1887
  1. Home
  2. A-Z Publications
  3. Geophysical Prospecting
  4. Volume 33, Issue 7
  5. Article
Volume 33 Number 7
  • E-ISSN: 1365-2478

Abstract

A

A standard seismic reflection profile was shot along a disused railway track at Onley, near Rugby, U. K. Four different seismic sources including explosives, the propane/oxygen gas‐gun, the Bolt airgun, and the borehole sparker were used and compared with each other in terms of output energy, penetration and resolution. The results indicated that the resolution of the borehole airgun and the gas‐gun was slightly higher than that possible with gelignite. Both these sources had an output energy which was equivalent to 30 g of gelignite.

The borehole sparker was only useful for obtaining seismic information on the nearsurface weathered layer, since its output power (1 kJ) was very limited. However, McCann and McCann (1982) used a high‐power sparker source (14 kJ) on the nearby Grand Union Canal for a wide angle seismic reflection survey and achieved a maximum penetration of 250 m, which is comparable with the results obtained on land with the seismic sources mentioned above.

The seismic reflection profile, which was interpreted in the light of borehole information in the area and the results of McCann and McCann (1982), successfully identified the surface of the Palaeozoic rocks. The problem of detecting the presence of thin, high‐velocity layers in a seismic refraction survey without the availability of other information to calibrate the seismic section is also highlighted.

Loading

Article metrics loading...

/content/journals/10.1111/j.1365-2478.1985.tb00790.x
2006-04-27
2024-04-26

  • From This Site

    /content/journals/10.1111/j.1365-2478.1985.tb00790.x
    dcterms_title,dcterms_subject,pub_keyword
    -contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution
    10
    5
Loading full text...

Full text loading...

References

  1. Beckman, W. C., Roberts, A. C. and Luskin, B.1959, Sub‐bottom depth recorder, Geophysics24, 749–760.
    [Google Scholar]
  2. Bullard, E. C., Gaskell, T. F., Harland, W. B. and Kerr Grant, C.1940, Seismic investigations in southeast England, Proceedings of Royal SocietyA 239, 4.
    [Google Scholar]
  3. Donato, R. J.1965, Measurements on the arrival refracted from a thin high speed layer, Geophysical Prospecting13, 387–404.
    [Google Scholar]
  4. Houtz, R., Ewing, J. and Buhl, P.1970, Seismic data from sonabuoy stations in the Northern and Equatorial Pacific, Journal of Geophysical Research75, 5093–5111.
    [Google Scholar]
  5. Lavergne, M.1961, Etudes sur modèle ultrasonique du problème des conches minées en sismique refraction, Geophysical Prospecting9, 60–73.
    [Google Scholar]
  6. McCann, C., McCann, D. M. and Hallam, J. R.1973, Seismic surveying from inland waterways, Nature Physical Science244, 26–28.
    [Google Scholar]
  7. McCann, C. and McCann, D. M.1982, Wide angle seismic reflection profiling on inland waterways report of Institute of Geological Sciences No. 82/3.
    [Google Scholar]
  8. McCann, D. M., Grainger, P. and McCann, C.1975, Inter‐borehole acoustic measurements and their use in engineering geology, Geophysical Prospecting23, 50–69.
    [Google Scholar]
  9. Poley, J. P. and Nooteboom, J. J.1966, Seismic refraction and screening by thin high velocity layers, Geophysical Prospecting14, 184–203.
    [Google Scholar]
  10. Rosenbaum, J. H.1965, Refraction arrivals through the high velocity layers, Geophysics30, 204–212.
    [Google Scholar]
  11. Sherwood, J. W. C.1967, Refraction along an embedded high‐speed layer, in Seismic Refraction Prospecting, Society of Exploration Geophysics, Tulsa , 138–151.
    [Google Scholar]
  12. Trostle, M. E.1967, Some aspects of refraction shooting through screening layers, in Seismic Refraction Prospecting, Society of Exploration Geophysics, Tulsa , 469–481.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journals/10.1111/j.1365-2478.1985.tb00790.x
Loading
  • Article Type: Research Article

Most Cited This Month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error