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	Three-dimensional structure of mesoscale eddies in the western tropical Pacific as revealed by a high-resolution ocean simulation
	Wang QingYe1,2
	2017-09-01
发表期刊	SCIENCE CHINA-EARTH SCIENCES
卷号	60期号:9页码:1719-1731
文章类型	Article
摘要	The three-dimensional structure of mesoscale eddies in the western tropical Pacific (6A degrees S-20A degrees N, 120A degrees E-150A degrees E) is investigated using a high-resolution ocean model simulation. Eddy detection and eddy tracking algorithms are applied to simulated horizontal velocity vectors, and the anticyclonic and cyclonic eddies identified are composited to obtain their three-dimensional structures. The mean lifetime of all long-lived eddies is about 52 days, and their mean diameter is 147 km. Two typical characteristics of mesoscale eddies are revealed and possible dynamic explanations are analyzed. One typical characteristic is that surface eddies are generally separated from subthermocline eddies along the bifurcation latitude (similar to 13A degrees N) of the North Equatorial Current in the western tropical Pacific, which may be associated with different eddy energy sources and vertical eddy energy fluxes in subtropical and tropical gyres. Surface eddies have maximum swirl velocities of 8-9 cm s(-1) and can extend to about 1500 m depth. Subthermocline eddies occur below 200 m, with their cores at about 400-600 m depth, and their maximum swirl velocities can reach 10 cm s(-1). The other typical characteristic is that the meridional velocity component of the eddy is much larger than the zonal component. This characteristic might be due to more zonal eddy pairs (two eddies at the same latitude), which is also supported by the zonal wavelength (about 200 km) in the high-frequency meridional velocity component of the horizontal velocity.
关键词	Ocean Eddies Western Tropical Pacific Three-dimensional Structure
DOI	10.1007/s11430-016-9072-y
收录类别	SCI
语种	英语
WOS记录号	WOS:000409376600014
引用统计	被引频次：6[WOS]   [WOS记录]     [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.qdio.ac.cn/handle/337002/143161
专题	海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Qingdao 266071, Peoples R China
第一作者单位	海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Wang QingYe. Three-dimensional structure of mesoscale eddies in the western tropical Pacific as revealed by a high-resolution ocean simulation[J]. SCIENCE CHINA-EARTH SCIENCES,2017,60(9):1719-1731.
APA	Wang QingYe.(2017).Three-dimensional structure of mesoscale eddies in the western tropical Pacific as revealed by a high-resolution ocean simulation.SCIENCE CHINA-EARTH SCIENCES,60(9),1719-1731.
MLA	Wang QingYe."Three-dimensional structure of mesoscale eddies in the western tropical Pacific as revealed by a high-resolution ocean simulation".SCIENCE CHINA-EARTH SCIENCES 60.9(2017):1719-1731.

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