and

We will demonstrate an example of 2.5D modeling for an anisotropic medium, by using a second order accurate central finite-difference scheme throughout the variables of the staggered grid. We will show and example of HTI anisotropic medium modeling for reflected qP, qS1 and qS2 waves. The calculation time with 2.5D modeling is considerably lower than in the case of a 3D modeling for the same medium