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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water engineering : The impacts of tide on the flow division at the apex of the pearl river delta
The impacts of tide on the flow division at the apex of the pearl river delta
Author : WEI ZHANG(1) (2), JING DU(2)
ABSTRACT
This paper aims to quantify the tidal impact on subtidal discharge distribution at the bifurcations in the Pearl River Delta
in different bathymetries. The Pearl River Delta (PRD) is a dynamically complex estuarine system located in the northern
continental shelf of the South China Sea. Over past years, accelerated anthropogenic activities, such as sand excavation
and reclamation, have exerted great pressure on the bathymetry in the Pearl River Delta. Thus the hydrodynamics
changed obviously in this region. A 2-D flow numerical model covered the entire Pearl River Estuary was established to
simulate the hydrodynamics driven by river discharge and tides in the delta channel network. The model was forced with
tides at open sea boundaries and with measured river discharge at upstream locations. The model validation of water
surface elevation and discharge are in reasonable agreement with the observational data, suggesting that the model is
robust enough to capture the physical dynamics in the PRD. Results of distribution of river discharge indicate that in the
whole PRD the tidal impact increases seaward and with the changes of underwater topography, this impact is more
apparent. In general, the effect of tides is to hamper the discharge division that would occur in the case without tides.
File Size : 5,185,808 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water engineering
Date Published : 18/08/2015
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