A modeling study of the formation, maintenance, and relaxation of upwelling circulation on the Northeastern South China Sea shelf

doi:10.1016/j.dsr2.2013.12.009

	A modeling study of the formation, maintenance, and relaxation of upwelling circulation on the Northeastern South China Sea shelf
	Gan, Jianping 1,2; Wang, Jingjing 1,2; Liang, Linlin 1,2; Li, Li 3; Guo, Xiaogang 3
刊名	DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
	2015-07
卷号	117 页码:41-52
关键词	Wind-driven upwelling dynamics Geostrophic cross-isobath transport Circulation over variable shelf
ISSN号	0967-0645
DOI	10.1016/j.dsr2.2013.12.009
英文摘要	We investigated persistent summer upwelling circulation, in response to upwelling and downwelling favorable winds, in the Northeastern South China Sea (NSCS). We used a validated three-dimensional ocean circulation model that was forced by realistic atmospheric fluxes and downscaled coupling of real-time lateral fluxes. We found that upwelling in the NSCS was formed and maintained by the presence of an intensified westward along-isobath pressure gradient force (PGF(m)) and bottom frictional effect that led to cross-isobath currents over the unique NSCS widened shelf. The upwelling favorable PGF(m), and the frictional effect arose from the interaction between the eastward shelf current and the shelf topography. These intrinsic upwelling dynamics in the NSCS were largely sustained during episodic downwelling winds in the upwelling season because the retreat of the eastward shelf current from pre-existing upwelling was significantly slowed by the unique widened shelf topography. Furthermore, the upwelling dynamics could also be maintained and, even developed, during downwelling favorable winds, when the eastward shelf current was sustained by the pumping of downstream outflow. (C) 2014 Elsevier Ltd. All rights reserved.
资助项目	Hong Kong's Research Grant Council[N_HKUST627/13] ; Hong Kong's Research Grant Council[GRF612412]
WOS关键词	OCEAN DYNAMICS EXPERIMENT ; COAST ; TOPOGRAPHY ; CALIFORNIA
WOS研究方向	Oceanography
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000357231100005
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/25164]
专题	自然资源部第一海洋研究所
通讯作者	Gan, Jianping
作者单位	1.Hong Kong Univ Sci & Technol, Dept Math, Hong Kong, Hong Kong, Peoples R China 2.Hong Kong Univ Sci & Technol, Div Environm, Hong Kong, Hong Kong, Peoples R China 3.State Ocean Adm, Inst Oceanog 3, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Gan, Jianping,Wang, Jingjing,Liang, Linlin,et al. A modeling study of the formation, maintenance, and relaxation of upwelling circulation on the Northeastern South China Sea shelf[J]. DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY,2015,117:41-52.
APA	Gan, Jianping,Wang, Jingjing,Liang, Linlin,Li, Li,&Guo, Xiaogang.(2015).A modeling study of the formation, maintenance, and relaxation of upwelling circulation on the Northeastern South China Sea shelf.DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY,117,41-52.
MLA	Gan, Jianping,et al."A modeling study of the formation, maintenance, and relaxation of upwelling circulation on the Northeastern South China Sea shelf".DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY 117(2015):41-52.