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Studia Geophysica et Geodaetica

, Volume 60, Issue 2, pp 332–347 | Cite as

A finite-volume approach for 2D magnetotellurics modeling with arbitrary topographies

  • Hua-Kun Du
  • Zheng-Yong Ren
  • Jing-Tian Tang
Article

Abstract

A novel finite-volume approach for complicated 2D magnetotellurics (MT) problems with arbitrarily surface topography is presented. An edge-surface integral balance equation is derived by employing a conservation law on the generalized 2D MT boundary value problem. A triangular grid is used to discretize the 2D conductivity model so that we can deal with arbitrarily complex cases with surface topography. The node-centered finite-volume algorithm is used to derive the final system of linear equations on a dual mesh of the triangular grid, which is solved by a robust direct solver. Three synthetic models verify the accuracy of the presented finite-volume algorithm and its capability of dealing with surface topography.

Keywords

magnetotellurics unstructured grid finite-volume method 

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Copyright information

© Institute of Geophysics of the ASCR, v.v.i 2016

Authors and Affiliations

  • Hua-Kun Du
    • 1
    • 2
    • 3
  • Zheng-Yong Ren
    • 1
    • 2
    • 3
  • Jing-Tian Tang
    • 1
    • 2
    • 3
  1. 1.Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment MonitoringCentral South University, Ministry of EducationHunan ProvinceChina
  2. 2.Key Laboratory of Non-ferrous Resources and Geological Hazard DetectionHunan ProvinceChina
  3. 3.School of Geosciences and Info-PhysicsCentral South UniversityChangshaChina

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