Rickett and Claerbout 1996 observed that for complete reflection seismograms to be constructed, waves must be incident with all incident angles, or slowness values. They suggested that a filter could be constructed and applied that `whitened' the slowness spectrum of the incoming waves, producing coherent events.

The effect of lateral velocity variations, the effect of point sources as opposed to plane waves, and the whitening of the slowness-spectra are investigated in this paper. The phase shift modeling was abandoned in favor of the flexibility of finite-difference simulation.

11/11/1997