## Kirchhoff prestack depth migration in triclinic
velocity models with differently rotated tensors of
elastic moduli

**Vaclav Bucha**
### Summary

We use the Kirchhoff prestack depth migration to calculate
migrated sections in simple anisotropic homogeneous
velocity models in order to demonstrate the impact of
rotation of the elasticity tensor on migrated images.
The recorded P 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 various rotations of the tensor of elastic moduli.
We apply the Kirchhoff prestack depth migration to
single-layer velocity models with triclinic anisotropy with
and without the rotation of the tensor of elastic moduli
used during the calculation of synthetic seismograms.
We show the errors of the migrated interface caused by incorrect
velocity models used for migration.

### Keywords

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

### Whole paper

The paper is available in
PDF (4153 kB).

*Seismic Waves in Complex 3-D Structures*, **24** (2014), 77-93
(ISSN 2336-3827, online at http://sw3d.cz).