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

doi:10.1007/s10652-009-9146-3

IOCAS-IR > 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
	2009-10-01
发表期刊	ENVIRONMENTAL FLUID MECHANICS
ISSN	1567-7419
卷号	9 期号:5 页码:471-492
文章类型	Article
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.
关键词	Pearl River Estuary Buoyant Plume The norThern Shelf Of Scs River Discharge Wind
学科领域	Environmental Sciences ; Mechanics ; Meteorology & Atmospheric Sciences ; Oceanography ; Water Resources
DOI	10.1007/s10652-009-9146-3
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000270324500001
引用统计	被引频次：97[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/2386
专题	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
第一作者单位	中国科学院海洋研究所
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.

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