1887
Volume 44, Issue 3
  • ISSN: 0812-3985
  • E-ISSN: 1834-7533

Abstract

Self-potential anomalies observed over sulfide ore bodies can be closely associated with electrochemical reactions and the ohmic potential drop within the rocks. Self-potential surveys based on laboratory measurements of electrochemical potentials allow us either to measure the amplitude of the anomalies generated by this mechanism or to determine the model parameters. In order to achieve these goals, two sheets of zinc and copper were joined together to simulate sheet-like ore bodies. Self-potential surveys were conducted over 684 electrodes with the purpose of revealing the influence of various angles of the sheet. In a laboratory experiment, four different inclinations were chosen to perform the forward modelling. The last part of this paper involves the inversion of measured data to recover the distribution of generated self-potential signals. The inversion results show a satisfactory agreement with the laboratory measured data. Finding the geometry of the buried source from the shape of the SP response is not intended as it is fixed in advance. The first aim of this paper is to show how the SP response is affected under the presence of a 2D conductive structure (sheet-like) in tank experiments. The second aim is to obtain one of the model parameters (coefficient M) using data regression.

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2013-09-01
2026-01-13

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References

  1. Abdelrahman E. M. El-Araby H. M. Hassaneen A. G. Hafez M. A. 2003 New methods for shape and depth determinations from SP data: Geophysics 68 1202 1210 10.1190/1.1598112
    https://doi.org/10.1190/1.1598112 [Google Scholar]
  2. Atchuta Rao D. Ram Babu H. V. 1983 Quantitative interpretation of SP anomalies due to two dimensional sheet-like bodies: Geophysics 48 1659 1664 10.1190/1.1441446
    https://doi.org/10.1190/1.1441446 [Google Scholar]
  3. Bolève A. Crespy A. Revil A. Janod F. Mattiuzzo J. L. 2007 Streaming potentials of granular media: influence of the Dukhin and Reynolds numbers: Journal of Geophysical Research 112 B08204 10.1029/2006JB004673
    https://doi.org/10.1029/2006JB004673 [Google Scholar]
  4. Cooper G. R. J. 1997 SPINV: self-potential data modeling and inversion: Computers & Geosciences 23 1121 1123 10.1016/S0098‑3004(97)00098‑8
    https://doi.org/10.1016/S0098-3004(97)00098-8 [Google Scholar]
  5. Corry, C. E., DeMoully, G. T., and Gerety, M. T., 1983, Field procedure manual for self-potential surveys: Zonge Engineering and Research Organization.
  6. Corwin, R. F., 1990, The self-potential method for environmental and engineering applications, in S. H. Ward, ed., Geotechnical and environmental geophysics vol. 1: Society of Exploration Geophysicists, 127–145.
  7. Crespy A. Bolève A. Revil A. 2007 Influence of the Dukhin and Reynolds numbers on the apparent zeta potential of granular media: Journal of Colloid and Interface Science 305 188 194 10.1016/j.jcis.2006.09.038
    https://doi.org/10.1016/j.jcis.2006.09.038 [Google Scholar]
  8. de Witte L. 1948 A new method of interpretation of self-potential field data: Geophysics 13 600 608 10.1190/1.1437436
    https://doi.org/10.1190/1.1437436 [Google Scholar]
  9. Fox R. W. 1830 On the electromagnetic properties of metalliferous veins in the mines of Cornwall: Philosophical Transactions of the Royal Society of London 120 399 414 10.1098/rstl.1830.0027
    https://doi.org/10.1098/rstl.1830.0027 [Google Scholar]
  10. Long H. L. Hao J. Q. 2005 The theoretical and experimental research on self-potential tomography: Chinese Journal of Geophysics 48 1408 1415
    [Google Scholar]
  11. Lowrie, W., 1997, Fundamentals of geophysics: Cambridge University Press.
  12. Meiser P. 1962 A method of quantitative interpretation of self-potential measurements: Geophysical Prospecting 10 203 218 10.1111/j.1365‑2478.1962.tb02009.x
    https://doi.org/10.1111/j.1365-2478.1962.tb02009.x [Google Scholar]
  13. Paul M. K. 1965 Direct interpretation of self-potential anomalies caused by inclined sheets of infinite horizontal extension: Geophysics 30 418 423 10.1190/1.1439596
    https://doi.org/10.1190/1.1439596 [Google Scholar]
  14. Ram Babu H. V. Atchuta Rao D. 1988 A rapid graphical method for the interpretation of the self-potential anomaly over a two dimensional inclined sheet of finite depth extent: Geophysics 53 1126 1128 10.1190/1.1442551
    https://doi.org/10.1190/1.1442551 [Google Scholar]
  15. Revil A. Trolard F. Bourrié G. Castermant J. Jardani A. Mendonça C. A. 2009 Ionic contribution to the self-potential signals associated with a redox front: Journal of Contaminant Hydrology 109 27 39 10.1016/j.jconhyd.2009.07.008
    https://doi.org/10.1016/j.jconhyd.2009.07.008 [Google Scholar]
  16. Revil A. Mendonca C. A. Atekwana E. A. Kulessa B. Hubbard S. S. Bohlen K. J. 2010 Understanding biogeobatteries: where geophysics meets microbiology: Journal of Geophysical Research: Biogeosciences 115 G00G02 1 22 10.1029/2009JG001065
    https://doi.org/10.1029/2009JG001065 [Google Scholar]
  17. Roy A. Chowdhury D. K. 1959 Interpretation of self-potential data for tabular bodies: Journal of Scientific and Engineering Research 3 35 54
    [Google Scholar]
  18. Sato M. Mooney H. M. 1960 The electrochemical mechanism of sulphide self-potentials: Geophysics 25 226 249 10.1190/1.1438689
    https://doi.org/10.1190/1.1438689 [Google Scholar]
  19. Skianis G. E. Papadopoulos T. D. Vaiopoulos D. A. 1991 1-D and 2-D spatial frequency analysis of SP field anomalies produced by a polarized sphere: Pure and Applied Geophysics 137 251 260 10.1007/BF00876991
    https://doi.org/10.1007/BF00876991 [Google Scholar]
  20. Skianis G. Papadopoulos T. Vaiopoulos D. Nikolaou S. 1995 A new method of quantitative interpretation of SP anomalies produced by a polarized inclined sheet: Geophysical Prospecting 43 677 691 10.1111/j.1365‑2478.1995.tb00274.x
    https://doi.org/10.1111/j.1365-2478.1995.tb00274.x [Google Scholar]
  21. Skoog, D. A., West, D. M., Holler, J. F., and Crouch, S. R., 2004, Fundamentals of analytical chemistry: Thomson-Brooks.
  22. Yungul S. 1950 Interpretation of spontaneous polarization anomalies caused by spheroidal orebodies: Geophysics 15 237 246 10.1190/1.1437597
    https://doi.org/10.1190/1.1437597 [Google Scholar]
/content/journals/10.1071/EG12032
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Forward modelling and inversion of self-potential anomalies caused by 2D inclined sheets
Exploration Geophysics 44, 176 (2013); https://doi.org/10.1071/EG12032
/content/journals/10.1071/EG12032
/content/journals/10.1071/EG12032
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  • Article Type: Research Article
Keyword(s): 2D modelling; geobattery; inclined sheet; inversion; self-potential anomaly

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