Heat transport processes of the Indonesian Throughflow along the outflow pathway in the eastern Indian Ocean during the last 160 kyr
International audience Abstract As the only low‐latitude connection along the return branch of the Great Conveyor Belt, the Indonesian Throughflow (ITF) plays an important role in the large‐scale ocean–atmosphere interaction in the tropical region. However, the heat transport processes of the ITF al...
Published in: | Paleoceanography and Paleoclimatology |
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Main Authors: | , , , , |
Other Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2023
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Online Access: | https://hal.science/hal-04196629 https://hal.science/hal-04196629/document https://hal.science/hal-04196629/file/Paleoceanog%20and%20Paleoclimatol%20-%202023%20-%20Ding%20-%20Heat%20Transport%20Processes%20of%20the%20Indonesian%20Throughflow%20Along%20the%20Outflow.pdf https://doi.org/10.1029/2023PA004620 |
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ftceafr:oai:HAL:hal-04196629v1 |
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Open Polar |
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HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
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language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Ding, Xuan Bassinot, Franck Pang, Xiaolei Kou, Yingxin Zhou, Liping Heat transport processes of the Indonesian Throughflow along the outflow pathway in the eastern Indian Ocean during the last 160 kyr |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Abstract As the only low‐latitude connection along the return branch of the Great Conveyor Belt, the Indonesian Throughflow (ITF) plays an important role in the large‐scale ocean–atmosphere interaction in the tropical region. However, the heat transport processes of the ITF along the outflow pathway in the eastern Indian Ocean over the recent geologic period is still debated. In this study, by using Mg/Ca ratios of the surface‐dwelling and thermocline‐dwelling planktonic foraminifera Globigerinoides ruber and Pulleniatina obliquiloculata , we reconstruct surface and thermocline water temperatures and thermocline structure at two sites in the main outflow path of the ITF in the eastern Indian Ocean for the last 160 kyr, and compare these new data with those from two cores in the central Indo‐Pacific Warm Pool. Our results show that, on the orbital time scale, the thermocline structure changes above the equatorial 90°E Ridge mimic those of the eastern Timor Sea, indicating that the ITF vertical structure remained unchanged during its penetration into the Indian Ocean. The thermocline water temperature in the equatorial western Pacific and eastern Indian Ocean presents similar change trend, suggesting that ITF is likely to be an important route for thermocline water transport into the Indian Ocean. However, the vertical structure of the ITF varied through time, reflecting the effects of sea level and orbitally‐driven monsoonal activity. This impacted heat transport processes, resulting in changes in the surface water temperature along the outflow pathway in the eastern Indian Ocean. This article is protected by copyright. All rights reserved. |
author2 |
China University of Geosciences Beijing 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)) Peking University Beijing Australian National University (ANU) |
format |
Article in Journal/Newspaper |
author |
Ding, Xuan Bassinot, Franck Pang, Xiaolei Kou, Yingxin Zhou, Liping |
author_facet |
Ding, Xuan Bassinot, Franck Pang, Xiaolei Kou, Yingxin Zhou, Liping |
author_sort |
Ding, Xuan |
title |
Heat transport processes of the Indonesian Throughflow along the outflow pathway in the eastern Indian Ocean during the last 160 kyr |
title_short |
Heat transport processes of the Indonesian Throughflow along the outflow pathway in the eastern Indian Ocean during the last 160 kyr |
title_full |
Heat transport processes of the Indonesian Throughflow along the outflow pathway in the eastern Indian Ocean during the last 160 kyr |
title_fullStr |
Heat transport processes of the Indonesian Throughflow along the outflow pathway in the eastern Indian Ocean during the last 160 kyr |
title_full_unstemmed |
Heat transport processes of the Indonesian Throughflow along the outflow pathway in the eastern Indian Ocean during the last 160 kyr |
title_sort |
