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Absorbing Boundary Domain for CSEM 3D Modeling

J. Park[1], T.I. Bjørnarå[1], and B.A. Farrelly [2]
[1]Norwegian Geotechnical Institute(NGI), Oslo, Norway
[2]MultiField Geophysics AS, Norway
Published in 2010

In the study, we present an efficient absorbing boundary domain technique whose main application is the 3D finite element (FE) modelling of the so-called controlled-source electromagnetic (CSEM) data, collected for the geophysical exploration. The developed technique is based on the real-value exponentially-stretched coordinates. We have implemented the developed technique using the user-defined PML tool available in the COMSOL Multiphysics RF Module. In the article, we evaluate its performance through several examples of the marine CSEM data.

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