Hydrodynamics and sediment transport in natural and beneficial use marshes /
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| Other Authors: | , |
| Format: | Thesis eBook |
| Language: | English |
| Published: |
[College Station, Tex.] :
[Texas A&M University],
[2007]
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| Subjects: | |
| Online Access: | Link to OAK Trust copy |
| Abstract: | Since 1970, U.S. Army Corps of Engineers, Galveston District, has been usingdredged sediments from the Houston ship channel to create and restore salt marshes inGalveston Bay. Some projects have failed due to excessive sediment erosion or siltation.The research reported here applies an engineering approach to analysis of tidal creeks innatural and beneficial use marshes of Galveston Bay. The hydrodynamic numericalmodel, DYNLET, was used to assess circulation in marsh channels. A preliminarysediment transport model was developed to analyze erosion and deposition for the samechannels. In situ flume experiments were conducted to determine the sedimenterodibility in natural and constructed marshes. A natural reference marsh, Elm Grove,was studied to understand marsh hydrodynamics and model calibration. The modelresults show that DYNLET can largely duplicate the marsh hydrodynamics and thesediment transport model can provide preliminary indication of erosion in tidal creeks.Analysis of the preliminary channel layout of the beneficial-use marsh demonstrated thatchannels will have sufficient circulation and optimum velocities. |
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| Item Description: | "Major Subject: Civil Engineering" Title from author supplied metadata (record created on Feb. 23, 2007.) Vita. Abstract. Electronic resource. |
| Format: | Mode of access: World Wide Web. System requirements: World Wide Web access and Adobe Acrobat Reader. |
| Bibliography: | Includes bibliographical references. |