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

IOCAS-IR > 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, Qi2 ; Nuernberg, Dirk 3; Li, Tiegang2,4 ; Xiong, Zhifang 2,4; Qin, Bingbin2
	2022-05-01
发表期刊	GLOBAL AND PLANETARY CHANGE
ISSN	0921-8181
卷号	212 页码:13
通讯作者	Li, Tiegang(tgli@fio.org.cn)
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.
关键词	Western tropical Pacific Nutrient structure Carbon isotope gradient Central American Seaway Indonesian Seaway
DOI	10.1016/j.gloplacha.2022.103810
收录类别	SCI
语种	英语
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
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000889981800005
出版者	ELSEVIER
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/180214
专题	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
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	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.