## Resolution of prestack depth migration

**Ludek Klimes**
### Summary

Explicit approximate equations describing the physical meaning
of the migrated sections are derived.
The equations are applicable to 3-D elastic migrations
in 3-D isotropic or anisotropic, heterogeneous velocity models.
The imaged combination of elastic parameters (reflectivity)
depends on the selection of the polarizations of the
incident and back-propagated wavefields and on the directions
of propagation.
The migrated section is then approximately equal to the convolution
of the unknown exact reflectivity function
with the local resolution function.
The local resolution function
depends on the aperture and on the imaging function.
The imaging function is determined by the source time function
and by the form of the imaging functional.

### Whole paper

The paper is available in
PDF (1396 kB).

### Revised version

Klimes, L.:
Resolution of prestack depth migration.
*Stud. geophys. geod.*, **56** (2012), 457-482.

In: Seismic Waves in Complex 3-D Structures, Report 21,
pp. 27-45, Dep. Geophys., Charles Univ., Prague, 2011.