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Deep-Water Formation in the North Pacific During the Late Miocene Global Cooling

文献类型：期刊论文

作者Zhai, Lina4,5; Wan, Shiming5,6,7; Colin, Christophe8; Zhao, Debo5; Ye, Yuntao1; Song, Zhaojun2; Yin, Xuebo5; Shi, Xuefa3; Li, Anchun5
刊名PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
出版日期2021-02-01
卷号36期号:2页码:16
关键词deep‐ water ventilation Japan Sea late Miocene cooling North Pacific primary productivity
ISSN号2572-4517
DOI10.1029/2020PA003946
通讯作者Wan, Shiming(wanshiming@ms.qdio.ac.cn)
英文摘要A multiproxy study including organic carbon and bulk nitrogen isotopes along with major and trace element concentrations in sediments from Integrated Ocean Drilling Program (IODP) Sites U1425 and U1430 in the Japan Sea have been conducted in order to trace deep-water evolution in the Japan Sea and the North Pacific since the late Miocene. The high total organic carbon (TOC) flux, as well as other published geochemical and sedimentary evidence, indicates the occurrence of anoxic deep-water in the Japan Sea before similar to 7.4 Ma. The low-nitrogen isotope values probably suggest nearly complete denitrification. In contrast, the sharply enhanced biological production but decreased burial of organic matter during similar to 7.4-4 Ma, as shown by high enrichment factor of Ba (Ba-EF) values, together with low TOC flux, highlights enhanced deep-water oxygenation in the Japan Sea during that time. We suggest that deep-water formation in the North Pacific ventilated the deep Japan Sea via northern deep seaways before the sea became semi-closed in the early Pliocene. The synchronously increased equator-to-pole temperature gradients driven by late Miocene global cooling may have caused southward shift of mid-latitude storm tracks, coupled with the weakened East Asian summer monsoon and moisture transport, leading to decreased precipitation in mid-latitude regions. The potential increases in surface salinity in the North Pacific may have broken the ocean stratification and favored deep-water formation, and further caused deep-water ventilation in the Japan Sea.
资助项目National Natural Science Foundation of China[42076052] ; National Natural Science Foundation of China[41622603] ; National Natural Science Foundation of China[41576034] ; National Natural Science Foundation of China[U1606401] ; National Natural Science Foundation of China[41806058] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB40010100] ; Open Fund of the Key Laboratory of Marine Geology and Environment, CAS[MGE2019KG15] ; Taishan and Aoshan Talents Program[2017ASTCPES01] ; China Postdoctoral Science Foundation[2018M632729] ; [2016ASKJ13] ; [MGQNLM-TD201805] ; [MGQNLM-KF202001]
WOS研究方向Geology ; Oceanography ; Paleontology
语种英语
WOS记录号WOS:000624116800002
出版者AMER GEOPHYSICAL UNION
源URL[http://ir.qdio.ac.cn/handle/337002/170163]  
专题海洋研究所_海洋地质与环境重点实验室
通讯作者Wan, Shiming
作者单位1.China Natl Petr Corp, Key Lab Petr Geochem, Res Inst Petr Explorat & Dev, Beijing, Peoples R China
2.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao, Peoples R China
3.Minist Nat Resources, Key Lab Marine Sedimentol & Environm Geol, Inst Oceanog 1, Qingdao, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao, Peoples R China
6.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China
7.CAS Ctr Excellence Quaternary Sci & Global Change, Xian, Peoples R China
8.Univ Paris Saclay, Lab GEOsci Paris Sud GEOPS, UMR 8148, CNRS,Univ Paris Sud, Orsay, France
推荐引用方式
GB/T 7714		 Zhai, Lina,Wan, Shiming,Colin, Christophe,et al. Deep-Water Formation in the North Pacific During the Late Miocene Global Cooling[J]. PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY,2021,36(2):16.
APA Zhai, Lina.,Wan, Shiming.,Colin, Christophe.,Zhao, Debo.,Ye, Yuntao.,...&Li, Anchun.(2021).Deep-Water Formation in the North Pacific During the Late Miocene Global Cooling.PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY,36(2),16.
MLA Zhai, Lina,et al."Deep-Water Formation in the North Pacific During the Late Miocene Global Cooling".PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY 36.2(2021):16.

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来源：海洋研究所

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