I obtain images comparable to shot-profile migration results by
combining wave-equation datuming and Kirchhoff migration into
a layer-stripping migration method. In this case, eikonal traveltimes produce
satisfactory images because the velocity model is subdivided
and traveltimes are calculated
under conditions where finite-differencing the eikonal equation is valid.
By dividing the imaging problem in this
way, the traveltimes are better behaved and some multiple arrivals
are accounted for.