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Detection of Buried Objects and Imaging of Subsurface Resistivity Structure using Loop-Loop EM Methods  

Seol Soon Jee (Pukyong National University, Department of Exploration Engineering)
Song Yoonho (Geophysical Exploration and Mining Division, Korea Institute of Geoscience and Mineral Resource)
Cho Seong-Jun (Geophysical Exploration and Mining Division, Korea Institute of Geoscience and Mineral Resource)
Son Jeong-Sul (Geophysical Exploration and Mining Division, Korea Institute of Geoscience and Mineral Resource)
Chung Seung-Hwan (Geophysical Exploration and Mining Division, Korea Institute of Geoscience and Mineral Resource)
Publication Information
Geophysics and Geophysical Exploration / v.5, no.4, 2002 , pp. 309-315 More about this Journal
Abstract
Conventional electromagnetic (EM) method using small loops as a source and receiver has been used in detection of conductive buried objects like a metal detector or in qualitative estimation of the subsurface conductivity variation. Recently, however, since detection of buried objects and imaging of the subsurface conductivity distribution in a relatively conductive area are in a high demand for environmental and engineering purposes, the quantitative interpretation technique of EM data is actively studied. In this regard, we introduce a brief principle of EM survey and show an example of the detection of buried conductive material and imaging of the subsurface conductivity distribution based on data measured at a test survey area. Through this study, we show that multi-frequency EM surveys using small loops may be a good solution to give quick and detail information of subsurface in a conductive survey area.
Keywords
small loop; EM survey; detection of buried object; resistivity distribution imaging;
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  • Reference
1 Rodi, W., and Mackie, R. L., 2001, Nonlinear conjugate gradients algorithm for 2-D magnetotelluric inversion: Geophysics, 66, 174-187
2 Song, Y, Kim, J.-H., and Chung, S.-H., 2001, An efficient 2.5-D inversion of loop-loop EM data: Proc. 5th SEGJ Internat. Symp., 153-160
3 송윤호, 정승환, 2002, 소형루프 전자탐사의 감도분석 및 가탐심도 추정: 물리탐사, 5, 이번호
4 Hwang, H., and Won, I. J., 2000, Conductivity and Susceptibility mapping using broadband electromagnetic sensors: J. Environ. Eng. Geophys. 5, 31-42
5 송윤호, 정승환, 이상규, 김정호, 황세호, 황학수, 이성곤, 조성준, 이명종, 설순지, 박인화, 2001, 지반물리탐사연구, 1999-R-T102-P-01, 산업자원부
6 Frischknecht, F. C., Labson, V. F, Spies, B. R., and Anderson, W. L., 1991, Profiling methods using small sources in Nabighian, M. N., Ed., Electromagnetic Methods in Applied Geophysics-Applications: Soc. Expl. Geophys., 105-270