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riann_thomas SEFI Member
Joined: 15 Nov 2012 Posts: 2
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Posted: Thu Nov 15, 2012 5:56 pm Post subject: electrical resistivity method |
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Dear all,
I have planed to do "electrical resistivity method" to determine the water table and soil profile for my btech project. I would like to get some quality literature corresponding to the same to understand the subject thoroughly. Can any one suggest some literature??? |
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B.V.Harsoda General Sponsor
Joined: 19 Jan 2009 Posts: 2329 Location: RAJKOT,GUJARAT, INDIA
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B.V.Harsoda General Sponsor
Joined: 19 Jan 2009 Posts: 2329 Location: RAJKOT,GUJARAT, INDIA
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Posted: Fri Nov 16, 2012 5:00 pm Post subject: |
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Electrical imaging survays for environmental and engineering studies:-
Table of Contents
1. Introduction to resistivity surveys 1
1.1 Introduction 1
1.2 Traditional resistivity surveys 1
1.3 The relationship between geology and resistivity 3
2. 2-D electrical imaging surveys 5
2.1 Introduction 5
2.2 Field survey method - instrumentation and field procedure 5
2.3 Pseudosection data plotting method 8
2.4 Forward modeling program exercise 8
2.5 Advantages and disadvantages of the different arrays 10
2.5.1 Wenner array 11
2.5.2 Dipole-dipole array 14
2.5.3 Wenner-Schlumberger array 15
2.5.4 Pole-pole array 15
2.5.5 Pole-dipole array 17
2.5.6 High-resolution surveys with overlapping data levels 18
2.5.7 Summary 19
2.6 Computer interpretation 19
2.6.1 Data input and format 19
2.6.2 Guidelines for data inversion 20
2.7 Field examples 24
2.7.1 Agricultural pollution - Aarhus, Denmark 24
2.7.2 Odarslov dyke - Sweden 25
2.7.3 Underground cave - Texas, U.S.A. 25
2.7.4 Landslide - Cangkat Jering, Malaysia 27
2.7.5 Old tar works - U.K. 27
2.7.6 Holes in clay layer - U.S.A. 27
2.7.7 Magusi River ore body - Canada 29
2.7.8 Marine underwater survey - U.S.A. 31
2.7.9 Time-lapse water infiltration survey - U.K. 31
2.7.10 Cross-borehole survey - U.K. 34
2.7.11 Wenner Gamma array survey - Nigeria. 35
2.7.12 Mobile underwater survey - Belgium. 36
3. 3-D Electrical Imaging Surveys 38
3.1 Introduction to 3-D surveys 38
3.2 Array types for 3-D surveys 38
3.2.1 Pole-pole array 38
3.2.2 Pole-dipole array 40
3.2.3 Dipole-dipole array 40
3.2.4 Summary 40
3.3 3-D roll-along techniques 41
3.4 3-D forward modeling program 41
3.5 Data inversion 43
3.6 Examples of 3-D field surveys 46
3.6.1 Birmingham field test survey - U.K. 46
3.6.2 Septic tank survey - Texas 48
3.6.3 Sludge deposit - Sweden 48
iv
Copyright (1999) M.H.Loke
Acknowledgments 51
References 52
Appendix A Data format for dipole-dipole, pole-dipole and Wenner-Schlumberger
arrays. 54
Appendix B Topographic modelling 56
Appendix C Inversion method 58
Appendix D Statistical data filtering 60
Source:-
http://www.heritagegeophysics.com/images/lokenote.pdf |
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B.V.Harsoda General Sponsor
Joined: 19 Jan 2009 Posts: 2329 Location: RAJKOT,GUJARAT, INDIA
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Posted: Fri Nov 16, 2012 5:05 pm Post subject: |
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SHORT NOTE ON THE PRINCIPLES OF GEOPHYSICAL METHODS FOR GROUNDWATER INVESTIGATIONS
Link:-
http://www.heritagegeophysics.com/papers/Groundwater_n_Geophysics.pdf
ASTM D1125 - 95(2009) Standard Test Methods for Electrical Conductivity and Resistivity of Water
Link:-
http://www.astm.org/Standards/D1125.htm
Last edited by B.V.Harsoda on Fri Nov 16, 2012 5:10 pm; edited 1 time in total |
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B.V.Harsoda General Sponsor
Joined: 19 Jan 2009 Posts: 2329 Location: RAJKOT,GUJARAT, INDIA
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Posted: Fri Nov 16, 2012 5:09 pm Post subject: |
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THE COMPLEX RESISTIVITY METHOD:-
Table of Contents
Page
1. INTRODUCTION ..........................................................................5
1.1. The Coupling Problem............................................................................. 6
1.2. Zonge Complex Resistivity Systems ........................................................ 8
2. DESCRIPTION OF COMPLEX RESISTIVITY DATA ..............10
2.1. Apparent Resistivity (ra,ohmmeters) ..................................................... 10
2.2. Raw Phase (fr,milliradians) ................................................................... 11
2.3. Percent Frequency Effect (PFE, %)........................................................ 11
2.4. Three-frequency Corrected Phase (f3pt, milliradians) ............................ 11
2.5. Decoupled Phase and Spectral Plots (Spectral IP) .................................. 12
2.6. Coupling Coefficient Data ..................................................................... 15
2.7. Residual Electromagnetic Data (REM) .................................................. 15
3. ADVANTAGES OF COMPLEX RESISTIVITY .........................19
3.1. Mineral Detection: IP versus CR............................................................ 19
3.2. Coupling Removal................................................................................. 22
3.3. Cultural Contamination.......................................................................... 22
3.4. Hydrocarbon Detection.......................................................................... 27
4. DATA ACQUISITION.................................................................28
4.1. PDP-8 CR System.................................................................................. 30
4.2. GDP CR System Harmonics .................................................................. 30
4.3. CR Data Processing ............................................................................... 30
5. OTHER CR SERVICES...............................................................31
6. SURVEY PLANNING .................................................................31
7. REFERENCES .............................................................................32
SOURCE:-
http://www.zonge.com/PDF_Papers/CRMethod.pdf |
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riann_thomas SEFI Member
Joined: 15 Nov 2012 Posts: 2
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Posted: Tue Nov 20, 2012 5:08 pm Post subject: |
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Thank you B.V.Harsoda Sir for your valuable suggestion.
Sir, do you have access to J M Katte's works on electrical Resistivity method????
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