## Comment to "qS-waves in a vicinity of the axis of symmetry
of homogeneous transversely isotropic media", by M. Popov,
G.F. Passos, and M.A. Botelho [Wave Motion 42 (2005) 191-201]

**Vaclav Vavrycuk**
### Summary

A new asymptotic formula for S waves propagating near the symmetry axis in
transversely isotropic elastic media derived by Popov et al.
[Wave Motion 42 (2005) 191-201] is discussed and commented. It is shown
that the formula is a modification of the previously published formula
by Vavrycuk [Geophys. J. Int. 138 (1999) 581-589]. The formula of
Popov et al. is less accurate and valid under more restrictive conditions
than that of Vavrycuk.

### Whole paper

The reprint is available in
PDF (193 kB).

*Wave Motion*, **44** (2006), 128-136.

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