East Asian monsoon forcing of suborbital variability in the Sulu Sea during Marine Isotope Stage 3: Link to Northern Hemisphere climate
We have generated a new high-resolution record of variations in planktonic foraminiferal oxygen isotopes (delta(18)O) and Mg/Ca from a sediment core (IMAGES 97-2141) in the Sulu Sea located in the Philippine archipelago of western tropical Pacific. This record reveals distinct, suborbital-scale delt...
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Amer Geophysical Union
2003
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Online Access: | https://archimer.ifremer.fr/doc/00226/33681/32046.pdf https://doi.org/10.1029/2002GC000390 https://archimer.ifremer.fr/doc/00226/33681/ |
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ftarchimer:oai:archimer.ifremer.fr:33681 2023-05-15T16:30:17+02:00 East Asian monsoon forcing of suborbital variability in the Sulu Sea during Marine Isotope Stage 3: Link to Northern Hemisphere climate Dannenmann, S Linsley, Bk Oppo, Dw Rosenthal, Y Beaufort, L 2003-01-02 application/pdf https://archimer.ifremer.fr/doc/00226/33681/32046.pdf https://doi.org/10.1029/2002GC000390 https://archimer.ifremer.fr/doc/00226/33681/ eng eng Amer Geophysical Union https://archimer.ifremer.fr/doc/00226/33681/32046.pdf doi:10.1029/2002GC000390 https://archimer.ifremer.fr/doc/00226/33681/ Copyright 2003 by the American Geophysical Union info:eu-repo/semantics/openAccess restricted use Geochemistry Geophysics Geosystems (1525-2027) (Amer Geophysical Union), 2003-01-02 , Vol. 4 , N. 1 , P. 1-13 paleoceanography isotope stage 3 SE Asian Monsoon Mg/Ca oxygen isotopes millennial-scale climate change climate dynamics text Publication info:eu-repo/semantics/article 2003 ftarchimer https://doi.org/10.1029/2002GC000390 2021-09-23T20:25:10Z We have generated a new high-resolution record of variations in planktonic foraminiferal oxygen isotopes (delta(18)O) and Mg/Ca from a sediment core (IMAGES 97-2141) in the Sulu Sea located in the Philippine archipelago of western tropical Pacific. This record reveals distinct, suborbital-scale delta(18)O changes, most notably during Marine Isotope Stage 3 (MIS3) (similar to30,000 to 60,000 years B.P.). The amplitudes of these delta(18)O fluctuations (0.4 to 0.7parts per thousand) exceed that which can be attributed to sea level changes and must be due to changes in sea surface conditions. In the same interval, variations in planktonic foraminifera Mg/Ca suggest that suborbital surface ocean temperature variations of 1 to 1.5degreesC in the Sulu Sea were not in phase with delta(18)O. Combined, this evidence indicates that the MIS3 millennial delta(18)O events in the Sulu Sea were primarily the result of changes in surface water salinity, which today is directly related to the East Asian Monsoon (EAM) and its influence on the balance between surface water contributions from the South China Sea and Western Pacific Warm Pool (WPWP). Within dating uncertainties the MIS3 Sulu Sea delta(18)O suborbital variability indicates that times of fresher surface conditions in the Sulu Sea coincide with similar conditions in the WPWP [Stott et al., 2002] and also with intensifications of the summer EAM as recorded in the U-Th dated Chinese (Hulu Cave) speleothem delta(18)O record [Wang et al., 2001] and thus by inference with interstadials in the Greenland Ice core records. Combined, these results indicate that pronounced suborbital variability in the summer EAM and Intertropical Convergence Zone (ITCZ) during MIS3 was tightly coupled with climate conditions in the northern high latitudes. Article in Journal/Newspaper Greenland Greenland ice core ice core Planktonic foraminifera Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Greenland Hulu ENVELOPE(8.610,8.610,62.837,62.837) Pacific Geochemistry, Geophysics, Geosystems 4 1 1 13 |
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 |
paleoceanography isotope stage 3 SE Asian Monsoon Mg/Ca oxygen isotopes millennial-scale climate change climate dynamics |
spellingShingle |
paleoceanography isotope stage 3 SE Asian Monsoon Mg/Ca oxygen isotopes millennial-scale climate change climate dynamics Dannenmann, S Linsley, Bk Oppo, Dw Rosenthal, Y Beaufort, L East Asian monsoon forcing of suborbital variability in the Sulu Sea during Marine Isotope Stage 3: Link to Northern Hemisphere climate |
