Deep-water coral records of glacial and recent ocean-atmosphere dynamics from the Perth Canyon in the southeast Indian Ocean
International audience We present radiocarbon and neodymium isotope records from accurately dated (U-series) live and fossil (<2 ka, 17.5 to 29.6 ka BP) deep-water corals, collected between 675 and 1788 m from the Perth Canyon, offshore southwest Australia. These records provide the first insight...
Published in: | Quaternary Science Advances |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2022
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Online Access: | https://hal.science/hal-03957086 https://hal.science/hal-03957086/document https://hal.science/hal-03957086/file/1-s2.0-S2666033422000053-main.pdf https://doi.org/10.1016/j.qsa.2022.100052 |
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ftuniversailles:oai:HAL:hal-03957086v1 2024-04-28T07:57:00+00:00 Deep-water coral records of glacial and recent ocean-atmosphere dynamics from the Perth Canyon in the southeast Indian Ocean Trotter, Julie, A Mcculloch, Malcolm, T d'Olivo, Juan, Pablo Scott, Pete Tisnérat-Laborde, Nadine Taviani, Marco Montagna, Paolo The University of Western Australia (UWA) 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) Géochrononologie Traceurs Archéométrie (GEOTRAC) 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)) Istituto di Science Marine (ISMAR ) National Research Council of Italy Istituto di Scienze Polari / Institute of Polar Sciences Bologna (ISP) Consiglio Nazionale delle Ricerche Bologna (CNR) 2022-04-16 https://hal.science/hal-03957086 https://hal.science/hal-03957086/document https://hal.science/hal-03957086/file/1-s2.0-S2666033422000053-main.pdf https://doi.org/10.1016/j.qsa.2022.100052 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.qsa.2022.100052 hal-03957086 https://hal.science/hal-03957086 https://hal.science/hal-03957086/document https://hal.science/hal-03957086/file/1-s2.0-S2666033422000053-main.pdf doi:10.1016/j.qsa.2022.100052 info:eu-repo/semantics/OpenAccess EISSN: 2666-0334 Quaternary Science Advances https://hal.science/hal-03957086 Quaternary Science Advances, 2022, 6, pp.100052. ⟨10.1016/j.qsa.2022.100052⟩ Deep-water coral Indian Ocean Nd isotopes Ocean ventilation Last Glacial Maximum Perth Canyon [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 2022 ftuniversailles https://doi.org/10.1016/j.qsa.2022.100052 2024-04-04T17:28:57Z International audience We present radiocarbon and neodymium isotope records from accurately dated (U-series) live and fossil (<2 ka, 17.5 to 29.6 ka BP) deep-water corals, collected between 675 and 1788 m from the Perth Canyon, offshore southwest Australia. These records provide the first insights into recent and last glacial intermediate-deep water circulation and ventilation histories from the poorly represented southeast Indian Ocean. Ocean ventilation fluctuated significantly during the last glacial period, being highly ventilated during early Marine Isotope Stage 2 and the early deglaciation, yet less ventilated and more stratified during the Last Glacial Maximum. Furthermore, the Perth Canyon corals recorded a major and rapid (~300 years) perturbation at 25 ka, indicating that middepth waters were exposed to poorly ventilated, unradiogenic Nd deeper waters. We link this to similar, age equivalent changes at geographically disparate sites from the southeast Atlantic to the Southern Ocean south of Tasmania, together with fluctuations in Antarctic sea-ice, oceanic fronts, and Atlantic Meridional Overturning Circulation (AMOC). This widespread Southern Ocean event indicates a transient breach in upper and lower ocean cell boundaries of the MOC, providing further evidence for the non-steady state, zonal dynamics of the glacial Southern Ocean. Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Quaternary Science Advances 6 100052 |
institution |
Open Polar |
collection |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
Deep-water coral Indian Ocean Nd isotopes Ocean ventilation Last Glacial Maximum Perth Canyon [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
