Physical structure and evolution of a cyclonic eddy in the Northern South China sea

doi:10.1016/j.dsr.2022.103876

IOCAS-IR > 海洋环流与波动重点实验室

	Physical structure and evolution of a cyclonic eddy in the Northern South China sea
	Chu, FuShuo1,3 ; Si, ZongShang 1,2,4; Yan, XiaoMei 1,2,4; Liu, ZhiLiang 5; Yu, JianCheng 6; Pang, ChongGuang 1,2,4
	2022-11-01
发表期刊	DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
ISSN	0967-0637
卷号	189 页码:13
通讯作者	Si, ZongShang(sizongshang@qdio.ac.cn)
摘要	The spatial-temporal evolution of a cyclonic eddy (CE) in the northern South China Sea (SCS) was analyzed based on observational data from underwater glider and satellite altimetry and outputs from Hybrid Coordinate Ocean Model (HYCOM). The CE was found to originate in the northeastern SCS and propagate along the continental slope, passing by the Xisha Islands. It eventually vanished offshore of the western Vietnam. Detailed subsurface temperature and salinity structures of CE were observed by underwater glider around the western Xisha Islands. The eddy experienced three evolution stages: continuously increase during its growth stage, gradually decrease when moving by the Xisha Islands, and rapidly weakening and merging with another cyclonic eddy to the west of Vietnam. During the first stage, the generation and growth of this CE were revealed to be due to the barotropic (BT) and baroclinic (BC) instabilities, with the deformation of the eddy being conducive to obtaining energy via the instabilities. During the second stage, i.e., after the CE reached the Xisha Islands, the eddy released (drained) energy to (from) the mean flow with negative (positive) BT and BC values in its northern (eastern) part. Overall, the volume-integrated BT and BC over the eddy area contributed to the eddy energy increase. For the decay of this CE near the Xisha Islands, the eddy kinetic energy budget analysis results indicated that it was mainly due to the interior eddy viscous dissipation.
关键词	South China Sea Cyclonic eddy Underwater glider HYCOM data
DOI	10.1016/j.dsr.2022.103876
收录类别	SCI
语种	英语
资助项目	Shenyang Institute of Automation, Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences[2016YFC0301203] ; National Key Research and Development Program of China ; [YJKYYQ20190047]
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:000863199800001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：1[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/337002/180730
专题	海洋环流与波动重点实验室
通讯作者	Si, ZongShang
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, Lab Ocean & Climate Dynam, Qingdao 266237, 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 5.Hebei Normal Univ Sci & Technol, Inst Ocean Sci, Qinhuangdao 066004, Peoples R China 6.Chinese Acad Sci, Shenyang Inst Automation, Shenyang 110016, Peoples R China
第一作者单位	海洋环流与波动重点实验室
通讯作者单位	海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Chu, FuShuo,Si, ZongShang,Yan, XiaoMei,et al. Physical structure and evolution of a cyclonic eddy in the Northern South China sea[J]. DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,2022,189:13.
APA	Chu, FuShuo,Si, ZongShang,Yan, XiaoMei,Liu, ZhiLiang,Yu, JianCheng,&Pang, ChongGuang.(2022).Physical structure and evolution of a cyclonic eddy in the Northern South China sea.DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,189,13.
MLA	Chu, FuShuo,et al."Physical structure and evolution of a cyclonic eddy in the Northern South China sea".DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS 189(2022):13.

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