Elementary seismograms of seismic body waves in dissipative media

Vlastislav Cerveny & Antoine B. Frangie


Approximate expressions for elementary seismograms of seismic body waves propagating in media with small causal absorption are derived. Special attention is devoted to modulated signals with a smooth envelope, for which especially simple formulae were obtained. The derived expressions give a good picture of all important effects of causal absorption, viz., the frequency dependent exponential decrease of amplitudes, the velocity dispersion related to absorption, and the decrease of the prevailing frequency.

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Stud. geophys. geod., 24 (1980), 365-372.
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