We apply our method to a North Sea dataset and compare the image with the ones obtained from downward continuation and reverse-time migration. The image obtained by plane-wave migration in tilted coordinates is better than the image obtained from standard downward continuation. The steeply dipping salt edge is imaged by one-way plane-wave migration in tilted coordinates, but it is missing in the image obtained by downward continuation. The plane-wave migration results are also comparable to those obtained by reverse-time migration and produces similar horizontal and vertical CIGs, while its computational cost is much less than reverse-time migration. The dip-dependent ADCIGs merged from horizontal and vertical CIGs are robust and provide useful moveout information for reflectors with a wide range of dips.
Figure 6 Vertical CIGs at z=1850m: (a) offset domain CIGs obtained by reverse-time migration; (b) offset domain CIGs obtained by plane-wave migration in tilted coordinates; (c) ADCIGs obtained by reverse-time migration; (d) ADCIGs obtained by plane-wave migration in tilted coordinates.