|Table of Contents|

Jointly Inversion of Multi-source Data of Frequency-domain Controlled Source Electromagnetic Method(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2021年第06期
Page:
1057-1068
Research Field:
应用地球物理
Publishing date:

Info

Title:
Jointly Inversion of Multi-source Data of Frequency-domain Controlled Source Electromagnetic Method
Author(s):
HAN Si-xu1; 2;  CHEN Wei-ying3; 4; 5*;  XUE Guo-qiang3; 4; 5; 6;  LEI Kang-xin3; 4; 5;  SONG Wan-ting3; 4; 5
(1. Guangdong Provincial Geophysical Prospecting Team, Guangzhou 510800, Guangdong, China; 2. Guangdong Provincial Institute of Geological and Geophysical Engineering Survey, Guangzhou 510800, Guangdong, China; 3. Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China; 4. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; 5. Innovation Academy for Earth Science, Chinese Academy of Sciences, Beijing 100029, China; 6. Northwest Nonferrous Geological and Mining Group Co., Ltd., Xi'an 710054, Shaanxi, China)
Keywords:
frequency-domain;  controlled source electromagnetic method;  multi-source data;  joint inversion;  ARIA;  formation wave;  3D model
PACS:
P631; P319
DOI:
10.19814/j.jese.2021.07002
Abstract:
In the traditional land frequency-domain controlled source electromagnetic method(FCSEM), an observing point generally only corresponds to a single transmitting source. Thus, it is necessary to explore the multi-source joint inversion method of land FCSEM. Firstly, the joint inversion of multi-source data was realized by using one-dimensional ARIA. Then, based on the three-layer model, the effects of different source combinations and source numbers on the joint inversion were analyzed. Finally, the results of this joint inversion on complex models were evaluated. The results show that compared with the single source inversion, joint inversion of multi-source data improves the accuracy of inversion results, making the obtained geoelectric parameters are closer to the real value especially when the models are more complicated; with the increase of the number of sources involved in the inversion, the results will be further improved. Except the combined broadside sources are not sensitive to the resistive target, the other forms of combined sources are all sensitive to the conductive and resistive bodies. The above research is willing to provide a guide for establishing a reasonable observation technology of multi-source FCSEM and processing pratical data.

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Last Update: 2021-11-10