摘要
本文对有限差分法弹性波场三分量正演模拟中遇到的人为边界反射问题进行了研究,分别获得2-D横向各向同性介质中U_x,U_z,与U_y位移分量模拟时的边界吸收条件.从吸收边界上反射系数与入射角之间的关系可以说明,本文提出的边界吸收条件的吸收能力比较强.
In this paper, we studied absorbing boundary conditions in the Ux, Uy and Uz component forward Modelling with FDM (Finite Difference Method), and obtained partial differential equations for Ux, Uy and Uz component to eliminate artifical boundary reflection with absorbing condition, The reletion between reflection coefficients and incidence angle reveals that the ability of absorbing condition is powerful.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
1993年第4期519-527,共9页
Chinese Journal of Geophysics
基金
国家自然科学基金
关键词
同性介质
差分法
弹性波
地震勘探
2-D TIM
Finite difference method
3-component elastic wave- field
Forward modelling
Absorbing boundary condition.
