Abstract
In this paper, we compare the dissipation and dispersion characteristics of six visco-acoustic wave equations using numerical methods. We derive the expressions for spectral ratio and phase velocity for the six wave equations, which are used in the analysis. We then compute wave fields by numerically solving the six wave equations for the same model and compare their frequency spectrums, waveforms and quality factors, as calculated by the spectral ratio method. Finally, we conclude that four of the wave equations have analogous dissipation and dispersion characteristics, whereas the other two wave equations are quite different.
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