Visco-acoustic full waveform inversion aims at retrieving the velocity and attenuation models, but suffers from cross-talks between parameters. Attenuation dispersion leads to equivalent kinematic velocity models, as different combinations of velocity and attenuation have the same kinematic effects for band-limited seismic waves. We propose a hybrid inversion strategy: we incorporate the kinematic relationship to guide the non-linear inversion. The hybrid inversion strategy includes two steps. It first updates the kinematic velocity, and then retrieves the velocity and attenuation models for a fixed kinematic velocity. This hybrid inversion strategy is tested on the Marmousi model dominated by reflections, and compared with the conventional simultaneous inversion strategy. It proves that the hybrid inversion strategy mitigates the cross-talks without involving the Hessian matrix.


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