【摘要】 在用有限差分法模拟地震波传播中，差分网格人工边界的反射问题是至关重要的。本文简要介绍了几种消除人工边界反射的方法及其主要优缺点。联立这些不同的吸收边界条件于实际的有限差分计算可以给出好的结果。更多还原

【Abstract】 Reflections generated by artificial boundaries of the finite-difference grids in space are a aevere problem in modelling for seismic wave propogations by using finite-difference methods. In this paper several methods for eliminating the reflections from artificial boundaries are introduced. We point out their advantages and disadvantages. A combination of these absorbing boundary conditions adapted to real structural model can give good results.更多还原