## Kirchhoff prestack depth migration in velocity
models with and without rotation
of the tensor of elastic moduli:
Orthorhombic and triclinic anisotropy

**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 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 orthorhombic or triclinic
with the rotation of the tensor of elastic moduli.
We apply the Kirchhoff prestack depth migration to
single-layer velocity models with different types of anisotropy:
orthorhombic and triclinic anisotropy with and without
the rotation of the tensor of elastic moduli.
We show the errors of the migrated interface caused by incorrect
velocity models used for migration. The study is limited to P-waves.

### 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 (959 kB).

In: Seismic Waves in Complex 3-D Structures, Report 23,
pp. 71-80, Dep. Geophys., Charles Univ., Prague, 2013.