Open AccessThe 3D Modeling of GATEM in Fractured Random Media Based on FDTDOpen Access
applied computational electromagnetics society journal
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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