Tidally induced upwelling off Yangtze River estuary and in Zhejiang coastal waters in summer

doi:10.1007/s11430-007-2050-0

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋环境与数值模拟研究室

	Tidally induced upwelling off Yangtze River estuary and in Zhejiang coastal waters in summer
	Lü, XinGang 1,2,3,4; Qiao, FangLi 1,2; Xia, ChangShui 1,2; Yuan, YeLi 1,2
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2007-03
卷号	50 期号:3 页码:462-473
关键词	upwelling dynamic mechanism numerical simulation tidal movement tidal mixing front
ISSN号	1006-9313
DOI	10.1007/s11430-007-2050-0
英文摘要	MASNUM wave-tide-circulation coupled numerical model (MASNUM coupled model, hereinafter) is developed based on the Princeton Ocean Model (POM). Both POM and MASNUM coupled model are applied in the numerical simulation of the upwelling off Yangtze River estuary and in Zhejiang coastal waters in summer. The upwelling mechanisms are analyzed from the viewpoint of tide, and a new mechanism is proposed. The study suggests that the tidally inducing mechanism of the upwelling includes two dynamic aspects: the barotropic and the baroclinic process. On the one hand, the residual currents induced by barotropic tides converge near the seabed, and upwelling is generated to maintain mass conservation. The climbing of the residual currents along the sea bottom slope also contributes to the upwelling. On the other hand, tidal mixing plays a very important role in inducing the upwelling in the baroclinic sea circumstances. Strong tidal mixing leads to conspicuous front in the coastal waters. The considerable horizontal density gradient across the front elicits a secondary circulation clinging to the tidal front, and the upwelling branch appears near the frontal zone. Numerical experiments are designed to determine the importance of tide in inducing the upwelling. The results indicate that tide is a key and dominant inducement of the upwelling. Experiments also show that coupling calculation of the four main tidal constituents(M-2, S-2, K-1, and O-1), rather than dealing with the single M-2 constituent, improves the modeling precision of the barotropic tide-induced upwelling.
电子版国际标准刊号	18622801
WOS研究方向	Geology
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000246031700015
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/4583]
专题	业务部门_海洋环境与数值模拟研究室
作者单位	1.The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China; 2.Key Laboratory of Marine Science and Numerical Modeling (MASNUM), State Oceanic Administration, Qingdao 266061, China; 3.Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; 4.Graduate University, Chinese Academy of Sciences, Beijing 100039, China
推荐引用方式 GB/T 7714	Lü, XinGang,Qiao, FangLi,Xia, ChangShui,et al. Tidally induced upwelling off Yangtze River estuary and in Zhejiang coastal waters in summer[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2007,50(3):462-473.
APA	Lü, XinGang,Qiao, FangLi,Xia, ChangShui,&Yuan, YeLi.(2007).Tidally induced upwelling off Yangtze River estuary and in Zhejiang coastal waters in summer.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,50(3),462-473.
MLA	Lü, XinGang,et al."Tidally induced upwelling off Yangtze River estuary and in Zhejiang coastal waters in summer".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 50.3(2007):462-473.