Variations in the western Pacific warm pool across the mid-Pleistocene: Evidence from oxygen isotopes and coccoliths in the West Philippine Sea
We present planktonic foraminifera oxygen isotope and Florisphaera profunda abundance data from the International Marine Global Change Study Program (IMAGES) Core MD06-3050, which was collected in the West Philippine Sea on the margin of the Western Pacific Warm Pool (WPWP). Our records reveal marke...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | http://ir.qdio.ac.cn/handle/337002/143219 https://doi.org/10.1016/j.palaeo.2017.07.008 |
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/143219 2023-05-15T18:01:12+02:00 Variations in the western Pacific warm pool across the mid-Pleistocene: Evidence from oxygen isotopes and coccoliths in the West Philippine Sea Sun, Hanjie Li, Tiegang Liu, Chuanlian Chang, Fengming Sun, Rongtao Xiong, Zhifang An, Baizheng 2017-10-01 http://ir.qdio.ac.cn/handle/337002/143219 https://doi.org/10.1016/j.palaeo.2017.07.008 英语 eng PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY Sun, Hanjie,Li, Tiegang,Liu, Chuanlian,et al. Variations in the western Pacific warm pool across the mid-Pleistocene: Evidence from oxygen isotopes and coccoliths in the West Philippine Sea[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2017,483:157-171. http://ir.qdio.ac.cn/handle/337002/143219 doi:10.1016/j.palaeo.2017.07.008 West Philippine Sea Upper Water Structure Florisphaera Profunda Planktonic Foraminiferal Oxygen Isotope Wpwp Article 期刊论文 2017 ftchinacasciocas https://doi.org/10.1016/j.palaeo.2017.07.008 2022-06-27T05:38:13Z We present planktonic foraminifera oxygen isotope and Florisphaera profunda abundance data from the International Marine Global Change Study Program (IMAGES) Core MD06-3050, which was collected in the West Philippine Sea on the margin of the Western Pacific Warm Pool (WPWP). Our records reveal marked changes in the upper water structure in the Kuroshio source region as early as 1.5 Ma, continuing through the mid-Pleistocene climate transition (MPT). These changes are evidenced by reconstructions of the thermocline (based on planktonic foraminiferal oxygen isotope differences) and the nutricline (based on the relative abundance of the coccolithophore species Florisphaera profunda) in the Kuroshio source region. The evolution of the thermocline/nutricline featured three prominent phases: 1) phase I (1.5-1.1 Ma), which was characterized by low-amplitude variations in a shallow thermocline; 2) phase II (1.1-0.8 Ma), which was characterized by high-amplitude variations in a relatively shallow thermocline/nutricline; and 3) phase III (0.8-0.5 Ma), which was characterized by low-amplitude variations in a deep thermocline/nutricline. Combined with the zonal sea surface temperature gradient in the tropical Pacific, the evolution of the upper water structure can be linked to tropical climatic changes across the MPT, including the intensification of atmospheric circulation and a gradual cessation of the long-term El Nino-like state. The upper water structure of the WPWP was asymmetric before 0.8 Ma, with a shallow thermocline/nutricline along the northern margin and a deep thermocline/nutricline in the center of the WPWP and South China Sea (SCS). The modern WPWP was established by approximately 0.8 Ma, and the upper water structure has changed synchronously as a whole since that time. A comparison of the delta O-18 values derived from Globigerinoides ruber tests from the MD06-3050 core with those from other cores in the western Pacific suggests that the lower glacial/interglacial G. ruber delta O-18 values in MD06-3050 ... Article in Journal/Newspaper Planktonic foraminifera Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Pacific Palaeogeography, Palaeoclimatology, Palaeoecology 483 157 171 |
institution |
Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
West Philippine Sea Upper Water Structure Florisphaera Profunda Planktonic Foraminiferal Oxygen Isotope Wpwp |
spellingShingle |
West Philippine Sea Upper Water Structure Florisphaera Profunda Planktonic Foraminiferal Oxygen Isotope Wpwp Sun, Hanjie Li, Tiegang Liu, Chuanlian Chang, Fengming Sun, Rongtao Xiong, Zhifang An, Baizheng Variations in the western Pacific warm pool across the mid-Pleistocene: Evidence from oxygen isotopes and coccoliths in the West Philippine Sea |
