Thermocline dynamics in the northwestern tropical Pacific over the past 700 kyr

doi:10.1016/j.quascirev.2020.106465

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Thermocline dynamics in the northwestern tropical Pacific over the past 700 kyr
	Jia, Qi 8; Li, Tiegang 2,8; Xiong, Zhifang 2,8; Steinke, Stephan 6,7; Algeo, Thomas J.3,4,5; Jiang, Fuqing 1,2; Chang, Fengming 1,2; Qin, Bingbin 8
刊名	QUATERNARY SCIENCE REVIEWS
	2020-09-15
卷号	244 页码:16
关键词	Western philippine sea Western pacific warm pool WPWP delta O-18 Obliquity Thermocline depth
ISSN号	0277-3791
DOI	10.1016/j.quascirev.2020.106465
通讯作者	Li, Tiegang(tgli@fio.org.cn)
英文摘要	Variations in thermoclinal conditions play an important role in the evolution of the Western Pacific Warm Pool (WPWP) and in connecting the tropical and extratropical regions of the Pacific Ocean. However, secular thermoclinal changes in the northwestern part of the WPWP and their forcing mechanisms are not yet well understood, particularly on orbital timescales. In this study, we report thermoclinal variation at Site MD06-3047 B in the western Philippine Sea over the last 700 kyr. Our data show that variations in thermocline temperature and salinity in the study area were correlated with changes in Earth's obliquity, with warmer and saltier (colder and fresher) thermocline waters corresponding to high (low) Earth-axial obliquity. At high obliquity, increases in thermocline temperature and salinity may have been linked to advection of warm North Pacific tropical water. In the study area, a lower (higher) vertical temperature gradient in the upper water column suggests a deeper (shallower) thermocline during glacials (interglacials). The main factor leading to thermoclinal deepening during glacials was strengthening of the East Asian winter monsoon (EAWM), and more La Nina-like conditions may have contributed to concurrent subsurface warming and thus thermoclinal deepening. In-phase thermoclinal deepening in the northern and peri-equatorial southern WPWP during glacial stages may have been triggered by changes in glacial boundary conditions, such as increased ice sheet thickness, through intensification of the EAWM and strengthening of the tropical Trade Winds. (C) 2020 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[41830539] ; National Natural Science Foundation of China[41906063] ; National Natural Science Foundation of China[91858106] ; National Natural Science Foundation of China[41806084] ; National Natural Science Foundation of China[U1606401] ; Basic Scientific Fund for National Public Research Institutes of China[2019S04] ; Basic Scientific Fund for National Public Research Institutes of China[2017Y07] ; Taishan Scholars Project Funding[ts20190963] ; Open Fund of Qingdao National Laboratory for Marine Science and Technology[QNLM2016ORP0205] ; National Programme on Global Change and Air-Sea Interaction[GASIGEOGE-03] ; National Programme on Global Change and Air-Sea Interaction[GASI-GEOGE-04] ; Evaluation and Effect of Paleoclimatic Evolution[GASI-04-QYQH-04] ; China Postdoctoral Science Foundation[2019M662473] ; China Ocean Mineral Resources Research and Development Association Program[DY135-E2-1-01]
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000566884300002
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/168737]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Li, Tiegang
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 3.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China 4.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China 5.Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA 6.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen 361102, Peoples R China 7.Xiamen Univ, Dept Geol Oceanog, Xiamen 361102, Peoples R China 8.Minist Nat Resources, Inst Oceanog 1, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Jia, Qi,Li, Tiegang,Xiong, Zhifang,et al. Thermocline dynamics in the northwestern tropical Pacific over the past 700 kyr[J]. QUATERNARY SCIENCE REVIEWS,2020,244:16.
APA	Jia, Qi.,Li, Tiegang.,Xiong, Zhifang.,Steinke, Stephan.,Algeo, Thomas J..,...&Qin, Bingbin.(2020).Thermocline dynamics in the northwestern tropical Pacific over the past 700 kyr.QUATERNARY SCIENCE REVIEWS,244,16.
MLA	Jia, Qi,et al."Thermocline dynamics in the northwestern tropical Pacific over the past 700 kyr".QUATERNARY SCIENCE REVIEWS 244(2020):16.