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Frequency-domain EM Response of a Conducting Sphere to a Magnetic Dipole Field Using Fast Continued Fraction Expansion
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Near Surface Geoscience 2014 - 20th European Meeting of Environmental and Engineering Geophysics, Sep 2014, Volume 2014, p.1 - 5
Abstract
The electromagnetic response of a conductive sphere excited by an alternating magnetic field has been a traditionally important problem. In this study, for calculation of general solution in frequency domain of a conductive sphere in a magnetic dipole field, coordinates rotation and continued fraction expansion are applied. Coordinates rotation for transmitter and receiver location, respectively produces very fast and simple calculation process. The precise results are allowed for more wide range of response function with continued fraction expansion. This enhanced algorithm could be applied to examine the result of numerical modeling like FEM. It also can be quite helpful for in-situ application at fast speed on interpretation which can sweep large minefield and borehole 3D modelling.