A clustering analysis of eddies' spatial distribution in the South China Sea

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	A clustering analysis of eddies' spatial distribution in the South China Sea
	[Yi, J. ; Du, Y. ; Wang, X. ; Zhou, C.] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China ; [Wang, X.] Shandong Univ Sci & Technol, Geomat Coll, Qingdao 266510, Peoples R China ; [He, Z.] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog LTO, Guangzhou 510301, Guangdong, Peoples R China ; [He, Z.] Xiamen Univ, Coll Ocean & Earth Sci, Xiamen 361005, Peoples R China
刊名	OCEAN SCIENCE
	2013
卷号	9 期号:1 页码:171-182
ISSN号	1812-0784
通讯作者	duyy@lreis.ac.cn
中文摘要	Spatial variation is important for studying the mesoscale eddies in the South China Sea (SCS). To investigate such spatial variations, this study made a clustering analysis on eddies' distribution using the K-means approach. Results showed that clustering tendency of anticyclonic eddies (AEs) and cyclonic eddies (CEs) were weak but not random, and the number of clusters were proved greater than four. Finer clustering results showed 10 regions where AEs densely populated and 6 regions for CEs in the SCS. Previous studies confirmed these partitions and possible generation mechanisms were related. Comparisons between AEs and CEs revealed that patterns of AE are relatively more aggregated than those of CE, and specific distinctions were summarized: (1) to the southwest of Luzon Island, AEs and CEs are generated spatially apart; AEs are likely located north of 14 degrees N and closer to shore, while CEs are to the south and further offshore. (2) The central SCS and Nansha Trough are mostly dominated by AEs. (3) Along 112 degrees E, clusters of AEs and CEs are located sequentially apart, and the pairs off Vietnam represent the dipole structures. (4) To the southwest of the Dongsha Islands, AEs are concentrated to the east of CEs. Overlaps of AEs and CEs in the northeastern and southern SCS were further examined considering seasonal variations. The northeastern overlap represented near-concentric distributions while the southern one was a mixed effect of seasonal variations, complex circulations and topography influences.
学科主题	Meteorology & Atmospheric Sciences ; Oceanography
资助信息	This is a contribution to Research Project 41071250 of the National Science Foundation of China and 088RA500KA of the Innovation Projects of the State Key Laboratory of Resource and Environment Information System, Chinese Academy of Sciences. We thank the US Naval Research Laboratory for providing the SSH data set and appreciate the comments from reviews and readers.
原文出处	COPERNICUS GESELLSCHAFT MBH
语种	英语
WOS记录号	WOS:000318228000003
公开日期	2015-01-14
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/10940]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	[Yi, J.,Du, Y.,Wang, X.,et al. A clustering analysis of eddies' spatial distribution in the South China Sea[J]. OCEAN SCIENCE,2013,9(1):171-182.
APA	[Yi, J..,Du, Y..,Wang, X..,Zhou, C.] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China.,[Wang, X.] Shandong Univ Sci & Technol, Geomat Coll, Qingdao 266510, Peoples R China.,...&[He, Z.] Xiamen Univ, Coll Ocean & Earth Sci, Xiamen 361005, Peoples R China.(2013).A clustering analysis of eddies' spatial distribution in the South China Sea.OCEAN SCIENCE,9(1),171-182.
MLA	[Yi, J.,et al."A clustering analysis of eddies' spatial distribution in the South China Sea".OCEAN SCIENCE 9.1(2013):171-182.