Deep-water coral Indian Ocean Nd isotopes Ocean ventilation Last Glacial Maximum Perth Canyon [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Trotter, Julie, A Mcculloch, Malcolm, T d'Olivo, Juan, Pablo Scott, Pete Tisnérat-Laborde, Nadine Taviani, Marco Montagna, Paolo Deep-water coral records of glacial and recent ocean-atmosphere dynamics from the Perth Canyon in the southeast Indian Ocean |
topic_facet |
Deep-water coral Indian Ocean Nd isotopes Ocean ventilation Last Glacial Maximum Perth Canyon [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience We present radiocarbon and neodymium isotope records from accurately dated (U-series) live and fossil (<2 ka, 17.5 to 29.6 ka BP) deep-water corals, collected between 675 and 1788 m from the Perth Canyon, offshore southwest Australia. These records provide the first insights into recent and last glacial intermediate-deep water circulation and ventilation histories from the poorly represented southeast Indian Ocean. Ocean ventilation fluctuated significantly during the last glacial period, being highly ventilated during early Marine Isotope Stage 2 and the early deglaciation, yet less ventilated and more stratified during the Last Glacial Maximum. Furthermore, the Perth Canyon corals recorded a major and rapid (~300 years) perturbation at 25 ka, indicating that middepth waters were exposed to poorly ventilated, unradiogenic Nd deeper waters. We link this to similar, age equivalent changes at geographically disparate sites from the southeast Atlantic to the Southern Ocean south of Tasmania, together with fluctuations in Antarctic sea-ice, oceanic fronts, and Atlantic Meridional Overturning Circulation (AMOC). This widespread Southern Ocean event indicates a transient breach in upper and lower ocean cell boundaries of the MOC, providing further evidence for the non-steady state, zonal dynamics of the glacial Southern Ocean. |
author2 |
The University of Western Australia (UWA) 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) Géochrononologie Traceurs Archéométrie (GEOTRAC) 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)) Istituto di Science Marine (ISMAR ) National Research Council of Italy Istituto di Scienze Polari / Institute of Polar Sciences Bologna (ISP) Consiglio Nazionale delle Ricerche Bologna (CNR) |
format |
Article in Journal/Newspaper |
author |
Trotter, Julie, A Mcculloch, Malcolm, T d'Olivo, Juan, Pablo Scott, Pete Tisnérat-Laborde, Nadine Taviani, Marco Montagna, Paolo |
author_facet |
Trotter, Julie, A Mcculloch, Malcolm, T d'Olivo, Juan, Pablo Scott, Pete Tisnérat-Laborde, Nadine Taviani, Marco Montagna, Paolo |
author_sort |
Trotter, Julie, A |
title |
Deep-water coral records of glacial and recent ocean-atmosphere dynamics from the Perth Canyon in the southeast Indian Ocean |
title_short |
Deep-water coral records of glacial and recent ocean-atmosphere dynamics from the Perth Canyon in the southeast Indian Ocean |
title_full |
Deep-water coral records of glacial and recent ocean-atmosphere dynamics from the Perth Canyon in the southeast Indian Ocean |
title_fullStr |
Deep-water coral records of glacial and recent ocean-atmosphere dynamics from the Perth Canyon in the southeast Indian Ocean |
title_full_unstemmed |
Deep-water coral records of glacial and recent ocean-atmosphere dynamics from the Perth Canyon in the southeast Indian Ocean |
title_sort |
deep-water coral records of glacial and recent ocean-atmosphere dynamics from the perth canyon in the southeast indian ocean |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03957086 https://hal.science/hal-03957086/document https://hal.science/hal-03957086/file/1-s2.0-S2666033422000053-main.pdf https://doi.org/10.1016/j.qsa.2022.100052 |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_source |
EISSN: 2666-0334 Quaternary Science Advances https://hal.science/hal-03957086 Quaternary Science Advances, 2022, 6, pp.100052. ⟨10.1016/j.qsa.2022.100052⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.qsa.2022.100052 hal-03957086 https://hal.science/hal-03957086 https://hal.science/hal-03957086/document https://hal.science/hal-03957086/file/1-s2.0-S2666033422000053-main.pdf doi:10.1016/j.qsa.2022.100052 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.qsa.2022.100052 |
container_title |
Quaternary Science Advances |
container_volume |
6 |
container_start_page |
100052 |
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1797586137860014080 |