@Article{CiCP-6-269,
author = {Endo , MasashiČuma , Martin and S. Zhdanov , Michael},
title = {Large-Scale Electromagnetic Modeling for Multiple Inhomogeneous Domains},
journal = {Communications in Computational Physics},
year = {2009},
volume = {6},
number = {2},
pages = {269--289},
abstract = {<p style="text-align: justify;">We develop a new formulation of the integral equation (IE) method for
three-dimensional (3D) electromagnetic (EM) field computation in large-scale models
with multiple inhomogeneous domains. This problem arises in many practical applications
including modeling the EM fields within the complex geoelectrical structures
in geophysical exploration. In geophysical applications, it is difficult to describe an
earth structure using the horizontally layered background conductivity model, which
is required for the efficient implementation of the conventional IE approach. As a result,
a large domain of interest with anomalous conductivity distribution needs to be
discretized, which complicates the computations. The new method allows us to consider
multiple inhomogeneous domains, where the conductivity distribution is different
from that of the background, and to use independent discretizations for different
domains. This reduces dramatically the computational resources required for large-scale
modeling. In addition, using this method, we can analyze the response of each
domain separately without an inappropriate use of the superposition principle for the
EM field calculations. The method was carefully tested for the modeling the marine
controlled-source electromagnetic (MCSEM) fields for complex geoelectric structures
with multiple inhomogeneous domains, such as a seafloor with the rough bathymetry,
salt domes, and reservoirs. We have also used this technique to investigate the return
induction effects from regional geoelectrical structures, e.g., seafloor bathymetry and
salt domes, which can distort the EM response from the geophysical exploration target.</p>},
issn = {1991-7120},
doi = {https://doi.org/},
url = {http://global-sci.org/intro/article_detail/cicp/7680.html}
}