Determination of inverse depths using direct Boussinesq modeling

A. B. Kennedy*, R. A. Dalrymple, J. T. Kirby, Q. Chen

*Corresponding author for this work

Research output: Contribution to journalArticle

27 Scopus citations

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 current while constructing the inverse bathymetry.

Original languageEnglish (US)
Pages (from-to)206-214
Number of pages9
JournalJournal of Waterway, Port, Coastal and Ocean Engineering
Volume126
Issue number4
DOIs
StatePublished - Jul 1 2000

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Water Science and Technology
  • Ocean Engineering

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