Quasi-spherical approach for seismic wave modeling in a 2-D slice of a global Earth model with lateral heterogeneity

Genti Toyokuni, Hiroshi Takenaka, Yanbin Wang, Brian L.N. Kennett

研究成果: Article査読

19 被引用数 (Scopus)

抄録

For iterative calculations of synthetic seismograms with limited computer resources, a fast and accurate modeling method is needed. Axisymmetric modeling has often been used in global seismology to restrict computational time and storage. This approach can correctly model 3-D geometrical spreading effects with computational times comparable to 2-D methods, but cannot treat asymmetric structures about the source axis. To overcome this problem, a new approach is proposed for seismic wave propagation in a 2-D slice through a global Earth model with lateral heterogeneity. The elastodynamic equation for spherical coordinates is not solved in the conventional spherical domain but instead in the "quasi-spherical domain" using the finite-difference method. The validity and efficiency of this technique is illustrated with numerical examples including subduction zone structures.

本文言語English
ページ(範囲)1-4
ページ数4
ジャーナルGeophysical Research Letters
32
9
DOI
出版ステータスPublished - 2005 5 16
外部発表はい

ASJC Scopus subject areas

  • 地球物理学
  • 地球惑星科学(全般)

フィンガープリント

「Quasi-spherical approach for seismic wave modeling in a 2-D slice of a global Earth model with lateral heterogeneity」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル