3D FDTD Method for Modeling of Seismo-Electromagnetics Disturbance on Crustal Earth

Shabrina, Nabila Husna and Hobara, Yasuhide and Munir, Achmad (2019) 3D FDTD Method for Modeling of Seismo-Electromagnetics Disturbance on Crustal Earth. Makara Journal of Technology, 23 (2). ISSN 2356-4539

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Abstract

The paper deals with the modelling of seismo-electromagnetics disturbance on the crustal earth by use of three-dimensional (3D) finite-difference time-domain (FDTD) method. The model is built up by discretizing the frontier geographical region between Java Island and Sumatra Island in a cylindrical coordinate system-based 3D object. The proposed method is applied to compute and analyze electromagnetics (EM) fields of the observed very low frequency (VLF) wave used for the investigation. Boundary condition of uniaxial perfectly matched layer (UPML) are applied surrounding the area of computation for truncating the object of simulation. The investigation are focused on the propagation time of observed VLF wave and its amplitude variation between the observation point and disturbance pulse. The result shows that the propagation time is significantly affected by the distance of observation point and the permittivity of propagation medium. Meanwhile, the addition pulse associated with the earthquake influences the amplitude of observed VLF wave instead of its frequency.

Item Type:	Article
Subjects:	000 Computer Science, Information and General Works > 000 Computer Science, Knowledge and Systems > 006 Special Computer Methods > 006.6 Computer Graphics, 3D Graphics, Digital Video 500 Science and Mathematic > 530 Physics > 537 Electricity and Electronics
Divisions:	Faculty of Engineering & Informatics > Informatics
Depositing User:	Administrator UMN Library
Date Deposited:	10 Jun 2020 08:25
Last Modified:	25 Aug 2023 08:33
URI:	https://kc.umn.ac.id/id/eprint/12627

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