emg3d: A multigrid solver for 3D electromagnetic diffusion

Journal article (2019)

Authors

D. Werthmüller Applied Geophysics and Petrophysics - CEG
W.A. Mulder Applied Geophysics and Petrophysics - CEG , Shell Global Solutions International B.V.
E.C. Slob Applied Geophysics and Petrophysics - CEG
Research Group
Applied Geophysics and Petrophysics (CEG) (TU Delft)
Copyright: © 2019 D. Werthmüller, W.A. Mulder, E.C. Slob
DOI
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https://doi.org/10.21105/joss.01463
More Info
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Published Date

2019

Language

English

Faculty

Civil Engineering & Geosciences

Department

Geoscience and Engineering

Research Group

Applied Geophysics and Petrophysics

Abstract

Controlled-source electromagnetic (CSEM) surveys are a common geophysical investigationtool in the search for, amongst other, groundwater, hydrocarbons, and minerals. The nu-merical modelling of CSEM data requires the solution of the Maxwell equations. These canbe simplified in the particular case of CSEM, as the frequencies used in surveys are usuallysufficiently low to ignore any displacement currents. A diffusive problem remains, which hasthe resulting system of equations given in the frequency domain byE