The Development of a New Rhombic Array in Electrical Resistivity Prospecting

Mohammad Ibrahim Abdul-Razzak

Abstract


A new array of four electrodes, placed at the corners of a Rhomb or Diamond shape consisting of two equilateral triangles, having equal sides with a short diagonal of the same length as the side and a long diagonal with length equal to (√3) times  the side length has been developed and described.This array exhibits different layout shapes according to the position of the short diagonal (a) with respect to the traverse line, which is normal to the strike of the body.As no previous study of this new system had been carried out, tank analogue experiments over high resistivity, concealed model was considered, and a field test was carried out to prove its usefulness.The objective of this model experiment is to study, examine and assess the behavior, response and sensitivity of different orientation Rhombic systems over such model, in order to establish the best layout, which can be used for further experiment studies and fieldwork investigation.However, and by comparison the new system with the most conventional one (Wenner array), the results obtained in the field tests by the Rhombic array have its higher performance and superiority over the Wenner with regards to anomaly shape, magnitude and position when a vertical body was conducted, (i. e the signal is quite improved).


Keywords


Geophysics; Electric; Development; New Array.

Full Text:

PDF

References


Abdul-Razzak, M. I 1990 The Development and Application of the Rhombic Array in Electrical Resistivity Prospecting. Ph.D Thesis, Mining and Mineral Engineering Department, Leeds University, Leeds, England, U.K

Abdul-Razzak, M. I 2004 A Study of Electrical Profiling with Normal Equi-Spaced Three Electrode Array (Experiment Model Study). Paper Accepted at the 8th Jordanian Geological Conference.

Abdul-Razzak, M. I 2004 The Combination Equi-Spaced Three Electrode in Electrical Prospecting (Tank Model Study). Paper Accepted at the 8th Jordanian Geological Conference.

Al-Chalabi, M 1969 Theoretical Resistivity Anomalies Across a Single Vertical Discontinuity. Geoph. Prosp. Vol.17 pp:63-82.

Apparoa, A 1979 Model Tank Experiments on Resolution of Resistivity Anomalies Obtained Over Buried Conducting Dykes-Inline and Broadside Profiling. Geoph. Prosp. Vol.27 pp:835-847.

Apparoa, A and Roy, A 1971 Resistivity Model Experiments 2. Geoexploration Vol.9 pp:195-205

Apparoa, A, Roy, A and Mallick, K 1969 Resistivity Model Experiments. Geoexploration Vol.17 pp:45-54.

Alpine, L. M, Berdjchevskii, M. N, Vedrintsev, G. A and Zagormister, A. M 1966 Dipole Methods for Measuring Earth Conductivity. Special Reasearch Report.

Bibby, J. M and Risk, G. F 1973 Interpretation of Dipole-Dipole Resistivity Surveys Using a Hemi-spheriodal Model Geoph. Vl.38 pp:719-737.

Brass, G. F, Flathe, H and Schulz, R 1981 Resistivity Profiling with Different Electrode Arrays Over a Graphite Deposit Geoph. Prosp. Vol.29 pp:589-600.

Doicin, D 1976 Quadripole-Quadripole Arrays for Direct Current Resistivity Measurements – Model Studies. Geoph. Vol.41 pp:79-95.

Gupta, R. N and Bhattacharya, P. K 1963 Unipole Method of Electrical Profiling. Geoph. Vol.28 pp:608-616.

Habberjam, G. M and Watkins, G. E 1967b The Use of a Square Configuration in resistivity Prospecting. Geoph. Prosp. Vol.15 pp:445-468.

Habberjam, G. M and Jackson, A. A 1974 Approximate Rules for the Composition of Apparent Resistivity Section Geoph. Prosp. Vol.22 pp:393-420.

Jain, S. C 1974 Theoretical Broadside Resistivity Profiles Over an Outcropping Dyke. Geoph. Prosp. Vol.22 pp:445-457.

Karous, M.R and Pernu, T. K 1982 Asymmetrical Resistivity Sounding-Profiling with Three Electrode Gradient Arrays AMN-MNB.Dept. of Geophysics, University of Oulu, Report No. 3.

Keller, G. V and Frischknecht, F. C 1966 Electrical Methods in Geophysical Prospecting, Pergamon Press.

Kumar, R 1973a Variable Azimuthal Resistivity Sounding and Profiling with Two Electrode System Near a SingleVertical Discontinuity.Geoph. Prosp. Vol.2 pp171-175.

Mohammed, S. A. A and Habberjam, G. M 1977 An Example of the Rules of Composition in Resistivity Interpretation.Geoph. Prosp. Vol.25 pp: 52-60.

Saydam, A. S and Duckworth, K 1978 Comparison of Some Electrode Arrays for Their IP. And Apparent Resistivity Responses Over a Sheet like Target. Geoexploration Vol.16 pp267-291.

Schlumberger, C 1920 Elude Surla Prospection Electrique Au Sous-Sol. Paris, Gauthier-Villars 94p.

Van Nostrand, R. G and Cook, K. I 1966 Interpretation of Resistivity Data. Geophysical Survey Professional Paper, U.S. Geological Survey, 499p.

Verma, R. K and Bandopadhyay, T. K 1983 Use of Resistivity Method in Geological Mapping – Case Histories from Rangiganj Coalfield, India.

Vozoff, K 1960 Numerical Resistivity Interpretation: general Homogeneity. Geoph. Vol.25 pp:1184-1194.

Wenner, F 1915 A Method of Measuring Earth Resistivity Bulletin of the Bureau of Standards, Vol.12 pp:469-478.

Zohdy, A. A. R 1970 Geometric Factors of Bipole- Dipole Arrays. Geological Survey Bulletin, 1313-B


Refbacks

  • There are currently no refbacks.


 
 
  
 

 

  


About ASRJETS | Privacy PolicyTerms & Conditions | Contact Us | DisclaimerFAQs 

ASRJETS is published by (GSSRR).