DOI QR코드

DOI QR Code

New Equivalent Circuit Model for Interpreting Spectral Induced Polarization Anomalous Data

광대역유도분극 이상 자료의 해석을 위한 새로운 등가회로 모델

  • Shin, Seungwook (Exploration Geophysics and Mining Engineering Dept., Korea Institute of Geoscience and Mineral Resources) ;
  • Park, Samgyu (Exploration Geophysics and Mining Engineering Dept., Korea Institute of Geoscience and Mineral Resources) ;
  • Shin, Dongbok (Department of Geoenvironmental Sciences, Kongju National University)
  • 신승욱 (한국지질자원연구원 탐사개발연구실) ;
  • 박삼규 (한국지질자원연구원 탐사개발연구실) ;
  • 신동복 (공주대학교 지질환경과학과)
  • Received : 2014.10.28
  • Accepted : 2014.11.25
  • Published : 2014.11.30

Abstract

Spectral induced polarization (SIP) is a useful technique, which uses electrochemical properties, for exploration of metallic sulfide minerals. Equivalent circuit analysis is commonly conducted to calculate IP parameters from SIP data. An equivalent circuit model, which indicates the SIP response of rock, has a non-uniqueness problem. For this reason, it is very important to select the proper model for accurate analysis. Thus, this study focused on suggesting a new model, which suitable for the analysis of an anomalous SIP response, such as ore. A suitability of the new model was verified by comparing it with the existing Dias model and Cole-Cole models. Analysis errors were represented as a normalized root mean square error (NRMSE). The analysis result using the Dias model was the NRMSE of 10.50% and was the NRMSE using the Cole-Cole model of 17.03%. Howerver, because the NRMSE of the new model is 0.87%, it is considered that the new model is more useful for analyzing the anomalous SIP data than other models.

Acknowledgement

Grant : 광대역 유도분극을 이용한 정밀 탐광기술 개발

Supported by : 한국에너지기술평가원(KETEP)

References

  1. Bieniawski, Z. T., and Bernede, M. J., 1979, Suggested methods for determining the uniaxial compressive strength and deformability of rock materials: Part 1. Suggested method for determining deformability of rock materials in uniaxial compression, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 16(2), 138-140.
  2. Dias, C. A., 1972, Analytical model for a polarizable medium at radio and lower frequencies, Journal of Geophysical Research, 77(26), 4945-4956. https://doi.org/10.1029/JB077i026p04945
  3. Dias, C. A., 2000, Developments in a model to describe lowfrequency electrical polarization of rocks, Geophysics, 65(2), 437-451. https://doi.org/10.1190/1.1444738
  4. Jougnot, D., Ghorbani, A., Revil, A., Leroy, P., and Cosenza, P., 2010, Spectral induced polarization of partially saturated clay-rocks: a mechanistic approach, Geophysical Journal International, 180(1), 210-224. https://doi.org/10.1111/j.1365-246X.2009.04426.x
  5. Katz, E., and Willner, I., 2003, Probing Biomolecular Interactions at Conductive and Semiconductive Surfaces by Impedance Spectroscopy: Routes to Impedimetric Immunosensors, DNASensors, and Enzyme Biosensors, Electroanalysis, 15(11), 913-947. https://doi.org/10.1002/elan.200390114
  6. Macdonald, J. R., and Johnson, W. B., 2005, Fundamentals of Impedance Spectroscopy, Impedance Spectroscopy, John Wiley & Sons, Inc., 1-26.
  7. Nguyen, P. T., and Amiri, O., 2014, Study of electrical double layer effect on chloride transport in unsaturated concrete, Construction and Building Materials, 50, 492-498. https://doi.org/10.1016/j.conbuildmat.2013.09.013
  8. Niranjan, U., 2004, Simultaneous storage of medical images in the spatial and frequency domain: A comparative study, Biomedical Engineering Online, 3(17), 1-10. https://doi.org/10.1186/1475-925X-3-1
  9. Park, S., and Matsui, T., 1998, Basic study on resistivity of rocks, Butsuri Tansa (Geophysical Exploration), 51(3), 201-209 (in Japanese).
  10. Pelton, W., Ward, S., Hallof, P., Sill, W., and Nelson, P., 1978, Mineral discrimination and removal of inductive coupling with multifrequency, Geophysics, 43(3), 588-609. https://doi.org/10.1190/1.1440839
  11. Revil, A., and Florsch, N., 2010, Determination of permeability from spectral induced polarization in granular media, Geophysical Journal International, 181(3), 1480-1498.
  12. Schiffbauer, J., and Yossifon, G., 2014, Influence of electricdouble-layer structure on the transient response of nanochannels, Physical Review E, 89(5), 053015. https://doi.org/10.1103/PhysRevE.89.053015
  13. Seigel, H., Nabighian, M., Parasnis, D., and Vozoff, K., 2007, The early history of the induced polarization method, The Leading Edge, 26(3), 312-321. https://doi.org/10.1190/1.2715054
  14. Vanhala, H., and Peltoniemi, M., 1992, Spectral IP studies of Finnish ore prospects, Geophysics, 57(12), 1545-1555. https://doi.org/10.1190/1.1443222
  15. Wynn, J. C., and Zonge, K. L., 1975, EM coupling, its intrinsic value, its removal and the cultural coupling problem, Geophysics, 40(5), 831-850. https://doi.org/10.1190/1.1440571
  16. Zonge, K., and Wynn, J., 1975, Recent advances and applications in complex resistivity measurements, Geophysics, 40(5), 851-864. https://doi.org/10.1190/1.1440572