Dynamical Characteristics and Salt Transportation of Lingdingyang Bay of Pearl River Estuary in Summer, Guangdong Province, China

2011 ◽  
Vol 347-353 ◽  
pp. 1926-1929
Author(s):  
He Wei ◽  
He Qin Chen ◽  
Hua Li You ◽  
Long Hua Gao
Keyword(s):  
Salt Water ◽  
Three Dimensional ◽  
River Estuary ◽  
Pearl River Estuary ◽  
Velocity Shear ◽  
Pearl River ◽  
Dynamical Characteristics ◽  
Salinity Gradients ◽  
Salinity Transport ◽  
Stratified Estuary

Abstract. In order to comprehend the salinity transport mechanism,the tidally varying circulation,and salt stratification are investigated in Lingdingyang bay.The conclusions are:When the discharge is moderate,Lingdingyang is a highly stratified estuary,and salt wedge movement is very prominent.The baroclinic circulation is comparatively strong,and strong salinity gradients create a complex three-dimensional flow.A tidal intrusion front moves upstream in flood periods,and distance of movement is longest in flood slack.Because Velocity shear across the interface of fresh and salt water,and intense waves from and break,entrainment is very strong which cause salt water into freshwater.

scholarly journals Development of a GIS for managing dynamic, 3D coastal information of Pearl River Estuary

2007 ◽  
Vol 9 (3) ◽  
pp. 215-232 ◽  
Author(s):  
S. M. Y. Ng ◽  
O. W. H. Wai ◽  
Y. S. Li ◽  
Z. H. Xu ◽  
H. L. Chen ◽  
...  
Keyword(s):  
Water Quality ◽  
Three Dimensional ◽  
River Estuary ◽  
Pearl River Estuary ◽  
Quality Data ◽  
Pearl River ◽  
Water Quality Data ◽  
Efficient Retrieval ◽  
Marine Data ◽  
Rigorous Model

A geographic information system (GIS) was developed for retrieval and display of hydrodynamic and water quality data. To establish such a system, two of the most important challenges are: (1) to establish a rigorous model which captures the three-dimensional and continuously changing characteristics of marine data and (2) to develop interpolation techniques to accommodate for the temporally and spatially scattered distribution of collected data. The developed system not only bridges together a GIS and a database of various physical, chemical and biological geographically based data for efficient retrieval and management of information, but also incorporates advanced display tools designed specifically for marine data. The initial intention of extending GIS for marine application is to mitigate the deteriorating water quality situation in the Pearl River Estuary (PRE).

scholarly journals Threat Posed by Future Sea-Level Rise to Freshwater Resources in the Upper Pearl River Estuary

2021 ◽  
Vol 9 (3) ◽  
pp. 291
Author(s):  
Jiaxi Wang ◽  
Bo Hong
Keyword(s):  
Drinking Water ◽  
Sea Level Rise ◽  
Sea Level ◽  
Saltwater Intrusion ◽  
River Estuary ◽  
Pearl River Estuary ◽  
Dry Season ◽  
Pearl River ◽  
Freshwater Resources ◽  
Salinity Transport

The degradation of densely populated river delta environments due to the accelerating rise in sea level can affect the availability of freshwater for municipal supplies, irrigation, and industrial use. A fully calibrated three-dimensional numerical model is used in this study to evaluate the threat posed by the sea-level rise, which predicted to occur by 2100, to freshwater resources in the upper tributaries of Pearl River Estuary. The results indicate that both the intensity and duration of dry-season saltwater intrusion greatly increase as the sea level rises, making the water at drinking-water intake stations for the four waterworks no longer suitable for municipal supply. Flow modulation is performed to identify the threshold at which saltwater intrusion could be effectively suppressed in response to both sea-level rise and dry season hydrodynamics. The number of days for which water meets the drinking-water standard decreases as the sea level rises, but increases with increased river flow. The combined effect of future drought and sea-level rise would further limit the availability of freshwater in the upper tributaries. Stronger upstream salinity transport during flood tide are found in the sea-level rise case. The increased flood tidal salinity transport would have great impact on the tidal freshwater wetlands.

Acute toxicity ofCochlodinium geminatumbloom waters from Pearl River Estuary on larvae of brine shrimp,fish and shrimp

2013 ◽  
Vol 37 (9) ◽  
pp. 1328
Author(s):  
Ni WU ◽  
Tao JIANG ◽  
Tianjiu JIANG ◽  
Songhui LV ◽  
Qingliu HUAN
Keyword(s):  
Acute Toxicity ◽  
Brine Shrimp ◽  
River Estuary ◽  
Pearl River Estuary ◽  
Pearl River
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