Abstract：Anelasticity of subsurface medium causes seismic energy absorption and phase-velocity dispersion and reduces the resolution of seismic image consequently.It has been one of the important objectives of seismic modeling and inversion.The micro-mechanism of seismic attenuation and dispersion is complicated and affected by many subsurface medium's environmental conditions.Based upon the Boltzmann superposition principle,the attenuation coefficient and phase-velocity dispersion equations of Kjartansson constant-Q model have been deduced systematically.The energy absorption and phase-velocity dispersion characteristics of eight anelastic models have been compared and analyzed completely.This research is contributive to study on the anelasticity of subsurface medium and related issues such as estimation of quality factor and inverse Q filtering.
