Introduction to the resistivity surveying method. The resistivity of ...

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50 Figure 37. The 3-D model obtained from the inversion of the Lernacken Sludge deposit survey data set displayed as horizontal slices through the earth. Copyright (1999-2001) M.H.Loke
51 Figure 38. The 3-D model obtained from the inversion of the Lernacken Sludge deposit survey data set displayed with the Slicer/Dicer program. A vertical exaggeration factor of 2 is used in the display to highlight the sludge ponds. Note that the colour contour intervals are arranged in a logarithmic manner with respect to the resistivity. Acknowledgments Dr. Torleif Dahlin of Lund University in Sweden kindly provided the Odarslov Dyke and Lernacken data sets. The Grundfor data set was provided by Dr. Niels B. Christensen of the University of Aarhus in Denmark and Dr. Torleif Dahlin. The Rathcroghan data set was kindly provided by Dr. Kevin Barton and Dr. Colin Brown from data collected by the Applied Geophysics Unit of University College Galway, Ireland. Mr. Mats Lagmansson of Advanced Geosciences Inc. kindly provided the Sting Cave, the Fisher Island marine survey and the 3-D septic tank survey data sets. Many thanks to Richard Cromwell and Rory Retzlaff of Golder Assoc. (Seattle) for the survey example to map holes in a clay layer. Dr. Andrew Binley of Lancaster University kindly provided the interesting cross-borehole data set. The Bauchi data set was provided by Dr. Ian Acworth of the University of New South Wales, Australia. The Redas river survey data set was kindly provided by Jef Bucknix of Sage Engineering, Belgium. Finally, a special acknowledgment to Ron Barker of the School of Earth Sciences, University of Birmingham for the Tar Works and the 3-D Birmingham survey data sets. Slicer/Dicer is a registered trademark of Visualogic Inc. Copyright (1999-2001) M.H.Loke
Page 1 and 2:
Electrical imaging surveys for envi
Page 3 and 4:
iii Table of Contents 1. Introducti
Page 5 and 6: v List of Figures Figure Page Numbe
Page 7 and 8: 1 1 Introduction to resistivity sur
Page 9 and 10: 3 carry out the more data intensive
Page 11 and 12: 5 2 2-D electrical imaging surveys
Page 13 and 14: 7 Note that as the electrode spacin
Page 15 and 16: 9 Figure 7. The apparent resistivit
Page 17 and 18: 11 function basically tells us the
Page 19 and 20: 13 Table 2. The median depth of inv
Page 21 and 22: 15 investigation) used in drawing t
Page 23 and 24: 17 electrode spacing along the surv
Page 25 and 26: 19 2.5.7 Summary If your survey is
Page 27 and 28: 21 significantly better results. Ho
Page 29 and 30: 23 Figure 15. Subdivision of the su
Page 31 and 32: 25 2.7.2 Odarslov Dyke - Sweden A d
Page 33 and 34: 27 2.7.4 Landslide - Cangkat Jering
Page 35 and 36: 29 same depth with more data points
Page 37 and 38: 31 2.7.8 Marine bottom resistivity
Page 39 and 40: 33 collected at 5 hours after the p
Page 41 and 42: 35 2.7.11 Wenner Gamma array survey
Page 43 and 44: 37 sediment samples. The lower resi
Page 45 and 46: 39 Figure 29. The arrangement of th
Page 47 and 48: 41 columns of electrodes. 3.3 3-D r
Page 49 and 50: 43 The free 3-D resistivity forward
Page 51 and 52: 45 Figure 33. The models used in 3-
Page 53 and 54: 47 Figure 35. Horizontal and vertic
Page 55: 49 Figure 36. The model obtained fr
Page 59 and 60: 53 Break 3 (No. 7), 16-20. Griffith
Page 61 and 62: 55 electrode is less than the x-loc
Page 63 and 64: 57 Figure 40. Inversion models for
Page 65 and 66: 59 of regions that are internally a
Page 67: 61 calculated apparent resistivity
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