Development of 2D and 3D codes of the velocity-stress staggered-grid finite-difference method for modeling seismic wave propagation

Tomohiro Hayashida, Hiroshi Takenaka, Taro Okamoto

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We have developed 2D and 3D finite-difference codes for modeling seismic wave propagation. These are based on the velocity-stress formulation of the elastodynamic equation, which is discretized by a staggered-grid scheme second-order accurate in time and second- or fourth-order accurate in space. In this article we describe the outline of the codes and boundary conditions we employed. We developed a free surface condition for 3D finite-difference scheme, which is an extension of a free surface condition for 2.5D finite-difference scheme developed by Okamoto(1994). We also present some numerical examples for demonstrating the accuracy of our codes.

Original languageEnglish
Pages (from-to)99-110
Number of pages12
JournalScience Reports of the Kyushu University, Department of Earth and Planetary Sciences
Volume20
Issue number3
Publication statusPublished - 1998
Externally publishedYes

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seismic waves
finite difference method
seismic wave
wave propagation
grids
modeling
elastodynamics
boundary condition
boundary conditions
formulations
code

ASJC Scopus subject areas

  • Geology

Cite this

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AU - Okamoto, Taro

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AB - We have developed 2D and 3D finite-difference codes for modeling seismic wave propagation. These are based on the velocity-stress formulation of the elastodynamic equation, which is discretized by a staggered-grid scheme second-order accurate in time and second- or fourth-order accurate in space. In this article we describe the outline of the codes and boundary conditions we employed. We developed a free surface condition for 3D finite-difference scheme, which is an extension of a free surface condition for 2.5D finite-difference scheme developed by Okamoto(1994). We also present some numerical examples for demonstrating the accuracy of our codes.

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