The time and space formulation of azimuth moveout |

of azimuth moveout

**Sergey Fomel and Biondo L. Biondi**

Azimuth moveout (AMO) transforms 3-D prestack seismic data from one
common azimuth and offset to different azimuths and offsets.
AMO in the time-space domain is represented by a three-dimensional
integral operator. The operator components are the summation path,
the weighting function, and the aperture. To determine the summation path and
the weighting function, we derive the AMO operator by cascading dip
moveout (DMO) and inverse DMO for different azimuths in the time-space
domain. To evaluate the aperture, we apply a geometric approach,
defining AMO as the result of cascading prestack migration (inversion)
and modeling. The aperture limitations provide a consistent
description of AMO for small azimuth rotations (including zero) and justify the
economic efficiency of the method.

- Introduction
- CASCADING DMO AND INVERSE DMO IN TIME-SPACE DOMAIN
- AMO APERTURE: CASCADING MIGRATION AND MODELING
- Conclusions
- Bibliography
- APPENDIX A: AMO AMPLITUDE
- APPENDIX B: DERIVING THE AMO APERTURE
- About this document ...

2014-12-03