摘要
在Cerjan吸收边界和PML吸收边界的基础上提出了基于Cerjan衰减函数的PML吸收边界。通过两种吸收边界条件下地震波场模拟计算比较表明,后者具有吸收更干净且能够吸收各种角度的边界反射等优点,并且保留了前者操作简单的特点,计算时间少,适用于二维情形下的地震波数值模拟。
This paper proposes PML absorbing boundary based on Cerjan attenuation function based on the study of Cerjan absorbing boundary and PMI, absorbing boundary. Wave field modeling calculations by using two absorl）ing boundary conditions show that PML absorbing boundary based on Cerjan attenuation function can perform absorption much more clearly and absorb the boundary reflection from various angles. Besides,its operation is easy,the calculation time is short, and it is suitable to seismic wave numerical modeling in two-dimensional situation.
出处
《物探与化探》
CAS
CSCD
2012年第6期996-1000,共5页
Geophysical and Geochemical Exploration
基金
国家自然科学基金资助项目(50974081)
国家自然科学基金资助项目(41204077)
山东科技大学研究生科技创新基金资助项目(YCB120122)
关键词
地震波
数值模拟
有限差分
Cerjan衰减函数
PML
seismic wave
numerical modeling
finite difference
Cerjan attenuation function
PML absorbing boundary
