Determination of Inverse Depths Using Direct Boussinesq Modeling
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 126, Issue 4
Abstract
This paper presents a technique to reconstruct bathymetry using two snapshots of water surface elevations and velocities as data. A Boussinesq model initialized with the data from the first snapshot is used as the engine to compute wave evolution over test bathymetries, which are iterated until a best fit is reached with the second snapshot. Phase speed difference in computed and measured data is used as the basis for updating bathymetry at each iteration. A novel technique is used to minimize the effect of mismatches between velocity and surface elevation, which could otherwise result in significant errors in phase speed estimates. The inversion algorithm is found to reconstruct bathymetries well for a variety of test cases. A particular strength of the methodology is the ability to account consistently for strong, unsteady currents while constructing the inverse bathymetry.
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Information & Authors
Information
Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 126 • Issue 4 • July 2000
Pages: 206 - 214
History
Received: Apr 20, 1999
Published online: Jul 1, 2000
Published in print: Jul 2000
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