Computing eddy-current response and current-channeling response of the spheroidal conductor for the separated receiver and transmitter systems |
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| Authors: | Mojtaba Babaei Mirsattar Meshinchi-Asl Hossein Zomorrodian |
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| Institution: | 1. Department of Geophysics, Science and Research Branch, Islamic Azad University, Hesarak, Tehran, 1477893855, Iran
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| Abstract: | In this article the response of the induced eddy-current in an unlimited conduction spheroidal as well as the response of the current-channeling resulted from the presence of the spheroidal in a weakly conducted medium are derived. The common methods are based on receiving electromagnetic induction response from the homocentric and coaxial receiver and transmitter coils which are exactly over the anomaly. As the spheroidal location is unknown in the practice, it is suggested to measure the electromagnetic induction response in a case that the receiver and the transmitter have an arbitrary situation regarding to the anomaly. In this article, eddy-current response and current-channeling response of the spheroid have been computed in a more general case in which at least one axis of spheroid and the dipole axes of the receiver and transmitter coils are on the same plate; however, none of the coils are laid over the anomaly. Using this method, we can determine the location and the depth of the spheroid through fixing the transmitter’s position and of the receivers’ coil movements. |
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