Influences of Atlantic Ocean thermohaline circulation and Antarctic ice-sheet expansion on Pliocene deep Pacific carbonate chemistry

doi:10.1016/j.epsl.2022.117868

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

	Influences of Atlantic Ocean thermohaline circulation and Antarctic ice-sheet expansion on Pliocene deep Pacific carbonate chemistry
	Qin, Bingbin 1; Li, Tiegang 1,2; Xiong, Zhifang 1,2; Algeo, Thomas J.3,4; Jia, Qi 1; Nurnberg, Dirk 5; Shi, Jiangnan 6
刊名	EARTH AND PLANETARY SCIENCE LETTERS
	2022-12-01
卷号	599 页码:11
关键词	shell weight A[CO2-3 ] Panamanian Gateway glaciation atmosphericpCO2 Site U1490
ISSN号	0012-821X
DOI	10.1016/j.epsl.2022.117868
通讯作者	Li, Tiegang(tgli@fio.org.cn)
英文摘要	Quantifying changes in seawater carbonate chemistry is crucial to deciphering of patterns and drivers of the oceanic carbon cycle and climate change. Here, we present a new deep-water carbonate ion saturation state (A[CO2- 3 ]) record for the Pliocene western tropical Pacific, reconstructed from the size -normalized weight of the planktonic foraminifer Trilobatus sacculifer of IODP Site U1490. A steep decline in deep-water A[CO2- 3 ] occurred at similar to 4.6 Ma synchronous to the enhanced production of North Atlantic Deep Water (NADW) related to the closure of the Panamanian Gateway. Subsequently, at the onset of the Northern Hemisphere glaciation at similar to 2.7 Ma the weakening of NADW formation resulted in a deep -water A[CO2- 3 ] peak. The changes in NADW production rate likely controlled a seesaw-like fluctuation in deep-water A[CO2- 3 ] between the Pacific and Atlantic oceans. During the late Pliocene (similar to 3.8-2.8 Ma), Antarctic ice-sheet/sea-ice expansions sequestered CO2 in the deep Pacific through ventilation of the deep watermass, leading to a long-term decrease in deep Pacific A[CO2-3]. We infer that fluctuating NADW production rates at similar to 4.6 Ma and similar to 2.7 Ma influenced inter-basinal fractionation of deep-ocean carbon between the Atlantic and Pacific, and that deep Pacific carbon storage linked to expansions of Antarctic ice sheet/sea ice contributed to the lowering of atmospheric pCO2 and global cooling during the late Pliocene.(c) 2022 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China (NSFC)[41830539] ; Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao)[2022QNLM050203] ; Evaluation and Effect of Paleoclimatic Evolution[GASI-04-QYQH-04] ; NSFC[91858106] ; NSFC[41806084] ; NSFC[41906063] ; Taishan Scholars Project Funding[ts20190963] ; Basic Scientific Fund for National Public Research Institutes of China[2019S04] ; Basic Scientific Fund for National Public Research Institutes of China[2017Y07] ; Basic Scientific Fund for National Public Research Institutes of China[GY0222Q06]
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000880832000008
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/180295]
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.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Geol & Metallogeny, Qingdao 266061, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266237, Peoples R China 3.Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA 4.China Univ Geosci, State Key Labs Biogeol & Environm Geol & Geol Pr, Wuhan 430074, Peoples R China 5.GEOMAR Helmholtz Ctr Ocean Res Kiel, Wischhofstr 1-3, D-24148 Kiel, Germany 6.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Qin, Bingbin,Li, Tiegang,Xiong, Zhifang,et al. Influences of Atlantic Ocean thermohaline circulation and Antarctic ice-sheet expansion on Pliocene deep Pacific carbonate chemistry[J]. EARTH AND PLANETARY SCIENCE LETTERS,2022,599:11.
APA	Qin, Bingbin.,Li, Tiegang.,Xiong, Zhifang.,Algeo, Thomas J..,Jia, Qi.,...&Shi, Jiangnan.(2022).Influences of Atlantic Ocean thermohaline circulation and Antarctic ice-sheet expansion on Pliocene deep Pacific carbonate chemistry.EARTH AND PLANETARY SCIENCE LETTERS,599,11.
MLA	Qin, Bingbin,et al."Influences of Atlantic Ocean thermohaline circulation and Antarctic ice-sheet expansion on Pliocene deep Pacific carbonate chemistry".EARTH AND PLANETARY SCIENCE LETTERS 599(2022):11.