Multiwave Amplitude Compensation and Its SensitivityAnalysis to AVO Inversion in Viscoelastic Media  

作　　者：GuHanming ZhuGuangming 等 

机构地区：[1]Department of Geophysics,China University of Geosciences,Wuhan430074 [2]Institute of Applied Geophysics,Xian Engineering College,Xian710054

出　　处：《Journal of China University of Geosciences》2002年第1期86-90,共5页中国地质大学学报（英文版）

基　　金：The study is supported by National Project 863 (No. 820-05-02-03).

摘　　要：We derive formulae of correction for multi-wave geometric spreading and absorption in layered viscoelastic media, this provides the theoretical foundation for true amplitude compensation of field data and for our sensitivity analysis. The imaging matrix at a plane reflector between viscoelastic media can be determined in the frequency domain using linearized reflection coefficients through Born approximation. We quantitatively analyze the sensitivity by studying eigenvalues and eigenvectors of the imaging matrix. The results show that two linear combinations of petrophysical parameters can be determined from the multi-wave AVO inversion in the case of amplitude compensation. Multi-wave AVO contains the information of attenuation in the media. However, the sensitivity of multi-wave AVO inversion to attenuation is small.

关 键 词：viscoelastic media seismic multi-wave amplitude compensation AVO inversion sensi-tivity. 

分 类 号：P631.4[天文地球—地质矿产勘探]