## Kirchhoff prestack depth migration in velocity
models with and without rotation of the tensor of elastic
moduli: Poorly displayed part of migrated interface
in correct model with triclinic anisotropy

**Vaclav Bucha**
### Summary

We use the Kirchhoff prestack depth migration to calculate
migrated images in simple anisotropic homogeneous
velocity models in order to show the impact of
rotation of the tensor of elastic moduli
on migrated images.
The recorded wave field is generated in models composed of
two homogeneous layers separated by a non-inclined
curved interface.
The anisotropy of the upper layer is triclinic with and without
the rotation of the tensor of elastic moduli.
We apply the Kirchhoff prestack depth migration to correct
single-layer velocity models with the same triclinic anisotropy
(with and without the rotation) as in the upper layer
during the calculation of the recorded wave field.
We show and discuss unexpected poorly displayed part
of the migrated interface in the correct velocity model
used for migration.

### Keywords

3-D Kirchhoff prestack depth migration, anisotropic velocity model,
rotation of the tensor of elastic moduli

### Whole paper

The paper is available in
PDF (1849 kB).

In: Seismic Waves in Complex 3-D Structures, Report 23,
pp. 61-69, Dep. Geophys., Charles Univ., Prague, 2013.