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A multi-domain decomposition-based Fourier finite element method for the simulation of 3D marine CSEM measurements

descriptionPublicationkeyboard_double_arrow_right Article 25 Jan 2017 Spain Publisher:Springer Science and Business Media LLCJournal:Computational Geosciences, volume 21, pages 345-357 (issn: 1420-0597, eissn: 1573-1499,

Authors: Shaaban A. Bakr; Shaaban A. Bakr; David Pardo; David Pardo; David Pardo;

doi: 10.1007/s10596-017-9615-6

handle: 20.500.11824/364

A multi-domain decomposition-based Fourier finite element method for the simulation of 3D marine CSEM measurements

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Abstract

We introduce a multi-domain decomposition Fourier finite element (MDDFFE) method for the simulation of three-dimensional (3D) marine controlled source electromagnetic measurement (CSEM). The method combines a 2D finite element (FE) method in two spatial dimensions with a hybrid discretization based on a Fourier FE method along the third dimension. The method employs a secondary field formulation rather than the total field formulation. We apply the MDDFFE method to several synthetic marine CSEM examples exhibiting bathymetry and/or multiple 3D subdomains. Numerical results show that the use of the MDDFFE method reduces the problem size by as much as 87 % in terms of the number of unknowns, without any sacrifice in accuracy.

Country

Spain

Related Organizations

Assiut University
Egypt
University of the Basque Country
Spain
BCAM - BASQUE CENTER FOR APPLIED MATHEMATICS ASOCIACION
Spain
Basque Center for Applied Mathematics
Spain
Ikerbasque
Spain

Keywords

Finite element method, Multi-domain decomposition, Secondary field formulation, Fourier series, Marine CSEM

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