摘要
本文依据反散射理论，利用Born近似将非线性波动算子线性化，通过格林函数建立散射波场与散射势能的关系；再由WKBJ近似给出随深度变化的格林函数的解析表达式，得到散射波场的解析解；并针对大入射角时振幅的畸变，提出一个用于振幅修正的因子。该方法在ω-P域内实现。
This method includes the following steps:. Linearization of nonlinear wave operator with the aid of inverse scattering theory and Born approximation . Using Green'S function to determine the relation between scattering wave field and scattering potential energy . To derive analytic scattering wave-field solution from the depth-dependent analytic expression of Green's function that is obained by making WKBJ approximation . To offer an amplitude revision operator to cope with amplitude distortion due to big incident angles The method works in w-p domain. It can be used to settle the problem of too weak deep energies which arises when we take seismic data as linear source responses.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
1995年第2期192-200,共9页
Oil Geophysical Prospecting
基金
国家自然基金会资助
中国科学院资助
中国石油天然气总公司资助
大庆石油管理局资助
关键词
波阻抗
反演
地震波
地震勘探
Born approximation, WKBJ approximation, scattering, wave field, wave impedance, inversion
