- Our method produces the output in the reflection angle at the reflector, and not in the offset ray-parameter. This makes the results more open to interpretation, and potentially allows for consistent quantitative AVA analysis.
- Our method generates angle gathers after and not during migration, thus enabling us to shuttle between the angle and offset domains without re-migrating the data. In addition, the method is much easier to code, and therefore potentially more robust.
- Our method enables inexpensive regularization of the angle-domain, leading to gathers with events that vary smoothly along the angle axis. The increased S/N ratio helps reveal weak events that would otherwise be impossible to find.
- If used in conjunction with prestack Stolt residual migration, the cost of our method becomes trivial, since the images are already transformed to the Fourier-domain. Also, returning to the space-domain after our transformation is less costly, since we reduce the need for a 3-D Fourier transform at every midpoint to that of a 1-D Fourier transform.

Figure 8

4/27/2000