topic_facet |
paleoceanography isotope stage 3 SE Asian Monsoon Mg/Ca oxygen isotopes millennial-scale climate change climate dynamics |
description |
We have generated a new high-resolution record of variations in planktonic foraminiferal oxygen isotopes (delta(18)O) and Mg/Ca from a sediment core (IMAGES 97-2141) in the Sulu Sea located in the Philippine archipelago of western tropical Pacific. This record reveals distinct, suborbital-scale delta(18)O changes, most notably during Marine Isotope Stage 3 (MIS3) (similar to30,000 to 60,000 years B.P.). The amplitudes of these delta(18)O fluctuations (0.4 to 0.7parts per thousand) exceed that which can be attributed to sea level changes and must be due to changes in sea surface conditions. In the same interval, variations in planktonic foraminifera Mg/Ca suggest that suborbital surface ocean temperature variations of 1 to 1.5degreesC in the Sulu Sea were not in phase with delta(18)O. Combined, this evidence indicates that the MIS3 millennial delta(18)O events in the Sulu Sea were primarily the result of changes in surface water salinity, which today is directly related to the East Asian Monsoon (EAM) and its influence on the balance between surface water contributions from the South China Sea and Western Pacific Warm Pool (WPWP). Within dating uncertainties the MIS3 Sulu Sea delta(18)O suborbital variability indicates that times of fresher surface conditions in the Sulu Sea coincide with similar conditions in the WPWP [Stott et al., 2002] and also with intensifications of the summer EAM as recorded in the U-Th dated Chinese (Hulu Cave) speleothem delta(18)O record [Wang et al., 2001] and thus by inference with interstadials in the Greenland Ice core records. Combined, these results indicate that pronounced suborbital variability in the summer EAM and Intertropical Convergence Zone (ITCZ) during MIS3 was tightly coupled with climate conditions in the northern high latitudes. |
format |
Article in Journal/Newspaper |
author |
Dannenmann, S Linsley, Bk Oppo, Dw Rosenthal, Y Beaufort, L |
author_facet |
Dannenmann, S Linsley, Bk Oppo, Dw Rosenthal, Y Beaufort, L |
author_sort |
Dannenmann, S |
title |
East Asian monsoon forcing of suborbital variability in the Sulu Sea during Marine Isotope Stage 3: Link to Northern Hemisphere climate |
title_short |
East Asian monsoon forcing of suborbital variability in the Sulu Sea during Marine Isotope Stage 3: Link to Northern Hemisphere climate |
title_full |
East Asian monsoon forcing of suborbital variability in the Sulu Sea during Marine Isotope Stage 3: Link to Northern Hemisphere climate |
title_fullStr |
East Asian monsoon forcing of suborbital variability in the Sulu Sea during Marine Isotope Stage 3: Link to Northern Hemisphere climate |
title_full_unstemmed |
East Asian monsoon forcing of suborbital variability in the Sulu Sea during Marine Isotope Stage 3: Link to Northern Hemisphere climate |
title_sort |
east asian monsoon forcing of suborbital variability in the sulu sea during marine isotope stage 3: link to northern hemisphere climate |
publisher |
Amer Geophysical Union |
publishDate |
2003 |
url |
https://archimer.ifremer.fr/doc/00226/33681/32046.pdf https://doi.org/10.1029/2002GC000390 https://archimer.ifremer.fr/doc/00226/33681/ |
long_lat |
ENVELOPE(8.610,8.610,62.837,62.837) |
geographic |
Greenland Hulu Pacific |
geographic_facet |
Greenland Hulu Pacific |
genre |
Greenland Greenland ice core ice core Planktonic foraminifera |
genre_facet |
Greenland Greenland ice core ice core Planktonic foraminifera |
op_source |
Geochemistry Geophysics Geosystems (1525-2027) (Amer Geophysical Union), 2003-01-02 , Vol. 4 , N. 1 , P. 1-13 |
op_relation |
https://archimer.ifremer.fr/doc/00226/33681/32046.pdf doi:10.1029/2002GC000390 https://archimer.ifremer.fr/doc/00226/33681/ |
op_rights |
Copyright 2003 by the American Geophysical Union info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1029/2002GC000390 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
4 |
container_issue |
1 |
container_start_page |
1 |
op_container_end_page |
13 |
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1766020006178455552 |