Physical oceanography of the Caroline M4 seamount in the tropical western Pacific Ocean in summer 2017

doi:10.1007/s00343-021-0359-8

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

	Physical oceanography of the Caroline M4 seamount in the tropical western Pacific Ocean in summer 2017
	Shi, Xingyu 1,3; Wang, Zhenyan 1,2,3,4; Huang, Haijun 1,2,3,4
刊名	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2021-07-28
页码	17
关键词	Caroline seamount tropical western Pacific Ocean currents water masses tides turbulent diffusivities
ISSN号	2096-5508
DOI	10.1007/s00343-021-0359-8
通讯作者	Wang, Zhenyan(zywang@qdio.ac.cn)
英文摘要	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.
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
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000678432300003
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/175822]
专题	海洋研究所_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
推荐引用方式 GB/T 7714	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.