Chapter
Dec 31, 2015
Field Verification of a Numerical Model of Beach Topography Change Due to Nearshore Currents, Undertow and Waves
Authors: Takuzo Shimizu, Masahito Tsuru, and Akira WatanabeAuthor Affiliations
Publication: Coastal Engineering 1994
Abstract
A practical method for estimating the undertow velocity and its direction is developed and verified on the basis of field measurement data. It is found that a simple vector addition of nearshore current and undertow gives a good approximation.
The actual bottom topography change during a year is simulated by the 3-D beach evolution model taking into account the cross-shore sediment transport due to waves and undertow as well as the transport due to nearshore currents. The results of both measurements and calculations show that the sediment transport due to nearshore current is predominant and the contribution of cross-shore sediment transports is cancelled for a long-term beach evolution.
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Information & Authors
Information
Published In
Coastal Engineering 1994
Pages: 2610 - 2624
Copyright
© 1995 American Society of Civil Engineers.
History
Published online: Dec 31, 2015
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ASCE Technical Topics:
- Beaches
- Coastal engineering
- Coastal processes
- Coasts, oceans, ports, and waterways engineering
- Engineering fundamentals
- Field tests
- Geomatics
- Methodology (by type)
- Models (by type)
- Nearshore
- Numerical models
- Ocean currents
- Research methods (by type)
- Shores
- Surveying methods
- Tests (by type)
- Topography
- Undertow
- Verification
Authors
Affiliations
Takuzo Shimizu
Penta-Ocean Construction Co. Ltd., 2-2-8 Koraku, Bunkyo-ku, Tokyo 112, Japan.
Masahito Tsuru
Penta-Ocean Construction Co. Ltd., 2-2-8 Koraku, Bunkyo-ku, Tokyo 112, Japan.
Akira Watanabe
Professor, Dept. of Civil Eng., Univ. of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113, Japan.
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