Three Component Time-domain Electromagnetic Surveying: Modeling and Data Analysis
A comparative numerical modeling using single component (measuring the vertical component of the field, Hz) time-domain electromagnetic measurements (TEM) receiver and three component (measuring Hx, Hy and Hz) TEM receiver was undertaken. A forward mod-eling approach was used to compute the voltage response of half-space containing one or more conductive bodies excited by a bi-polar square waveform. Although this was a conductor scatter-ing, it was particularly useful as a practical use for the unexploded ordnance (UXO) detection. Unlike the single component data, results from the three component data are unambiguous as to the location and orientation of conductors. Measuring adding of the horizontal components of the secondary magnetic field leads to not only provide the best indication of target location, but also can be used to determine size, orientation, and characteristics of the targets, especially for the horizontal extending target. A three-component TEM field experiment at a well-documented wells site, NCU campus, were consistent with the effects predicted by our theoretical modeling. As a result, the 3-component TEM survey is a must for the high resolution EM in the engineering purpose.
Chow-Son Chen Wei-Hsuan Chiu Ching-Ren Lin
Institute of Geophysics,National Central University,Taiwan Institute of Earth Sciences,Academia Sinica,Taiwan
国际会议
Progress in Electromagnetics Research Symposium 2008(2008年电磁学研究新进展学术研讨会)(PIERS 2008)
杭州
英文
1-6
2008-03-24（万方平台首次上网日期，不代表论文的发表时间）