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Physical oceanography of the Caroline M4 seamount in the tropical western Pacific Ocean in summer 2017
Shi, Xingyu1,3; Wang, Zhenyan1,2,3,4; Huang, Haijun1,2,3,4
2021-07-28
发表期刊JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN2096-5508
页码17
通讯作者Wang, Zhenyan(zywang@qdio.ac.cn)
摘要Physical oceanography plays an important role in the formation of submarine sediments, and the distribution of nutriments and biocenoses in seamounts. The M4 seamount is located in the Caroline Island Ridge of the western Pacific Ocean. The physical properties around M4 seamount are preliminarily analyzed based on the in-situ data obtained in summer 2017 in Caroline M4 seamount and open-sourced data. We found that the water in the upper 200 m is controlled by the westward North Equatorial Current (NEC), while the water between 300-1 000 m is dominated by the eastward North Equatorial Undercurrent (NEUC). The current direction fluctuates significantly below 300 m at upstream stations. At the same depth of the lee sides, the current direction changes with the distance from seamount. These are likely caused by the obstacle of M4 seamount. The calculation results show that there is an anticyclonic cap above M4 seamount caused by tidal rectification. Tidal currents in M4 seamount are squeezed by the topography and amplified, and the amplified tidal currents play a dominant role in M4 seamount. First, the circulation system generated by the interaction of the amplified tidal current and M4 seamount drives the upward/downward movement of the isotherms. Secondly, the thickness of the surface turbulent layer is changed with the tidal phase. Thirdly, high turbulent diffusivities are found in the bottom of M4 seamount, and these are most likely attributed to the turbulent mixing induced by the mutual effect between semidiurnal tidal currents and steep bathymetry. This article of physical oceanography provides scientific basis for further analysis of the distribution of biological community and deposition mechanism in M4 seamount.
关键词Caroline seamount tropical western Pacific Ocean currents water masses tides turbulent diffusivities
DOI10.1007/s00343-021-0359-8
收录类别SCI
语种英语
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19060401] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42010203] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23050503] ; Science and Technology Basic Resources Investigation Program of China[2017FY100802]
WOS研究方向Marine & Freshwater Biology ; Oceanography
WOS类目Limnology ; Oceanography
WOS记录号WOS:000678432300003
出版者SCIENCE PRESS
引用统计
被引频次:4[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/337002/175823
专题海洋地质与环境重点实验室
通讯作者Wang, Zhenyan
作者单位1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
2.Pilot Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
第一作者单位中国科学院海洋研究所
通讯作者单位中国科学院海洋研究所
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Shi, Xingyu,Wang, Zhenyan,Huang, Haijun. Physical oceanography of the Caroline M4 seamount in the tropical western Pacific Ocean in summer 2017[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2021:17.
APA Shi, Xingyu,Wang, Zhenyan,&Huang, Haijun.(2021).Physical oceanography of the Caroline M4 seamount in the tropical western Pacific Ocean in summer 2017.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,17.
MLA Shi, Xingyu,et al."Physical oceanography of the Caroline M4 seamount in the tropical western Pacific Ocean in summer 2017".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2021):17.
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