## Plane waves in viscoelastic anisotropic media
-- II. Numerical examples

**Vlastislav Cerveny** ** & **
**Ivan Psencik**
### Summary

Properties of homogeneous and inhomogeneous
plane waves propagating in unbounded viscoelastic
anisotropic media in an arbitrarily specified
direction are studied numerically. The
analytical expressions and algebraic equations
of the sixth degree derived in the companion
paper (Paper I, this issue) are used for this purpose.
Studied characteristics are phase velocity,
amplitude decay along the propagation direction,
attenuation, attenuation angle and polarization
vector. Simple analytical expressions are used
to describe the behaviour of SH plane waves
propagating in a plane of symmetry of a viscoelastic
anisotropic medium. Characteristics of P
and S plane waves are determined by solving
a complex-valued algebraic equation of the sixth
degree. Combined effects of attenuation and
anisotropy are illustrated on several models of
viscoelastic anisotropic media. The explanation
of the so-called forbidden directions known
from the directional specification of the slowness
vector is given. Non-physical results related
to forbidden directions do not arise in the
algorithm used.

### Keywords

Polarization, seismic anisotropy, seismic waves, viscoelasticity.

### Whole paper

The reprint is available in
PostScript (8727 kB !, colour figures),
GZIPped PostScript
(1268 kB !, colour figures),
and PDF (2579 kB !, colour figures).

*Geophys. J. int.*, **161** (2005), 213-229.

SW3D
- main page of consortium ** Seismic Waves in Complex 3-D Structures **.