A model study of the summer southeast Vietnam offshore current in the southern 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 model study of the summer southeast Vietnam offshore current in the southern south China sea
	Cai, SQ ; Long, XM ; Wang, SN
刊名	CONTINENTAL SHELF RESEARCH
	2007
卷号	27 期号:18 页码:2357-2372
关键词	western boundary current offshore current numerical modeling summer monsoon south China sea
ISSN号	0278-4343
通讯作者	caisq@scsio.ac.cn
中文摘要	The western boundary current in the southern South China Sea (SCS) in summer does not always flow northward along the Indo-China Peninsula, it leaves the southeast coast of peninsula around 10-14 degrees N, forming a strong eastward jet called "Vietnam Coastal Current" or "Southeast Vietnam Offshore Current" (SVOC). It is known that the wind stress curl is the major driving factor responsible for this current. In this paper, we carry on the study of the separation position, strength and forming time of this current. A connected si ngle-layer/two-layer model is employed here to study these problems. According to the numerical experiments and analyses of the vorticity dynamics, it is found that, the local wind stress curl (including the northern cyclonic and the southern anticyclonic wind forcing curl), the nonlinear term, the topographic effect, the planetary vorticity advection and the water exchange between the SCS and Java Sea via the Sunda Shelf have an important effect on both the position where this current leaves the coast and its strength; when there is an inflow via the Sunda Shelf, the current is stronger and the separation position is more northward; whereas the water stratification, the coastline and the inflow of Kuroshio have little effect on its separation. In fact, two opposite flowing currents, the northward SVOC and the southward western branch of the cyclonic eddy to its north near the Indo-China Peninsula, collide with each other, and the strength of these two currents determine the separation position of the SVOC. Origin of the SVOC may be driven by the local negative wind stress curl in the middle SCS in mid-spring, this current flows along the coast of the Indo-China Peninsula and leaves the coast at high latitude, flowing northeastward; once the local positive wind stress curl near the northern Indo-China Peninsula or the negative one near the southern Indo-China Peninsula is large enough, this current will begin to leave the coast at low latitude. (C) 2007 Elsevier Ltd. All rights reserved.
学科主题	Oceanography
收录类别	SCI
原文出处	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000250912300006
公开日期	2011-07-03
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/5851]
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	Cai, SQ,Long, XM,Wang, SN. A model study of the summer southeast Vietnam offshore current in the southern south China sea[J]. CONTINENTAL SHELF RESEARCH,2007,27(18):2357-2372.
APA	Cai, SQ,Long, XM,&Wang, SN.(2007).A model study of the summer southeast Vietnam offshore current in the southern south China sea.CONTINENTAL SHELF RESEARCH,27(18),2357-2372.
MLA	Cai, SQ,et al."A model study of the summer southeast Vietnam offshore current in the southern south China sea".CONTINENTAL SHELF RESEARCH 27.18(2007):2357-2372.