Variations of the ACC-CDW during MIS3 traced by magnetic grain deposition in midlatitude South Indian Ocean cores: Connections with the northern hemisphere and with central Antarctica
International audience [1] We examine the magnetic mineral deposition in three cores located at midlatitude sites in the South Indian Ocean, in an area where sediment eroded from the Kerguelen-Crozet plateau and transported by the marine currents, principally the Antarctic Circum Current, accumulate...
Published in: | Geochemistry, Geophysics, Geosystems |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2007
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Subjects: | |
Online Access: | https://hal.science/hal-02913507 https://hal.science/hal-02913507/document https://hal.science/hal-02913507/file/2006GC001532.pdf https://doi.org/10.1029/2006GC001532 |
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EPHE (Ecole pratique des hautes études, Paris): HAL |
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ftecolephe |
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English |
topic |
Components: 4603 words 11 figures 1 table Keywords: paleoceanography south Indian ocean Index Terms: 0473 Biogeosciences: Paleoclimatology and paleoceanography (3344 4900) 1512 Geomagnetism and Paleomagnetism: Environmental magnetism 4938 Paleoceanography: Interhemispheric phasing [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
Components: 4603 words 11 figures 1 table Keywords: paleoceanography south Indian ocean Index Terms: 0473 Biogeosciences: Paleoclimatology and paleoceanography (3344 4900) 1512 Geomagnetism and Paleomagnetism: Environmental magnetism 4938 Paleoceanography: Interhemispheric phasing [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Mazaud, A. Kissel, C. Laj, C. Sicre, M. Michel, Elisabeth Turon, J.L. Variations of the ACC-CDW during MIS3 traced by magnetic grain deposition in midlatitude South Indian Ocean cores: Connections with the northern hemisphere and with central Antarctica |
topic_facet |
Components: 4603 words 11 figures 1 table Keywords: paleoceanography south Indian ocean Index Terms: 0473 Biogeosciences: Paleoclimatology and paleoceanography (3344 4900) 1512 Geomagnetism and Paleomagnetism: Environmental magnetism 4938 Paleoceanography: Interhemispheric phasing [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience [1] We examine the magnetic mineral deposition in three cores located at midlatitude sites in the South Indian Ocean, in an area where sediment eroded from the Kerguelen-Crozet plateau and transported by the marine currents, principally the Antarctic Circum Current, accumulates at a high sedimentation rate. We focus on Marine Isotopic Stage 3, characterized by large climatic fluctuations at northern latitudes, and compare the obtained records to the climatic records at Byrd (Antarctica) and Summit (GISP2, Greenland) and to the North Atlantic Deep Water variations in the North Atlantic. Magnetic mineral deposition at the studied sites exhibits a profile with maxima at the time of Heinrich events H4 and H5, which suggests a strong Antarctic Circum Current when the North Atlantic Deep Water was reduced at northern latitude during these events. We show that an interhemispheric seesaw, characterized by temporary surface warmings in the southern hemisphere, is also marked by a strong Antarctic Circum Current at the time of the northern Heinrich events. The rapid Dansgaard-Oeschger oscillations evidenced in the northern records after interstadials IS12 and IS8 are not visible, suggesting a limited counterpart of these events in the midlatitude southern Indian Ocean. |
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) Climat et Magnétisme (CLIMAG) 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)) Paléocéanographie (PALEOCEAN) 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) |
format |
Article in Journal/Newspaper |
author |
Mazaud, A. Kissel, C. Laj, C. Sicre, M. Michel, Elisabeth Turon, J.L. |
author_facet |
Mazaud, A. Kissel, C. Laj, C. Sicre, M. Michel, Elisabeth Turon, J.L. |
author_sort |
Mazaud, A. |
title |
Variations of the ACC-CDW during MIS3 traced by magnetic grain deposition in midlatitude South Indian Ocean cores: Connections with the northern hemisphere and with central Antarctica |
title_short |
Variations of the ACC-CDW during MIS3 traced by magnetic grain deposition in midlatitude South Indian Ocean cores: Connections with the northern hemisphere and with central Antarctica |
title_full |
Variations of the ACC-CDW during MIS3 traced by magnetic grain deposition in midlatitude South Indian Ocean cores: Connections with the northern hemisphere and with central Antarctica |
title_fullStr |
