Variations in temperature and salinity of the surface water above the middle Okinawa Trough during the past 37 kyr
East China Sea (ECS) is an important climate modulator of East Asia. In the last glacial period, the global sea level, the path and strength of the Kuroshio Current experienced great changes; combined with the variable volume of fresh run-off input, they made the hydrographic situation in the ECS qu...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Language: | English |
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Online Access: | https://archimer.ifremer.fr/doc/2009/publication-7398.pdf https://doi.org/10.1016/j.palaeo.2009.08.002 https://archimer.ifremer.fr/doc/00000/7398/ |
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ftarchimer:oai:archimer.ifremer.fr:7398 2023-05-15T16:39:27+02:00 Variations in temperature and salinity of the surface water above the middle Okinawa Trough during the past 37 kyr Yu, Hua Liu, Zhenxia Berne, Serge Jia, Guodong Xiong, Yingqian Dickens, Gerald R. Wei, Gangjian Shi, Xuefa Liu, J. Paul Chen, Fajin 2009-10 application/pdf https://archimer.ifremer.fr/doc/2009/publication-7398.pdf https://doi.org/10.1016/j.palaeo.2009.08.002 https://archimer.ifremer.fr/doc/00000/7398/ eng eng Elsevier https://archimer.ifremer.fr/doc/2009/publication-7398.pdf doi:10.1016/j.palaeo.2009.08.002 https://archimer.ifremer.fr/doc/00000/7398/ 2009 Elsevier B.V. All rights reserved. info:eu-repo/semantics/openAccess restricted use Palaeogeography, Palaeoclimatology, Palaeoecology (0031-0182) (Elsevier), 2009-10 , Vol. 281 , N. 1-2 , P. 154-164 Sea surface salinity Sea surface temperature East Asian monsoon Kuroshio Current Okinawa Trough East China Sea text Publication info:eu-repo/semantics/article 2009 ftarchimer https://doi.org/10.1016/j.palaeo.2009.08.002 2021-09-23T20:17:55Z East China Sea (ECS) is an important climate modulator of East Asia. In the last glacial period, the global sea level, the path and strength of the Kuroshio Current experienced great changes; combined with the variable volume of fresh run-off input, they made the hydrographic situation in the ECS quite different from nowadays. Based on high-resolution alkenone-sea surface temperature (SST) and oxygen isotope composition of planktonic foraminifera Globigerinoides sacculifer we reconstructed paleo-sea surface salinity (SSS) of a long piston core DGKS9604 retrieved from the middle Okinawa Trough of the eastern ECS. The delta O-18 and SST records display significant variations with global ice volume. Synchrony of the millennial-scale climate events like YD and Heinrich events of core DGKS9604 to the ice core from the northern high latitudes. and the synchroneity of deglacial warming with the Bolling-Allerod warming suggests a strong coupling of the SST variations in the marginal Pacific Ocean to the climate of the North Atlantic, most likely through the Asian monsoon atmospheric circulation. The ECS documents lowest SST (22 degrees C) at similar to 26 cal kyr BP and similar to 3 degrees C SST difference between the full glaciation (26 to 19 cal kyr BP) and mid-to-late Holocene (6 cal kyr BP-present). The overall long-term hydrographic variations in the middle Okinawa Trough are controlled by temporal and spatial variations in: (i) the intensity and position of the Kuroshio Current, (ii) intensity of the Asian summer monsoon and (iii) sea-level fluctuations coupled with ECS topography. Saline surface water dominated over the middle Okinawa Trough during early pre-glaciation (37 to 31 cal kyr BP), last deglaciation (19 to 11.6 cal kyr BP), and mid-to-late Holocene (6 cal kyr BP-present), whilst freshened surface water prevailed during the late pre-glaciation (31 to 26 cal kyr BP), full glaciation (26 to 19 cal kyr BP) and early Holocene (11.6 to 6 cal kyr BP). (C) 2009 Elsevier B.V. All rights reserved. Article in Journal/Newspaper ice core North Atlantic Planktonic foraminifera Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Pacific Palaeogeography, Palaeoclimatology, Palaeoecology 281 1-2 154 164 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Sea surface salinity Sea surface temperature East Asian monsoon Kuroshio Current Okinawa Trough East China Sea |
spellingShingle |
Sea surface salinity Sea surface temperature East Asian monsoon Kuroshio Current Okinawa Trough East China Sea Yu, Hua Liu, Zhenxia Berne, Serge Jia, Guodong Xiong, Yingqian Dickens, Gerald R. Wei, Gangjian Shi, Xuefa Liu, J. Paul Chen, Fajin Variations in temperature and salinity of the surface water above the middle Okinawa Trough during the past 37 kyr |
