Studia Geophysica et Geodaetica

, Volume 26, Issue 3, pp 238–253 | Cite as

Effects of causal absorption on seismic body waves

  • Vlastislav Červený
  • Antoine B. Frangié
  • J. Vaněk
Article
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Summary

The effects of the causal absorption on seismic wave fields are discussed. Several computer programs for the evaluation of seismic wave fields have been modified to include the causal absorption. The programs are based mostly on matrix and ray methods. The main attention is paid to ray methods. A simple “plane wave algorithm” is described, which can be used along the ray to compute elementary seismograms in dissipative media. For a certain class of signals, commonly used in seismology, its application does not require any convolution or frequency-domain computations, and is only slightly slower than the evaluation of elementary seismograms in non-dissipative media. The derived algorithm even describes the velocity dispersion related to absorption and the decrease of the prevailing frequency of the signal well. Numerical examples are presented, both exact and approximate.

Keywords

Computer Program Convolution Plane Wave Structural Geology Seismic Wave 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© ACADEMIA Publishing House of the Czechoslovak Academy of Sciences 1982

Authors and Affiliations

  • Vlastislav Červený
    • 1
  • Antoine B. Frangié
    • 1
  • J. Vaněk
  1. 1.Institute of GeophysicsCharles UniversityPrague

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