Prediction of Wind Waves in a Shallow Estuary
- 1 July 2005
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Waterway, Port, Coastal, and Ocean Engineering
- Vol. 131 (4), 137-148
- https://doi.org/10.1061/(asce)0733-950x(2005)131:4(137)
Abstract
In comparison with wave modeling on an open coast, the complex geometry and bathymetry of estuaries, the unsteady conditions associated with estuarine circulation generated by tides and winds, and the relatively inadequate field data present a unique challenge. This study utilizes an unsteady, curvilinear spectral wave model that has the flexibility to resolve large geometric and bathymetric gradients and allows for consideration of unsteady forcing and currents to predict wind waves in Mobile Bay, Alabama. First, a laboratory data set on wave transformation over a circular shoal is chosen to test the curvilinear wave model. Excellent agreement is found between the numerical results and the laboratory measurements with a directional wave input and fine spatial resolution. Second, a three-dimensional circulation model is used to predict the varying current field and water levels that serve as the input to the wave model. The predictions of the wave model under unsteady forcing and ambient currents are then compared with the existing field measurement of wind waves in Mobile Bay. Numerical experiments are carried out to examine the effects of estuarine circulation and grid resolution on the model result. The study shows that the technique of linking a spectral wave model to a hydrodynamic model on curvilinear grids is an effective tool for wave prediction in estuaries.Keywords
This publication has 19 references indexed in Scilit:
- Wave measurement and modeling in Chesapeake BayContinental Shelf Research, 2002
- Boussinesq Modeling of Wave Transformation, Breaking, and Runup. II: 2DJournal of Waterway, Port, Coastal, and Ocean Engineering, 2000
- Modelling shallow water wave generation and transformation in an intertidal estuaryCoastal Engineering, 1999
- A third‐generation wave model for coastal regions: 1. Model description and validationJournal of Geophysical Research: Oceans, 1999
- Spectral Model for Wave Transformation and Breaking over Irregular BathymetryJournal of Waterway, Port, Coastal, and Ocean Engineering, 1998
- Vapor pressures in the ternary system water‐nitric acid‐sulfuric acid at low temperature: A reexaminationPublished by American Geophysical Union (AGU) ,1996
- Wave data in Mobile Bay, Alabama from March 1991 to May 1992Open-File Report, 1994
- Similarity of the wind wave spectrum in finite depth water: 1. Spectral formJournal of Geophysical Research: Oceans, 1985
- Development of a turbulence closure model for geophysical fluid problemsReviews of Geophysics, 1982
- Adaptive zoning for singular problems in two dimensionsJournal of Computational Physics, 1982