heat transport processes of the indonesian throughflow along the outflow pathway in the eastern indian ocean during the last 160 kyr |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04196629 https://hal.science/hal-04196629/document https://hal.science/hal-04196629/file/Paleoceanog%20and%20Paleoclimatol%20-%202023%20-%20Ding%20-%20Heat%20Transport%20Processes%20of%20the%20Indonesian%20Throughflow%20Along%20the%20Outflow.pdf https://doi.org/10.1029/2023PA004620 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
ISSN: 2572-4525 EISSN: 1944-9186 Paleoceanography and Paleoclimatology https://hal.science/hal-04196629 Paleoceanography and Paleoclimatology, 2023, 38 (10), pp.e2023PA004620. ⟨10.1029/2023PA004620⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2023PA004620 hal-04196629 https://hal.science/hal-04196629 https://hal.science/hal-04196629/document https://hal.science/hal-04196629/file/Paleoceanog%20and%20Paleoclimatol%20-%202023%20-%20Ding%20-%20Heat%20Transport%20Processes%20of%20the%20Indonesian%20Throughflow%20Along%20the%20Outflow.pdf doi:10.1029/2023PA004620 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ |
op_doi |
https://doi.org/10.1029/2023PA004620 |
container_title |
Paleoceanography and Paleoclimatology |
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1810472697029722112 |
spelling |
ftceafr:oai:HAL:hal-04196629v1 2024-09-15T18:31:05+00:00 Heat transport processes of the Indonesian Throughflow along the outflow pathway in the eastern Indian Ocean during the last 160 kyr Ding, Xuan Bassinot, Franck Pang, Xiaolei Kou, Yingxin Zhou, Liping China University of Geosciences Beijing 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)) Peking University Beijing Australian National University (ANU) 2023 https://hal.science/hal-04196629 https://hal.science/hal-04196629/document https://hal.science/hal-04196629/file/Paleoceanog%20and%20Paleoclimatol%20-%202023%20-%20Ding%20-%20Heat%20Transport%20Processes%20of%20the%20Indonesian%20Throughflow%20Along%20the%20Outflow.pdf https://doi.org/10.1029/2023PA004620 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2023PA004620 hal-04196629 https://hal.science/hal-04196629 https://hal.science/hal-04196629/document https://hal.science/hal-04196629/file/Paleoceanog%20and%20Paleoclimatol%20-%202023%20-%20Ding%20-%20Heat%20Transport%20Processes%20of%20the%20Indonesian%20Throughflow%20Along%20the%20Outflow.pdf doi:10.1029/2023PA004620 http://hal.archives-ouvertes.fr/licences/copyright/ ISSN: 2572-4525 EISSN: 1944-9186 Paleoceanography and Paleoclimatology https://hal.science/hal-04196629 Paleoceanography and Paleoclimatology, 2023, 38 (10), pp.e2023PA004620. ⟨10.1029/2023PA004620⟩ [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 2023 ftceafr https://doi.org/10.1029/2023PA004620 2024-07-22T12:58:33Z International audience Abstract As the only low‐latitude connection along the return branch of the Great Conveyor Belt, the Indonesian Throughflow (ITF) plays an important role in the large‐scale ocean–atmosphere interaction in the tropical region. However, the heat transport processes of the ITF along the outflow pathway in the eastern Indian Ocean over the recent geologic period is still debated. In this study, by using Mg/Ca ratios of the surface‐dwelling and thermocline‐dwelling planktonic foraminifera Globigerinoides ruber and Pulleniatina obliquiloculata , we reconstruct surface and thermocline water temperatures and thermocline structure at two sites in the main outflow path of the ITF in the eastern Indian Ocean for the last 160 kyr, and compare these new data with those from two cores in the central Indo‐Pacific Warm Pool. Our results show that, on the orbital time scale, the thermocline structure changes above the equatorial 90°E Ridge mimic those of the eastern Timor Sea, indicating that the ITF vertical structure remained unchanged during its penetration into the Indian Ocean. The thermocline water temperature in the equatorial western Pacific and eastern Indian Ocean presents similar change trend, suggesting that ITF is likely to be an important route for thermocline water transport into the Indian Ocean. However, the vertical structure of the ITF varied through time, reflecting the effects of sea level and orbitally‐driven monsoonal activity. This impacted heat transport processes, resulting in changes in the surface water temperature along the outflow pathway in the eastern Indian Ocean. This article is protected by copyright. All rights reserved. Article in Journal/Newspaper Planktonic foraminifera HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Paleoceanography and Paleoclimatology |