Numerical modelling of hydrodynamics and sand transport in the tide-dominated coastal-to-estuarine region

Luo, Jing, Li, Ming ORCID: 0000-0002-4825-6385, Sun, Zhilin and O'Connor, Brian A
(2013) Numerical modelling of hydrodynamics and sand transport in the tide-dominated coastal-to-estuarine region. MARINE GEOLOGY, 342. pp. 14-27.

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In order to understand the influences of tide, waves and sediment sizes on the sand exchange between an estuary and the adjacent coastal region, three estuaries around North West England were chosen for detailed study using a numerical morphological model system, TELEMAC (Hervouet and Bates, 2000). The numerical model was calibrated against available field measurements for both hydrodynamics and sediment transport. Simulations on sediment transport under a representative combined waves and tidal condition were carried out. Comparisons of the model results across the three different estuaries concentrate on effects from seabed bathymetry, hydrodynamics and sediment sizes under the complex tide and wave interactions. It is clear that the dominant hydrodynamic processes of an estuary are influenced by the tidal asymmetry, wave-driven currents and wave-induced stirring effects, which are all affected by the local seabed bathymetry given the same input tide and waves. Generally, it is found that the net sediment transport direction at the estuary mouth depends on the relative strength of landwards transport in the shallow water depths due to tidal asymmetry and seawards transport within the estuary's deep channels. In addition, the overall sediment flux direction is largely dictated by local and surrounding sediment sizes. © 2013 The Authors.

Item Type: Article
Additional Information: ## TULIP Type: Articles/Papers (Journal) ##
Uncontrolled Keywords: tide, waves, estuary, sediment transport, coastal morphology, numerical model
Subjects: ?? TA ??
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Depositing User: Symplectic Admin
Date Deposited: 29 Jul 2015 09:58
Last Modified: 15 Dec 2022 21:40
DOI: 10.1016/j.margeo.2013.06.004
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