Case Study for a Cohesive Sediment Transport Model for Matagorda Bay, Texas, with Coupled ADCIRC 2D-Transport and SWAN Wave Models
Publication: Journal of Hydraulic Engineering
Volume 134, Issue 3
Abstract
Tidal current and wave forces are the primary factors causing agitation, suspension, and transport of littoral materials in a bay. This paper presents a study of the circulation patterns of the water and sediment fluxes in a real bay during ordinary natural weather conditions. A coupled hydrodynamic and wave model is developed to support the research. A two-dimensional parallel advanced circulation hydrodynamic model with an extended transport module is used to calculate the water circulation within the bay, while the simulating wave nearshore model is implemented to provide the wave parameter data. The month of March 2003 is selected to represent the test case for the sediment transport model in Matagorda Bay, Tex. The presence of wave action significantly, increases the amount of suspended sediment, and consequently, more deposited sediments occur around the ship channel, where shallow shoals are located. Comparison of the simulated deposited sediments in the Matagorda ship channel with the two selected points of historical dredging data of the bay gives a maximum difference of 22%. This result suggests the need for an extensive comparison study.
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Acknowledgments
The writers would like to thank Dr. Z. Demirbilek and Dr. L. Lin of ERDC-CHL of the USACE for providing the Matagorda dredging data. The study described in this paper has been supported in part by the U.S. Environmental Protection Agency through the South and Southwest Hazardous Substance Research Centre, the National Science Foundation, and the Texas Engineering Experiment Station at Texas A&M University.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 134 • Issue 3 • March 2008
Pages: 303 - 314
Copyright
© 2008 ASCE.
History
Received: Jan 25, 2005
Accepted: Apr 10, 2007
Published online: Mar 1, 2008
Published in print: Mar 2008
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