## Tests of two-point paraxial traveltime formula
in inhomogeneous anisotropic media

**Umair bin Waheed**,
**Vlastislav Cerveny**,
**Einar Iversen** and
**Ivan Psencik**
### Summary

On simple numerical examples, we study efficiency and accuracy of the two-point
paraxial traveltime formula designed for applications in inhomogeneous anisotropic
media. Although the formula may be used for general layered anisotropic media,
we concentrate on 2D models of smoothly inhomogeneous media only. We start with
isotropic models, in which we study effects of inhomogeneity, distance of the two
points, between which the formula is applied, etc. on the accuracy and extent of
its applicability. We illustrate efficiency of the formula on an experiment,
in which we calculate traveltime perturbations caused by perturbations of the
source and receivers locations. Similar tests are made for inhomogeneous, weakly
anisotropic models.

### Whole paper

The paper is available in
PDF (961 kB).

In: Seismic Waves in Complex 3-D Structures, Report 22,
pp. 113-127, Dep. Geophys., Charles Univ., Prague, 2012.