## Zero-order ray-theory Green tensor
in a heterogeneous anisotropic elastic medium

**Ludek Klimes**
### Summary

Although synthetic seismograms can, in many cases,
be generated by direct numerical methods,
approximate analytical ray-theory solutions
are often very useful in forward and especially inverse
problems of seismic wave propagation in complex 3-D media.
In this paper,
the frequency-domain zero-order ray-theory Green tensor
in a heterogeneous anisotropic elastic medium is derived from
the zero-order ray-theory approximation using
the representation theorem applied in ray-centred coordinates.

### Keywords

Ray theory, Green tensor, travel time, amplitude,
anisotropy, heterogeneous media,
paraxial approximation, wave propagation.

### Whole paper

The reprint is available in
PDF (129 kB).

*Stud. geophys. geod.*, **56** (2012), 373-382.