f Investigating the Differential Waveform Inversion

In the context of velocity estimation, we propose the Differential Waveform Inversion approach defined in the data domain. For reflected data, it first consists of migrating a single shot. From the updated velocity model, we then compute the data at the next shot position and compare it with the observed data. The minimization of the misfit appears to be equivalent to the Differential Semblance Optimization approach formulated in the depth migrated domain, at least for reflected data.