The 3D Modeling of GATEM in Fractured Random Media Based on FDTD

被引：2

作者：

Wu, Qiong ^{[1
]}

Zhang, Yuehan ^{[1
]}

Guan, Shanshan ^{[1
]}

Li, Dongsheng ^{[1
]}

Ji, Yanju ^{[1
,2
]}

机构：

[1] Jilin Univ, Coll Elect Engn & Instrumentat, Changchun 130026, Peoples R China

[2] Jilin Univ, Key Lab Earth Informat Detect Instruments, Minist Educ, Changchun 130026, Peoples R China

来源：

APPLIED COMPUTATIONAL ELECTROMAGNETICS SOCIETY JOURNAL | 2021年 / 36卷 / 11期

基金：

中国国家自然科学基金;

关键词：

FDTD; GATEM; Hurst exponent; random media; FRACTIONAL DIFFUSION ANALYSIS; FINITE-DIFFERENCE; ELECTROMAGNETIC-FIELD; AIRBORNE;

D O I：

10.13052/2021.ACES.J.361102

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Grounded-source airborne time-domain electromagnetic (GATEM) method is an effective detection method of geological survey. The real geological media are rough, self-similar characteristics, and the diffusion process is anomalous diffusion. This paper primarily considers the GATEM responses of a grounded wire source in random media. Von Karman function is used to establish three-dimensional (3D) random media model and the GATEM responses are realized based on 3D finite-difference time-domain (FDTD) method. The method is verified by homogeneous half-space model. The electro-magnetic responses of random abnormal body model are analyzed, and the results show that the abnormal body can be clearly identified. The electromagnetic responses of a fractured model are analyzed, and the results show that the tilt angle of the fault can be reflected.

引用

页码：1401 / 1406

页数：6

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