Variations of the ACC-CDW during MIS3 traced by magnetic grain deposition in midlatitude South Indian Ocean cores: Connections with the northern hemisphere and with central Antarctica |
title_full_unstemmed |
Variations of the ACC-CDW during MIS3 traced by magnetic grain deposition in midlatitude South Indian Ocean cores: Connections with the northern hemisphere and with central Antarctica |
title_sort |
variations of the acc-cdw during mis3 traced by magnetic grain deposition in midlatitude south indian ocean cores: connections with the northern hemisphere and with central antarctica |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-02913507 https://hal.science/hal-02913507/document https://hal.science/hal-02913507/file/2006GC001532.pdf https://doi.org/10.1029/2006GC001532 |
genre |
Antarc* Antarctic Antarctica Greenland North Atlantic Deep Water North Atlantic |
genre_facet |
Antarc* Antarctic Antarctica Greenland North Atlantic Deep Water North Atlantic |
op_source |
EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.science/hal-02913507 Geochemistry, Geophysics, Geosystems, 2007, 8 (5), pp.n/a-n/a. ⟨10.1029/2006GC001532⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2006GC001532 hal-02913507 https://hal.science/hal-02913507 https://hal.science/hal-02913507/document https://hal.science/hal-02913507/file/2006GC001532.pdf doi:10.1029/2006GC001532 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2006GC001532 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
8 |
container_issue |
5 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1810488342428516352 |
spelling |
ftecolephe:oai:HAL:hal-02913507v1 2024-09-15T17:42:00+00:00 Variations of the ACC-CDW during MIS3 traced by magnetic grain deposition in midlatitude South Indian Ocean cores: Connections with the northern hemisphere and with central Antarctica Mazaud, A. Kissel, C. Laj, C. Sicre, M. Michel, Elisabeth Turon, J.L. 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) Climat et Magnétisme (CLIMAG) 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)) Paléocéanographie (PALEOCEAN) 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) 2007-05 https://hal.science/hal-02913507 https://hal.science/hal-02913507/document https://hal.science/hal-02913507/file/2006GC001532.pdf https://doi.org/10.1029/2006GC001532 en eng HAL CCSD AGU and the Geochemical Society info:eu-repo/semantics/altIdentifier/doi/10.1029/2006GC001532 hal-02913507 https://hal.science/hal-02913507 https://hal.science/hal-02913507/document https://hal.science/hal-02913507/file/2006GC001532.pdf doi:10.1029/2006GC001532 info:eu-repo/semantics/OpenAccess EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.science/hal-02913507 Geochemistry, Geophysics, Geosystems, 2007, 8 (5), pp.n/a-n/a. ⟨10.1029/2006GC001532⟩ Components: 4603 words 11 figures 1 table Keywords: paleoceanography south Indian ocean Index Terms: 0473 Biogeosciences: Paleoclimatology and paleoceanography (3344 4900) 1512 Geomagnetism and Paleomagnetism: Environmental magnetism 4938 Paleoceanography: Interhemispheric phasing [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2007 ftecolephe https://doi.org/10.1029/2006GC001532 2024-07-22T23:39:13Z International audience [1] We examine the magnetic mineral deposition in three cores located at midlatitude sites in the South Indian Ocean, in an area where sediment eroded from the Kerguelen-Crozet plateau and transported by the marine currents, principally the Antarctic Circum Current, accumulates at a high sedimentation rate. We focus on Marine Isotopic Stage 3, characterized by large climatic fluctuations at northern latitudes, and compare the obtained records to the climatic records at Byrd (Antarctica) and Summit (GISP2, Greenland) and to the North Atlantic Deep Water variations in the North Atlantic. Magnetic mineral deposition at the studied sites exhibits a profile with maxima at the time of Heinrich events H4 and H5, which suggests a strong Antarctic Circum Current when the North Atlantic Deep Water was reduced at northern latitude during these events. We show that an interhemispheric seesaw, characterized by temporary surface warmings in the southern hemisphere, is also marked by a strong Antarctic Circum Current at the time of the northern Heinrich events. The rapid Dansgaard-Oeschger oscillations evidenced in the northern records after interstadials IS12 and IS8 are not visible, suggesting a limited counterpart of these events in the midlatitude southern Indian Ocean. Article in Journal/Newspaper Antarc* Antarctic Antarctica Greenland North Atlantic Deep Water North Atlantic EPHE (Ecole pratique des hautes études, Paris): HAL Geochemistry, Geophysics, Geosystems 8 5 n/a n/a |