Three-dimensional conjugate gradient inversion of CSAMT data

被引：24

作者：

Lin Chang-Hong ^{[1
,2
]}

Tan Han-Dong ^{[1
,2
]}

Shu Qing ^{[3
]}

Tong Tuo ^{[1
]}

Tan Jia-Yan ^{[1
]}

机构：

[1] China Univ Geosci, Sch Geophys & Informat Technol, Beijing 100083, Peoples R China

[2] China Univ Geosci, Minist Educ, Key Lab Geodetect, Beijing 100083, Peoples R China

[3] China Aero Geophys Survey & Remote Sensing Ctr La, Beijing 100083, Peoples R China

来源：

CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION | 2012年 / 55卷 / 11期

关键词：

CSAMT; 3D inversion; Conjugate gradient; RAPID RELAXATION INVERSION; 2-D; ALGORITHM;

D O I：

10.6038/j.issn.0001-5733.2012.11.030

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

CSAMT plays an important role in the field of resource exploration and so on. This work applies the finite difference method to the CSAMT forward modeling. We develop a three-dimensional (3D) conjugate gradient inversion algorithm for inverting CSAMT data using the regularized solution and conjugate gradient inversion method. In the inversion, the computation of Jacobian matrix is replaced by two-time "pseudo-forward" problem solution to make the model updated directly. This algorithm is suitable for inverting CSAMT in the entire field (near field, transition zone and far field) data to obtain 3D geoelectrical structure underground. The synthetic example demonstrates the validity and stability of the 3D conjugate gradient inversion algorithm presented in this paper.

引用

页码：3829 / 3838

页数：10

共 29 条

[1] He MX, 2008, CHINESE J ENG GEOPHY, V5, P439
[2] Hu ZZ, 2006, CHINESE J GEOPHYS-CH, V49, P1226
[3] [胡祖志 Hu Zuzhi], 2005, [石油地球物理勘探, Oil Geophysical Prospecting], V40, P353
[4] 2-D versus 3-D magnetotelluric data interpretation
Ledo, J
[J]. SURVEYS IN GEOPHYSICS, 2005, 26 (05) : 511 - 543
[5] Studies and applications of 2-D CSAMT modeling and inversion with a dipole source and topography
Lei Da
[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2010, 53 (04): : 982 - 993
[6] Li DQ, 2008, CHINESE J GEOPHYS-CH, V51, P1234
[7] Three-dimensional interpretation of sparse survey line MT data: Synthetic examples
Lin Chang-Hong
Tan Han-Dong
Shu Qing
Tong Tuo
Zhang Yu-Mei
[J]. APPLIED GEOPHYSICS, 2012, 9 (01) : 9 - 18
[8] Three-dimensional conjugate gradient inversion of tipper data
Lin Chang-Hong
Tan Han-Dong
Tong Tuo
[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2011, 54 (04): : 1106 - 1113
[9] Lin CH, 2011, APPL GEOPHYS, V8, P1, DOI [10.1007/S11770-010-0266-9, 10.1007/s11770-010-0266-9]
[10] The possibility of obtaining nearby 3D resistivity structure from magnetotelluric 2D profile data using 3D inversion
Lin Chang-Hong
Tan Han-Dong
Tong Tuo
[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2011, 54 (01): : 245 - 256

← 1 2 3 →