Dynamics of the buoyant plume off the Pearl River Estuary in summer

doi:10.1007/s10652-009-9146-3

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	Dynamics of the buoyant plume off the Pearl River Estuary in summer
	Ou, Suying 2,3; Zhang, Hong 1; Wang, Dong-xiao 4
刊名	ENVIRONMENTAL FLUID MECHANICS
	2009-10-01
卷号	9 期号:5 页码:471-492
关键词	Pearl River Estuary Buoyant Plume The norThern Shelf Of Scs River Discharge Wind
ISSN号	1567-7419
DOI	10.1007/s10652-009-9146-3
文献子类	Article
英文摘要	Field measurements of salinity, wind and river discharge and numerical simulations of hydrodynamics from 1978 to 1984 are used to investigate the dynamics of the buoyant plume off the Pearl River Estuary (PRE), China during summer. The studies have shown that there are four major horizontal buoyant plume types in summer: Offshore Bulge Spreading (Type I), West Alongshore Spreading (Type II), East Offshore Spreading (Type III), and Symmetrical Alongshore Spreading (Type IV). River mouth conditions, winds and ambient coastal currents have inter-influences to the transport processes of the buoyant plume. It is found that all of the four types are surface-advected plumes by analysing the vertical characteristic of the plumes, and the monthly variations of the river discharge affect the plume size dominantly. The correlation coefficient between the PRE plume size and the river discharge reaches 0.85 during the high river discharge season. A wind strength index has been introduced to examine the wind effect. It is confirmed that winds play a significant role in forming the plume morphology. The alongshore wind stress and the coastal currents determine the alongshore plume spreading. The impact of the ambient currents such as Dongsha Current and South China Sea (SCS) Warm Current on the plume off the shelf has also assessed. The present study has demonstrated that both the river discharge and wind conditions affect the plume evolution.; Field measurements of salinity, wind and river discharge and numerical simulations of hydrodynamics from 1978 to 1984 are used to investigate the dynamics of the buoyant plume off the Pearl River Estuary (PRE), China during summer. The studies have shown that there are four major horizontal buoyant plume types in summer: Offshore Bulge Spreading (Type I), West Alongshore Spreading (Type II), East Offshore Spreading (Type III), and Symmetrical Alongshore Spreading (Type IV). River mouth conditions, winds and ambient coastal currents have inter-influences to the transport processes of the buoyant plume. It is found that all of the four types are surface-advected plumes by analysing the vertical characteristic of the plumes, and the monthly variations of the river discharge affect the plume size dominantly. The correlation coefficient between the PRE plume size and the river discharge reaches 0.85 during the high river discharge season. A wind strength index has been introduced to examine the wind effect. It is confirmed that winds play a significant role in forming the plume morphology. The alongshore wind stress and the coastal currents determine the alongshore plume spreading. The impact of the ambient currents such as Dongsha Current and South China Sea (SCS) Warm Current on the plume off the shelf has also assessed. The present study has demonstrated that both the river discharge and wind conditions affect the plume evolution.
学科主题	Environmental Sciences ; Mechanics ; Meteorology & Atmospheric Sciences ; Oceanography ; Water Resources
URL标识	查看原文
语种	英语
WOS记录号	WOS:000270324500001
公开日期	2010-12-22
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/2387]
专题	海洋研究所_海洋环流与波动重点实验室
作者单位	1.Griffith Univ, Griffith Sch Engn, Gold Coast, Qld 4217, Australia 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 3.Zhongshan Univ, Inst Estuarine & Coastal Res, Guangzhou 510275, Peoples R China 4.Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Ou, Suying,Zhang, Hong,Wang, Dong-xiao. Dynamics of the buoyant plume off the Pearl River Estuary in summer[J]. ENVIRONMENTAL FLUID MECHANICS,2009,9(5):471-492.
APA	Ou, Suying,Zhang, Hong,&Wang, Dong-xiao.(2009).Dynamics of the buoyant plume off the Pearl River Estuary in summer.ENVIRONMENTAL FLUID MECHANICS,9(5),471-492.
MLA	Ou, Suying,et al."Dynamics of the buoyant plume off the Pearl River Estuary in summer".ENVIRONMENTAL FLUID MECHANICS 9.5(2009):471-492.