Absorbing Boundary Conditions for 3D elastic TTI modeling
Abstract
In this paper, we propose stable low-order Absorbing Boundary
Conditions (ABC) for elastic TTI modeling. Their derivation
is justified in elliptic TTI media but it turns out that they
are directly usable to non-elliptic TTI configurations. Numerical
experiments are performed by using a new elastic tensor
source formula which generates P-waves only in an elliptic
TTI medium. Numerical results have been performed in 3D
to illustrate the performance of the ABCs.