Version 1
: Received: 30 August 2024 / Approved: 30 August 2024 / Online: 30 August 2024 (13:02:12 CEST)
Version 2
: Received: 21 October 2024 / Approved: 21 October 2024 / Online: 21 October 2024 (13:54:17 CEST)
Version 3
: Received: 22 October 2024 / Approved: 22 October 2024 / Online: 22 October 2024 (13:42:17 CEST)
How to cite:
Suzuki, A. Development of a Three-Dimensional Inversion Program for Magnetotellurics Using Finite Volume and Adjoint State Method. Preprints2024, 2024082236. https://doi.org/10.20944/preprints202408.2236.v3
Suzuki, A. Development of a Three-Dimensional Inversion Program for Magnetotellurics Using Finite Volume and Adjoint State Method. Preprints 2024, 2024082236. https://doi.org/10.20944/preprints202408.2236.v3
Suzuki, A. Development of a Three-Dimensional Inversion Program for Magnetotellurics Using Finite Volume and Adjoint State Method. Preprints2024, 2024082236. https://doi.org/10.20944/preprints202408.2236.v3
APA Style
Suzuki, A. (2024). Development of a Three-Dimensional Inversion Program for Magnetotellurics Using Finite Volume and Adjoint State Method. Preprints. https://doi.org/10.20944/preprints202408.2236.v3
Chicago/Turabian Style
Suzuki, A. 2024 "Development of a Three-Dimensional Inversion Program for Magnetotellurics Using Finite Volume and Adjoint State Method" Preprints. https://doi.org/10.20944/preprints202408.2236.v3
Abstract
The finite volume method (FVM) is a kind of numerical analysis method that is simple and can take into account the topography as the finite element method (FEM). The adjoint state method (ASM) can easily and efficiently calculate the gradient vector of the objective function for the inversion. We developed a program to apply these methods to 3-D Magnetotelluric (MT) inversion and verified it using test models. In the forward modelling, it was confirmed that the program could perform analysis properly and efficiently considering topography and subsurface resistivity heterogeneity. Furthermore, we conducted the inversion using a synthetic open dataset and could reconstruct the true model of the dataset. The comparison with the previous work revealed that the computation time was comparable in spite of the fact that we calculated without MPI implementation, which the previous work used.
Keywords
Magnetotellurics; inversion; Finite volume method; Adjoint state method
Subject
Environmental and Earth Sciences, Geophysics and Geology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
