Wave propagation near a fluid-solid interface: A spectral-element approach

Dimitri Komatitsch, Christophe Barnes, Jeroen Tromp

Research output: Contribution to journalArticle

152 Scopus citations

Abstract

We introduce a spectral-element method for modeling wave propagation in media with both fluid (acoustic) and solid (elastic) regions, as for instance in offshore seismic experiments. The problem is formulated in terms of displacement in elastic regions and a velocity potential in acoustic regions. Matching between domains is implemented based upon an interface integral in the framework of an explicit prediction-multicorrection staggered time scheme. The formulation results in a mass matrix that is diagonal by construction. The scheme exhibits high accuracy for a 2-D test case with known analytical solution. The method is robust in the case of strong topography at the fluid-solid interface and is a good alternative to classical techniques, such as finite differencing.

Original languageEnglish (US)
Pages (from-to)623-631
Number of pages9
JournalGeophysics
Volume65
Issue number2
DOIs
StatePublished - 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology

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