Numerical Modelling of Tidal Dynamic and Water Circulation at the Gold Coast Broadwater, Australia

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Title Numerical Modelling of Tidal Dynamic and Water Circulation at the Gold Coast Broadwater, Australia
Author Mirfenderesk, Hamid; Tomlinson, Rodger Benson
Journal Name Journal of Coastal Research
Editor Charles Lemckert
Year Published 2007
Place of publication United States
Publisher Coastal Education and Research Foundation, Inc.
Abstract The development of a vertically averaged numerical model of an estuary in the coastal region of the Pacific Ocean on the east coast of Australia is described. The primary objective of the study is to provide a detailed picture of the tidal characteristics in the study area to enable the simulation of the whole water circulation within the water body. A comprehensive data set is collected as part of this study to understand local dynamics and to calibrate and validate the model. Calibration and validation have been achieved through a comparison of computed tidal harmonics against those derived from harmonic analysis of the measured water level variations. Also a comparison was made between the measured discharges across seven cross sections at critical locations in the study area with the discharge obtained through modelling. Calculations show that tides become mixed, mainly semidiurnal in the estuary. The study shows that for lunar constituents (M2 and S2) dissipation mechanisms are dominant and their amplitudes decrease along the estuary. Solar constituents (O1 and K1) experience an increase in amplitude. However, the net result is a reduction of tidal amplitude, indicating the dominance of dissipation mechanisms.
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright 2007 Coastal Education and Research Foundation Inc (CERF). Please refer to the journal's website for access to the definitive, published version.
Volume SI
Issue Number 50
Page from 277
Page to 281
ISSN 0749-0208
Date Accessioned 2008-02-29
Language en_AU
Research Centre Griffith Centre for Coastal Management
Faculty Faculty of Science, Environment, Engineering and Technology
Subject PRE2009-Environmental Engineering Modelling
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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