topic_facet |
Sea surface salinity Sea surface temperature East Asian monsoon Kuroshio Current Okinawa Trough East China Sea |
description |
East China Sea (ECS) is an important climate modulator of East Asia. In the last glacial period, the global sea level, the path and strength of the Kuroshio Current experienced great changes; combined with the variable volume of fresh run-off input, they made the hydrographic situation in the ECS quite different from nowadays. Based on high-resolution alkenone-sea surface temperature (SST) and oxygen isotope composition of planktonic foraminifera Globigerinoides sacculifer we reconstructed paleo-sea surface salinity (SSS) of a long piston core DGKS9604 retrieved from the middle Okinawa Trough of the eastern ECS. The delta O-18 and SST records display significant variations with global ice volume. Synchrony of the millennial-scale climate events like YD and Heinrich events of core DGKS9604 to the ice core from the northern high latitudes. and the synchroneity of deglacial warming with the Bolling-Allerod warming suggests a strong coupling of the SST variations in the marginal Pacific Ocean to the climate of the North Atlantic, most likely through the Asian monsoon atmospheric circulation. The ECS documents lowest SST (22 degrees C) at similar to 26 cal kyr BP and similar to 3 degrees C SST difference between the full glaciation (26 to 19 cal kyr BP) and mid-to-late Holocene (6 cal kyr BP-present). The overall long-term hydrographic variations in the middle Okinawa Trough are controlled by temporal and spatial variations in: (i) the intensity and position of the Kuroshio Current, (ii) intensity of the Asian summer monsoon and (iii) sea-level fluctuations coupled with ECS topography. Saline surface water dominated over the middle Okinawa Trough during early pre-glaciation (37 to 31 cal kyr BP), last deglaciation (19 to 11.6 cal kyr BP), and mid-to-late Holocene (6 cal kyr BP-present), whilst freshened surface water prevailed during the late pre-glaciation (31 to 26 cal kyr BP), full glaciation (26 to 19 cal kyr BP) and early Holocene (11.6 to 6 cal kyr BP). (C) 2009 Elsevier B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Yu, Hua Liu, Zhenxia Berne, Serge Jia, Guodong Xiong, Yingqian Dickens, Gerald R. Wei, Gangjian Shi, Xuefa Liu, J. Paul Chen, Fajin |
author_facet |
Yu, Hua Liu, Zhenxia Berne, Serge Jia, Guodong Xiong, Yingqian Dickens, Gerald R. Wei, Gangjian Shi, Xuefa Liu, J. Paul Chen, Fajin |
author_sort |
Yu, Hua |
title |
Variations in temperature and salinity of the surface water above the middle Okinawa Trough during the past 37 kyr |
title_short |
Variations in temperature and salinity of the surface water above the middle Okinawa Trough during the past 37 kyr |
title_full |
Variations in temperature and salinity of the surface water above the middle Okinawa Trough during the past 37 kyr |
title_fullStr |
Variations in temperature and salinity of the surface water above the middle Okinawa Trough during the past 37 kyr |
title_full_unstemmed |
Variations in temperature and salinity of the surface water above the middle Okinawa Trough during the past 37 kyr |
title_sort |
variations in temperature and salinity of the surface water above the middle okinawa trough during the past 37 kyr |
publisher |
Elsevier |
publishDate |
2009 |
url |
https://archimer.ifremer.fr/doc/2009/publication-7398.pdf https://doi.org/10.1016/j.palaeo.2009.08.002 https://archimer.ifremer.fr/doc/00000/7398/ |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
ice core North Atlantic Planktonic foraminifera |
genre_facet |
ice core North Atlantic Planktonic foraminifera |
op_source |
Palaeogeography, Palaeoclimatology, Palaeoecology (0031-0182) (Elsevier), 2009-10 , Vol. 281 , N. 1-2 , P. 154-164 |
op_relation |
https://archimer.ifremer.fr/doc/2009/publication-7398.pdf doi:10.1016/j.palaeo.2009.08.002 https://archimer.ifremer.fr/doc/00000/7398/ |
op_rights |
2009 Elsevier B.V. All rights reserved. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.palaeo.2009.08.002 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
281 |
container_issue |
1-2 |
container_start_page |
154 |
op_container_end_page |
164 |
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1766029790847959040 |