open-access-imgOpen AccessThe 3D Modeling of GATEM in Fractured Random Media Based on FDTD
Qiong Wu,
Yuehan Zhang,
Shanshan Guan,
Dongsheng Li,
Yanju Ji
Publication year2021
Publication title
applied computational electromagnetics society journal
Resource typeJournals
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 Kármán 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 electromagnetic 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.
Subject(s)computer science , diffusion , domain (mathematical analysis) , finite difference time domain method , homogeneous , mathematical analysis , mathematics , optics , physics , statistical physics , thermodynamics
SCImago Journal Rank0.216

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