1887
Volume 74, Issue 1
  • E-ISSN: 1365-2478

Abstract

ABSTRACT

The solution of magnetotelluric equations is used to determine the apparent resistivity and to model the electromagnetic field's behaviour within the Earth. In this paper, we extend the scaled boundary finite element method (SBFEM) to compute the solutions of magnetotelluric equations. The salient features of the proposed framework are that internal features and boundaries are captured through a quadtree decomposition. The SBFEM handles the resulting hanging nodes as a part of local refinement efficiently without needing additional constraints or shape functions. Further, we employ patterns to speed up the computations of the essential matrices without compromising accuracy. The results from the present approach are compared with other approaches, and it is seen that the SBFEM framework is not only efficient but also accurate. The efficacy and robustness are demonstrated with a few examples.

© 2026 European Association of Geoscientists & Engineers. © 2026 European Association of Geoscientists & Engineers.
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2026-01-19
2026-02-14

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/content/journals/10.1111/1365-2478.70122
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On the Scaled Boundary Finite Element Method for Magnetotelluric Modelling
Geophysical Prospecting 74, e70122 (2026); https://doi.org/10.1111/1365-2478.70122
/content/journals/10.1111/1365-2478.70122
/content/journals/10.1111/1365-2478.70122
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  • Article Type: Research Article
Keyword(s): electromagnetics; mathematical formulation; modelling; numerical study; quadtree decomposition; resistivity; scaled boundary finite element method

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