Magnetic interface forward and inversion method based on Padé approximation

作     者：Zhang Chong Huang Da-Nian Zhang Kai Pu Yi-Tao Yu Ping 张冲;黄大年;张凯;浦义涛;于平

作者机构：College of Geo-Exploration Science and Technology Jilin University Changchun 130026 China Mathematics School and Institute Jilin University Changchun 130026 China Bureau of Geophysical Prospecting INC. China National Petroleum Corporation Korla 841001 China 

出 版 物：《Applied Geophysics》 (应用地球物理（英文版）)

年 卷 期：2016年第13卷第4期

页      面：712-720,740页

核心收录：

学科分类：081801[工学-矿产普查与勘探] 081802[工学-地球探测与信息技术] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：supported by Sino Probe-09-01-Integrated geophysical data processing and integrated system for moving platform(No.201311192) Graduate innovation fund of Jilin University(No.2015025) 

主　　题：Pade approximation magnetic interface fand inversion method Taylor seriesexpansion 

摘      要：The magnetic interface forward and inversion method is realized using the Taylor series expansion to linearize the Fourier transform of the exponential function. With a large expansion step and unbounded neighborhood, the Taylor series is not convergent, and therefore, this paper presents the magnetic interface forward and inversion method based on Pade approximation instead of the Taylor series expansion. Compared with the Taylor series, Pade＇s expansion＇s convergence is more stable and its approximation more accurate. Model tests show the validity of the magnetic forward modeling and inversion of Pade approximation proposed in the paper, and when this inversion method is applied to the measured data of the Matagami area in Canada, a stable and reasonable distribution of underground interface is obtained.