1887
Volume 21, Issue 3-4
  • ISSN: 0812-3985
  • E-ISSN: 1834-7533

Abstract

Ground probing radar (GPR) is a relatively new geophysical technique thai has evolved from radio-frequency soundings ot ice to determine depth to bed rock. The technique attracted Interest as a viable geophysical tool in the early 1970s when a number ol successful experiments were reported by researchers including Cook (1974, 75) and Morey (1974). The Geomechanics Division of CSIRO has carrying out field investigations with GPR since suitable equipment was obtained in 1986. The Division’s experience with GPR in a wide variety of sites and geological conditions has clearly shown that the radar method is capable ot generating valuable information concerning shallow subsurface structure although the technique has been found to be highly site-dependent with depths of penetration rarely exceeding 10 m. Consequently the role of GPR in exploration is limited. It is best suited to geotechnical or engineering geophysics applications such as the detection underground services and cavities, foundation studies and the detection of the water table at shallow depths in sandy soils. Despite these limitations, GPR is capable of producing high quality data. These data can be processed with the use of seismic-style filters and migration schemes to yield accurate images of subsurface structure.

© 1990 ASEG
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1990-09-01
2026-01-20

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References

  1. Bleany. B. I. and Rleany. B. (1965). ‘Electricity ana Magnetism’ 2nd Ed., Oxlyrd Universiiy Press.
  2. Buchen. P (1986), ‘Advanced Guopliystcal Modelling’: Notes prepared for leeiure series al Macquarie University, Sydney, Auslralia.
  3. CooK. J. C. (1974), ‘Sttus of ground-pigping radar and same recent experiments.’ Subsurface exploratin for Underground Excavation and Hfiavy Construction – Proceedings of Speciality Cont. Now Hampshire. Published hy the ASME. New york, pp. 213-232.
  4. Cook, J C. (1975). ‘Radar Iransparencies of mine and tunnel rocks.’ Geophysics 40. pp 865-885
  5. Daniels, D. J. Gunton. D. j. >and Scott. H. F. (1988), ‘Introduction to subsurface radar’ IEE Proceedings-F. Communications, Radar and Signal Processing, 135. pp. 270-320
  6. Gardner, G. H F. (1985), ‘Migration of Seismic Data’ Society of Exploration Geophysicists. Tulsa, Qaklahoma.
  7. Hunt. L. D. (1988), ‘ADSDAT-A data acquisition and display program for radar’. CSIRO Division of Geomechanics, External Report No. 6.
  8. Moray, R. M. (19/4). ‘Continuous subsurface profiling by impulse radar.’ Subsurface Exploration for Underground excavation and Heavy Construction Proceedings of Speciality Conf., New Hampshire. Published by the ASME, New york, pp. 175-189
  9. Rohinson. E A. and Treitel. S. (1980). ‘Geophysical Signal Analysis’. Prentice Hall, Englewood Cliffs. NJ.
  10. Stolt, R. H (1978). ‘Migration by Fourier transform.’ Geophysics, 43. pp. 23-48.
  11. Young, J. D., and Caldecotl. R., (1972), ‘Underground pipe detection.’ U.S, Patent No. 3 967 202.
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  • Article Type: Research Article
Keyword(s): Ground probing radat/cavitis/underground services/migration

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