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ON MODEL EXPERIMENTS OF TEM DIPOLE CONFIGURATION |
LIU Chang-sheng, LIN Jun, JI Yan-ju, WU Guo-qiang |
Key Lab of Geo-Exploration and Instrumentation (Jilin Univ), Ministry of Education, Changchun 130026, China |
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Abstract A mass of model experiments are performed. By studying the response of several typical conductive bodies in dipole transient electromagnetic systems, this paper analyses the exploration resolving power of dipole configuration, discusses the problems about dipolar distance and the way to fix the detecting point, and finally concludes the working characteristics of this configuration. The forms of response curves of these bodies in dipole transient electromagnetic measurement are complicated and more arduous to interpret. However, the disturbing of primary field is small for dipole configuration and it has strong ability to distinguish dissimilar bodies from background. Moreover, it is very convenient and flexible. So it adapts to be used in the transient electromagnetic detecting of shallow seafloor and other special environment.
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Received: 10 January 2006
Published: 24 October 2006
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