## Weak-contrast reflection/transmission coefficients in weakly
anisotropic elastic media: P-wave incidence

**Vaclav Vavrycuk**
### Summary

We present approximate displacement and energy PP and PS
reflection/transmission coefficients for weak-contrast interfaces
in general weakly anisotropic elastic media. The coefficients
were obtained by applying first-order perturbation theory and then
expressed in a compact and relatively simple form. The formulae
can be used for arbitrary orientations of the incidence plane and interface,
without the need to transform the elasticity parameters to a local
Cartesian coordinate system. The accuracy of the approximate formulae
is illustrated for the PS reflection coefficient for two synthetic
models. For these models, we also study the possibility of using
the approximate PP reflection coefficient in the inverse problem.

### Keywords

Elastic wave theory, scattering, seismic anisotropy,
seismic waves.

### Whole paper

The scanned reprint is available in
PDF 300dpi (764 kB)
with the scanned
erratum in PDF 300dpi (14 kB).

*Geophys. J. int.*, **138** (1999), 553-562.
Erratum: *Geophys. J. int.*, **140** (2000), 248.

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