روش تركيبي مرز جاذب در مدل‌سازي عددي انتشار امواج آكوستيك دو بعدي در زمين

A persistent problem in the numerical modeling of wave propagation is the artificial reflections from boundaries introduced by a truncated computational domain. Absorbing boundary condition, which is based on one-way wave equation, is the most computationally efficient method. However, its quality is less than perfectly matched layer. In this paper,we introducea hybrid method proposed based on the solutions of one-way and two-way wave equation in a boundary layer to improve the absorbing efficiency of absorbing boundary condition. We show that the proposed method decreasesthe artificial boundary reflections significantly.The proposed method has been implemented using a second order approximation of finite difference modeling of acoustic wave propagation in a synthetic salt model