利用Extrapolation Tikhonov正则化算法进行重力梯度三维密度反演

Saved in:
Bibliographic Details
Published in应用地球物理：英文版 Vol. 12; no. 2; pp. 137 - 146
Main Author 刘金钊 柳林涛 梁星辉 叶周润
Format Journal Article
LanguageEnglish
Published 2015
Subjects
Extrapolation
Tikhonov正则化方法
权函数
深度加
特征向量
重力梯度
Online AccessGet full text

Cover

More Information
Bibliography:extrapolated Tikhonov regularization, depth weighting, gravity gradient tensor, eieenvector
11-5212/O
We use the extrapolated Tikhonov regularization to deal with the ill-posed problem of 3D density inversion of gravity gradient data. The use of regularization parameters in the proposed method reduces the deviations between calculated and observed data. We also use the depth weighting function based on the eigenvector of gravity gradient tensor to eliminate undesired effects owing to the fast attenuation of the position function. Model data suggest that the extrapolated Tikhonov regularization in conjunction with the depth weighting function can effectively recover the 3D distribution of density anomalies. We conduct density inversion of gravity gradient data from the Australia Kauring test site and compare the inversion results with the published research results. The proposed inversion method can be used to obtain the 3D density distribution of underground anomalies.
Liu Jin-Zhao, Liu Lin-Tao, Liang Xing-Hui, Ye Zhou-Run （1. First Crust Monitoring and Application Center, China Earthquake Administration, Tianjin 300180, China. 2. State Key Laboratory of Geodesy and Earth＇s Dynamics, Institute of Geodesy and Geophysics, CAS, Wuhan, 430077, China.）
ISSN:1672-7975
1993-0658