We are developing the theory, numerical algorithm, and prototype implementation of
differential azimuth moveout, a new powerful method for regularizing 3-D seismic reflection data.
In theory, differential azimuth moveout is represented by a partial differential equation, whose role with
respect to integral (Kirchhoff) azimuth moveout is similar to the role of the wave equation with respect to
Kirchhoff migration. In practice, we anticipate differential azimuth moveout to behave as a compact, local,
accurate, and efficiently computed regularization operator. The operator is applied iteratively to produce
regular output from irregular input.