Share This Article:

2-D Resistivity Study: The Horizontal Resolution Improvement by Introducing the Enhancing Horizontal Resolution (EHR) Technique

Abstract Full-Text HTML Download Download as PDF (Size:1831KB) PP. 1-6
DOI: 10.4236/ojg.2013.32B001    3,106 Downloads   4,385 Views  

ABSTRACT

2-D resistivity method is an indirect method to the shallow subsurface survey for maintaining the geo-environment. It is used to measure the apparent resistivity of subsurface. EHR technique was developed in order to get detail and deeper penetration for shallow subsurface study. In this study, 2-D resistivity with Enhancing Horizontal Resolution (EHR) technique is adopted to map and characterize the shallow subsurface (mineral exploration, geology, engineering and environment) using Pole-dipole array. The locations are Pagoh, Johor; Nusajaya, Johor and Puchong, Selangor (Malaysia). The study associated with mineral exploration is Pagoh, Johor while for Nusajaya, Johor is associated with geology and Puchong, Selangor is associated with engineering and environment. The 2-D resistivity and Induced polarization (IP) were employed at Pagoh, Johor to study and detect the subsurface variation of resistivity and chargeability of iron ore in the area. Result of the 2-D resistivity as well as the Induced Polarization (IP) shows that the area is underlain by a thick alluvium with resistivity value of 10 - 800 ohm-m iron which has chargeability rate of 0.1 - 3 msec. A sedimentary case study was executed at Nusajaya, Johor shows sandstone contains iron mineral (30 - 250 ohm-m) and weathered sandstone (500 -1000 ohm-m). Interpretation of 2-D resistivity data at Puchong, Selangor showed a low resistivity value (< 40 ohm-m), which appears to be a zone that is fully saturated with sandy silt and this could be an influence factor the increasing water level because sandy silt is highly permeable in nature. The borehole, support the results of 2-D resistivity method relating a saturated zone in the survey area. There is a good correlation between the 2-D resistivity investigations and the results of borehole records. The stratigraphy and structure of the three case studies (mineral exploration, geology, engineering and environment) can be mapped effectively using 2-D resistivity with EHR technique.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

M. M. Nordiana, R. Saad, M. N. M. Nawawi, N. Ali, I. N. Azwin and A. H. A. Teh Saufia, "2-D Resistivity Study: The Horizontal Resolution Improvement by Introducing the Enhancing Horizontal Resolution (EHR) Technique," Open Journal of Geology, Vol. 3 No. 2B, 2013, pp. 1-6. doi: 10.4236/ojg.2013.32B001.

References

[1] S. J. Bullock, “Future and Present Trends of Navigation and Positioning Techniques in Exploration Geophysics,” Geophysical Journal, Vol. 92, No. 3, 1988, pp. 521.
[2] A. A. R. Zohdy, G. P. Eaton and D. R. Mabey, “Application of Surface Geophysics to Ground Water Investigations: Techniques of Water-Resources Investigations of the United States Geological Survey,” Book 2, Chapter D1, 1974.
[3] J. S. Sumner, “Principles of Induced Polarization for Geophysical Exploration,” Developments in Economic Geology 5, Elsevier Science Publishing Co, 1976.
[4] J. M. Reynolds, “An Introduction to Applied and Environmental Geophysics,” New York: Wiley, 1997.
[5] Y. Rubin and S. S. Hubbard, “Hydrogeophysics, Water science and Technology Library, Dordrecht, The Netherlands,” Springer, Vol. 50, 2006, pp. 523.
[6] A. H. Said, “Geophysical Imaging of Root-Zone, Trunk, and Moisture Heterogeneity,” Journal of Experimental Botany, Vol. 58, No. 4, 2007, pp. 839-854.
[7] H. R. Burger, “Exploration Geophysics of the Shallow Subsurface,” Prentice Hall P T R., 1992.
[8] M. H. Loke, “Instruction Manual for the 2D Resistivity Forward Modeling Program Res2Dmod,” 1994, pp. 1-11.

  
comments powered by Disqus

Copyright © 2019 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.