Coupled nutricline and productivity variations during the Pliocene in the western Pacific warm pool and their paleoceanographic implications

doi:10.1016/j.gloplacha.2022.103810

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

	Coupled nutricline and productivity variations during the Pliocene in the western Pacific warm pool and their paleoceanographic implications
	Shi, Jiangnan 1,5; Jia, Qi 2; Nuernberg, Dirk 3; Li, Tiegang 2,4; Xiong, Zhifang 2,4; Qin, Bingbin 2
刊名	GLOBAL AND PLANETARY CHANGE
	2022-05-01
卷号	212 页码:13
关键词	Western tropical Pacific Nutrient structure Carbon isotope gradient Central American Seaway Indonesian Seaway
ISSN号	0921-8181
DOI	10.1016/j.gloplacha.2022.103810
通讯作者	Li, Tiegang(tgli@fio.org.cn)
英文摘要	The tropical Pacific played an important role in modulating global climate change during the Pliocene. Studies of tropical Pacific sea surface temperatures covering the period from the Pliocene onwards indicate that changes in the thermal mean state over the tropical Pacific can significantly influence global climate feedbacks and connect the high- and low-latitude climates. Tropical productivity fluctuations are a significant mechanism with respect to the operation of the global carbon cycle. Yet, temporal changes in primary productivity are not well constrained in the western Pacific warm pool (WPWP), where the ocean-climate system is not dominated by upwelling systems. Furthermore, the role of nutricline dynamics in forcing productivity over tectonic timescales remains uncertain. Here we use relatively high-resolution foraminiferal carbon isotope records combined with Ba/Ti ratios obtained from International Ocean Discovery Program (IODP) Site U1490 in the WPWP to reconstruct nutricline depth and paleoproductivity over the period 5.1-2.6 Ma. Our records imply that nutricline and productivity variations were closely coupled over tectonic timescales, implying that the dynamics of the nutricline play a significant role in regulating productivity in the WPWP. The deeper nutricline and lower productivity during 4.8-3.5 Ma might have been fostered by the closure of the Central American Seaway through the thickening of the mixed layer in the WPWP. We relate the overall shallower nutricline and increased productivity during 3.5-3.0 Ma to the restriction of the Indonesian Seaway via the enhanced influence and upwelling of highlatitude southern-source waters.
资助项目	National Natural Science Foundation of China (NSFC)[41830539] ; National Natural Science Foundation of China (NSFC)[91858106] ; Evaluation and Effect of Paleoclimatic Evolution[GASI04-QYQH-04] ; NSFC[41906063] ; NSFC[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] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; Qingdao Postdoctoral Applied Research Project[2019M662473]
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000889981800005
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/180213]
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.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Geol & Metallogeny, Qingdao 266061, Peoples R China 3.GEOMAR Helmholtz Ctr Ocean Res Kiel, Wischhofstr I-3, D-24148 Kiel, Germany 4.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266237, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Shi, Jiangnan,Jia, Qi,Nuernberg, Dirk,et al. Coupled nutricline and productivity variations during the Pliocene in the western Pacific warm pool and their paleoceanographic implications[J]. GLOBAL AND PLANETARY CHANGE,2022,212:13.
APA	Shi, Jiangnan,Jia, Qi,Nuernberg, Dirk,Li, Tiegang,Xiong, Zhifang,&Qin, Bingbin.(2022).Coupled nutricline and productivity variations during the Pliocene in the western Pacific warm pool and their paleoceanographic implications.GLOBAL AND PLANETARY CHANGE,212,13.
MLA	Shi, Jiangnan,et al."Coupled nutricline and productivity variations during the Pliocene in the western Pacific warm pool and their paleoceanographic implications".GLOBAL AND PLANETARY CHANGE 212(2022):13.