea surface salinity and upper water column stratification reconstructions off Cape Hatteras, a region sensitive to atmospheric and thermohaline circulation changes associated with the Gulf Stream. We focus on the last 10,000 years (10 ka) to study the surface hydrology changes under our current climate conditions and discuss the centennial to millennial time scale variability. We observed opposite evolutions between the conditions off Cape Hatteras and those south of Iceland, known today for the North Atlantic Oscillation pattern. We interpret the temperature and salinity changes in both regions as co-variation of activities of the subtropical and subpolar gyres. Around 8.3 ka and 5.2-3.5 ka, positive salinity anomalies are reconstructed off Cape Hatteras. We demonstrate, for the 5.2-3.5 ka period, that the salinity increase was caused by the cessation of the low salinity surface flow coming from the north. A northward displacement of the Gulf Stream, blocking the southbound low-salinity flow, concomitant to a reduced Meridional Overturning Circulation is the most likely scenario. Finally, wavelet transform analysis revealed a 1000-year period pacing the δ18O signal over the early Holocene. This 1000-year frequency band is significantly coherent with the 1000-year frequency band of Total Solar Irradiance (TSI) between 9.5 ka and 7 ka and both signals are in phase over the rest of the studied period. |
author2 |
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)) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) Morphodynamique Continentale et Côtière (M2C) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rouen Normandie (UNIROUEN) Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS) Department of Sedimentology and Marine Geology, Department of Sedimentology and Marine Geology FALW, VU University Amsterdam, Amsterdam, Netherlands |
format |
Article in Journal/Newspaper |
author |
Cléroux, C. Debret, Maxime Cortijo, Elsa Duplessy, J.C. Dewilde, F. Reijmer, J. Massei, Nicolas |
author_facet |
Cléroux, C. Debret, Maxime Cortijo, Elsa Duplessy, J.C. Dewilde, F. Reijmer, J. Massei, Nicolas |
author_sort |
Cléroux, C. |
title |
High-resolution sea surface reconstructions off Cape Hatteras over the last 10 ka |
title_short |
High-resolution sea surface reconstructions off Cape Hatteras over the last 10 ka |
title_full |
High-resolution sea surface reconstructions off Cape Hatteras over the last 10 ka |
title_fullStr |
High-resolution sea surface reconstructions off Cape Hatteras over the last 10 ka |
title_full_unstemmed |
High-resolution sea surface reconstructions off Cape Hatteras over the last 10 ka |
title_sort |
high-resolution sea surface reconstructions off cape hatteras over the last 10 ka |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://hal.science/hal-00737002 https://hal.science/hal-00737002/document https://hal.science/hal-00737002/file/2011PA002184.pdf https://doi.org/10.1029/2011PA002184 |
genre |
Iceland North Atlantic North Atlantic oscillation |
genre_facet |
Iceland North Atlantic North Atlantic oscillation |
op_source |
ISSN: 0883-8305 Paleoceanography https://hal.science/hal-00737002 Paleoceanography, 2012, 27 (1), pp.PA1205. ⟨10.1029/2011PA002184⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2011PA002184 hal-00737002 https://hal.science/hal-00737002 https://hal.science/hal-00737002/document https://hal.science/hal-00737002/file/2011PA002184.pdf doi:10.1029/2011PA002184 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2011PA002184 |
container_title |
Paleoceanography |
container_volume |
27 |
container_issue |
1 |
container_start_page |
n/a |
op_container_end_page |
n/a |
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1801378144614088704 |
spelling |
ftceafr:oai:HAL:hal-00737002v1 2024-06-09T07:47:12+00:00 High-resolution sea surface reconstructions off Cape Hatteras over the last 10 ka Cléroux, C. Debret, Maxime Cortijo, Elsa Duplessy, J.C. Dewilde, F. Reijmer, J. Massei, Nicolas 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)) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) Morphodynamique Continentale et Côtière (M2C) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rouen Normandie (UNIROUEN) Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS) Department of Sedimentology and Marine Geology, Department of Sedimentology and Marine Geology FALW, VU University Amsterdam, Amsterdam, Netherlands 2012 https://hal.science/hal-00737002 https://hal.science/hal-00737002/document https://hal.science/hal-00737002/file/2011PA002184.pdf https://doi.org/10.1029/2011PA002184 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2011PA002184 hal-00737002 https://hal.science/hal-00737002 https://hal.science/hal-00737002/document https://hal.science/hal-00737002/file/2011PA002184.pdf doi:10.1029/2011PA002184 info:eu-repo/semantics/OpenAccess ISSN: 0883-8305 Paleoceanography https://hal.science/hal-00737002 Paleoceanography, 2012, 27 (1), pp.PA1205. ⟨10.1029/2011PA002184⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2012 ftceafr https://doi.org/10.1029/2011PA002184 2024-05-16T14:51:36Z International audience This study presents high-resolution foraminiferal-based sea surface temperature, sea surface salinity and upper water column stratification reconstructions off Cape Hatteras, a region sensitive to atmospheric and thermohaline circulation changes associated with the Gulf Stream. We focus on the last 10,000 years (10 ka) to study the surface hydrology changes under our current climate conditions and discuss the centennial to millennial time scale variability. We observed opposite evolutions between the conditions off Cape Hatteras and those south of Iceland, known today for the North Atlantic Oscillation pattern. We interpret the temperature and salinity changes in both regions as co-variation of activities of the subtropical and subpolar gyres. Around 8.3 ka and 5.2-3.5 ka, positive salinity anomalies are reconstructed off Cape Hatteras. We demonstrate, for the 5.2-3.5 ka period, that the salinity increase was caused by the cessation of the low salinity surface flow coming from the north. A northward displacement of the Gulf Stream, blocking the southbound low-salinity flow, concomitant to a reduced Meridional Overturning Circulation is the most likely scenario. Finally, wavelet transform analysis revealed a 1000-year period pacing the δ18O signal over the early Holocene. This 1000-year frequency band is significantly coherent with the 1000-year frequency band of Total Solar Irradiance (TSI) between 9.5 ka and 7 ka and both signals are in phase over the rest of the studied period. Article in Journal/Newspaper Iceland North Atlantic North Atlantic oscillation HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Paleoceanography 27 1 n/a n/a |