topic_facet |
West Philippine Sea Upper Water Structure Florisphaera Profunda Planktonic Foraminiferal Oxygen Isotope Wpwp |
description |
We present planktonic foraminifera oxygen isotope and Florisphaera profunda abundance data from the International Marine Global Change Study Program (IMAGES) Core MD06-3050, which was collected in the West Philippine Sea on the margin of the Western Pacific Warm Pool (WPWP). Our records reveal marked changes in the upper water structure in the Kuroshio source region as early as 1.5 Ma, continuing through the mid-Pleistocene climate transition (MPT). These changes are evidenced by reconstructions of the thermocline (based on planktonic foraminiferal oxygen isotope differences) and the nutricline (based on the relative abundance of the coccolithophore species Florisphaera profunda) in the Kuroshio source region. The evolution of the thermocline/nutricline featured three prominent phases: 1) phase I (1.5-1.1 Ma), which was characterized by low-amplitude variations in a shallow thermocline; 2) phase II (1.1-0.8 Ma), which was characterized by high-amplitude variations in a relatively shallow thermocline/nutricline; and 3) phase III (0.8-0.5 Ma), which was characterized by low-amplitude variations in a deep thermocline/nutricline. Combined with the zonal sea surface temperature gradient in the tropical Pacific, the evolution of the upper water structure can be linked to tropical climatic changes across the MPT, including the intensification of atmospheric circulation and a gradual cessation of the long-term El Nino-like state. The upper water structure of the WPWP was asymmetric before 0.8 Ma, with a shallow thermocline/nutricline along the northern margin and a deep thermocline/nutricline in the center of the WPWP and South China Sea (SCS). The modern WPWP was established by approximately 0.8 Ma, and the upper water structure has changed synchronously as a whole since that time. A comparison of the delta O-18 values derived from Globigerinoides ruber tests from the MD06-3050 core with those from other cores in the western Pacific suggests that the lower glacial/interglacial G. ruber delta O-18 values in MD06-3050 ... |
format |
Article in Journal/Newspaper |
author |
Sun, Hanjie Li, Tiegang Liu, Chuanlian Chang, Fengming Sun, Rongtao Xiong, Zhifang An, Baizheng |
author_facet |
Sun, Hanjie Li, Tiegang Liu, Chuanlian Chang, Fengming Sun, Rongtao Xiong, Zhifang An, Baizheng |
author_sort |
Sun, Hanjie |
title |
Variations in the western Pacific warm pool across the mid-Pleistocene: Evidence from oxygen isotopes and coccoliths in the West Philippine Sea |
title_short |
Variations in the western Pacific warm pool across the mid-Pleistocene: Evidence from oxygen isotopes and coccoliths in the West Philippine Sea |
title_full |
Variations in the western Pacific warm pool across the mid-Pleistocene: Evidence from oxygen isotopes and coccoliths in the West Philippine Sea |
title_fullStr |
Variations in the western Pacific warm pool across the mid-Pleistocene: Evidence from oxygen isotopes and coccoliths in the West Philippine Sea |
title_full_unstemmed |
Variations in the western Pacific warm pool across the mid-Pleistocene: Evidence from oxygen isotopes and coccoliths in the West Philippine Sea |
title_sort |
variations in the western pacific warm pool across the mid-pleistocene: evidence from oxygen isotopes and coccoliths in the west philippine sea |
publishDate |
2017 |
url |
http://ir.qdio.ac.cn/handle/337002/143219 https://doi.org/10.1016/j.palaeo.2017.07.008 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY Sun, Hanjie,Li, Tiegang,Liu, Chuanlian,et al. Variations in the western Pacific warm pool across the mid-Pleistocene: Evidence from oxygen isotopes and coccoliths in the West Philippine Sea[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2017,483:157-171. http://ir.qdio.ac.cn/handle/337002/143219 doi:10.1016/j.palaeo.2017.07.008 |
op_doi |
https://doi.org/10.1016/j.palaeo.2017.07.008 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
483 |
container_start_page |
157 |
op_container_end_page |
171 |
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1766170578133188608 |