NONREFLECTING BOUNDARY-CONDITION IN FINITE-ELEMENT FORMULATION FOR ANELASTIC-WAVE EQUATION

Numerical modeling of seismic wavefields using finite-difference or fi nite-element methods requires truncation of the model to finite comput ational domains. It is well known that the edges of such truncated mod els give boundary reflections on the synthetic seismograms, An essenti al step to successful numerical modeling is to eliminate these reflect ions. We present a simple scheme that eliminates such boundary reflect ions when computing synthetics. We also demonstrate the efficiency and robustness of our method on a variety of geological models.