| Palaeoproductivity evolution in the centre of the western Pacific warm pool during the last 250 ka | |
Li, Tiegang1 ; Zhao, Jingtao2,3; Nan, Qingyun1; Sun, Rongtao4; Yu, Xinke1; Li, TG (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
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| 2011-07-01 | |
| 发表期刊 | JOURNAL OF QUATERNARY SCIENCE
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| ISSN | 0267-8179 |
| 卷号 | 26期号:5页码:478-484 |
| 文章类型 | Article |
| 摘要 | To reconstruct the palaeoproductivity evolution history of the centre of the western Pacific warm pool (WPWP) over the last 250 ka, multi-proxies were analysed in sediment core WP7 recovered from the Ontong Java Plateau. Palaeoproductivity evolution at the centre of the WPWP during the last 250 ka is closely related to glacial interglacial cycles and the insolation controlled by precession. The glacial higher primary productivity relative to the interglacial conditions could have resulted from both thermocline shoaling associated with persistent El Nino-like conditions and the increased influx of dust resulting from intensified winter monsoon together with important changes in the thermocline. The minimum primary productivity values during the last three terminations could be resulted from deglacial thermocline deepening and intensified stratification associated with persistent La Nina-like conditions, and the concurrent Neogloboquadrina dutertrei delta C-13 minimum events probably reflect the chemical signatures of Subantarctic Mode Water and Antarctic Intermediate Water. In addition, primary productivity values are also controlled by the thermocline variations resulting from El Nino/La Nina-Southern Oscillation processes responding to precession forcing, and lead the delta O-18 by about 4 ka. The 33.1 ka, 19 ka and "half-precession" periods are prominent in the palaeoproductivity records. Copyright (C) 2011 John Wiley & Sons, Ltd.; To reconstruct the palaeoproductivity evolution history of the centre of the western Pacific warm pool (WPWP) over the last 250 ka, multi-proxies were analysed in sediment core WP7 recovered from the Ontong Java Plateau. Palaeoproductivity evolution at the centre of the WPWP during the last 250 ka is closely related to glacial interglacial cycles and the insolation controlled by precession. The glacial higher primary productivity relative to the interglacial conditions could have resulted from both thermocline shoaling associated with persistent El Nino-like conditions and the increased influx of dust resulting from intensified winter monsoon together with important changes in the thermocline. The minimum primary productivity values during the last three terminations could be resulted from deglacial thermocline deepening and intensified stratification associated with persistent La Nina-like conditions, and the concurrent Neogloboquadrina dutertrei delta(13)C minimum events probably reflect the chemical signatures of Subantarctic Mode Water and Antarctic Intermediate Water. In addition, primary productivity values are also controlled by the thermocline variations resulting from El Nino/La Nina-Southern Oscillation processes responding to precession forcing, and lead the delta(18)O by about 4 ka. The 33.1 ka, 19 ka and "half-precession" periods are prominent in the palaeoproductivity records. Copyright (C) 2011 John Wiley & Sons, Ltd. |
| 关键词 | Earth's Orbital Period Palaeo-enso Palaeoproductivity Western Pacific Warm Pool |
| 学科领域 | Geology ; Paleontology |
| DOI | 10.1002/jqs.1471 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000293098300005 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/11509 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Li, TG (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Minist Land & Resources, Key Lab Marine Hydrocarbon Resources & Environm G, Qingdao 266071, Peoples R China 3.Minist Land & Resources, Qingdao Inst Marine Geol, Qingdao 266071, Peoples R China 4.Shandong Univ Technol, Sch Resources & Environm Engn, Zibo 255049, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Li, Tiegang,Zhao, Jingtao,Nan, Qingyun,et al. Palaeoproductivity evolution in the centre of the western Pacific warm pool during the last 250 ka[J]. JOURNAL OF QUATERNARY SCIENCE,2011,26(5):478-484. |
| APA | Li, Tiegang,Zhao, Jingtao,Nan, Qingyun,Sun, Rongtao,Yu, Xinke,&Li, TG .(2011).Palaeoproductivity evolution in the centre of the western Pacific warm pool during the last 250 ka.JOURNAL OF QUATERNARY SCIENCE,26(5),478-484. |
| MLA | Li, Tiegang,et al."Palaeoproductivity evolution in the centre of the western Pacific warm pool during the last 250 ka".JOURNAL OF QUATERNARY SCIENCE 26.5(2011):478-484. |
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