Spatial structure of turbulent mixing of an anticyclonic mesoscale eddy in the northern South China Sea

CORC > 沈阳自动化研究所 > 中国科学院沈阳自动化研究所 > 海洋机器人卓越创新中心

	Spatial structure of turbulent mixing of an anticyclonic mesoscale eddy in the northern South China Sea
	Qi, Yongfeng 2; Shang, Chenjing 3; Mao HB(毛华斌)2,4; Qiu CH(邱春华)5; Liang, Changrong 2; Yu, Linghui 2; Yu JC(俞建成)1; Shang XD(尚晓东)2
刊名	ACTA OCEANOLOGICA SINICA
	2020
卷号	39 期号:11 页码:69-81
关键词	mesoscale eddy turbulent mixing South China Sea GHP parameterization Thorpe-scale method
ISSN号	0253-505X
产权排序	5
英文摘要	Upper turbulent mixing in the interior and surrounding areas of an anticyclonic eddy in the northern South China Sea (SCS) was estimated from underwater glider data (May 2015) in the present study, using the Gregg-Henyey-Polzin parameterization and the Thorpe-scale method. The observations revealed a clear asymmetrical spatial pattern of turbulent mixing in the anticyclonic eddy area. Enhanced diffusivity (in the order of 10(-3) m(2)/s) was found at the posterior edge of the anticyclonic mesoscale eddy; on the anterior side, diffusivity was one order of magnitude lower on average. This asymmetrical pattern was highly correlated with the eddy kinetic energy. Higher shear variance on the posterior side, which is conducive to the triggering of shear instability, may be the main mechanism for the elevated diffusivity. In addition, the generation and growth of sub-mesoscale motions that are fed by mesoscale eddies on their posterior side may also promote the occurrence of strong mixing in the studied region. The results of this study help improve our knowledge regarding turbulent mixing in the northern SCS.
WOS关键词	INTERNAL WAVES ; KUROSHIO INTRUSION ; OCEAN CIRCULATION ; EDDIES ; ENERGY ; SURFACE ; LAYER ; FLOW ; VARIABILITY ; SHEAR
WOS研究方向	Oceanography
语种	英语
CSCD记录号	CSCD:6870952
WOS记录号	WOS:000605630000007
资助机构	Foundation item: The National Key R&D Plan of China under contract Nos 2017YFC0305904, 2017YFC0305804 and 2016YFC1401404 ; the National Natural Science Foundation of China under contract Nos 41876023, 41630970, 41806037, 41706137 and 41806033 ; Guangdong Science and Technology Project under contract Nos 2019A1515111044, 2018A0303130047 and 2017A030310332 ; Guangzhou Science and Technology Project under contract No. 201707020037 ; Natural Science Foundation of Shenzhen University under contract No. 2019078 ; Dedicated Fund for Promoting High-quality Economic Development in Guangdong Province (Marine Economic Development Project) under contract No. GDOE[2019]A03 ; Independent Research Project Program of State Key Laboratory of Tropical Oceanography under contract Nos LTOZZ1902 and LTO1909
内容类型	期刊论文
源URL	[http://ir.sia.cn/handle/173321/28214]
专题	海洋机器人卓越创新中心
通讯作者	Mao HB(毛华斌)
作者单位	1.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China 2.State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China 3.Shenzhen Key Laboratory of Marine Bioresources and Eco-environmental Science, College of Life Science and Oceanography, Shenzhen University, Shenzhen 518060, China 4.Ocean College, Zhejiang University, Zhoushan 316021, China 5.The Center for Coastal Ocean Science and Technology, School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
推荐引用方式 GB/T 7714	Qi, Yongfeng,Shang, Chenjing,Mao HB,et al. Spatial structure of turbulent mixing of an anticyclonic mesoscale eddy in the northern South China Sea[J]. ACTA OCEANOLOGICA SINICA,2020,39(11):69-81.
APA	Qi, Yongfeng.,Shang, Chenjing.,Mao HB.,Qiu CH.,Liang, Changrong.,...&Shang XD.(2020).Spatial structure of turbulent mixing of an anticyclonic mesoscale eddy in the northern South China Sea.ACTA OCEANOLOGICA SINICA,39(11),69-81.
MLA	Qi, Yongfeng,et al."Spatial structure of turbulent mixing of an anticyclonic mesoscale eddy in the northern South China Sea".ACTA OCEANOLOGICA SINICA 39.11(2020):69-81.