1887
Volume 38, Issue 8
  • E-ISSN: 1365-2478

Abstract

A

Seismic refraction surveying is still an important tool for determining the geometries and elastic wave propagation velocities of near‐surface layers. Many analytical and graphical methods have been developed over the years for refraction interpretation, and these can be classified into two basic groups. The first group visualizes critically refracted rays converging on a common surface position, while the second group, which includes the wavefront methods, makes use of the critical rays emerging from a common point on the refractor.

The method described in this paper is an analytical approach to the wavefront methods. The reverse refracted ray received by a geophone is intersected by the forward refracted rays received by subsequent geophones and a common critical refraction point on the refractor is estimated after a series of comparisons. This process is repeated for each geophone to yield the geometry and the velocity of the refractor. Several interpolations are performed to achieve a better accuracy.

Palmer's models are used to test the efficiency of the algorithm. The results are presented together with those of other methods applied to the same models.

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2006-04-27
2019-12-06
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References

  1. Ewing, M., Woollard, G.P. and Vine, A.C.1939. Geophysical investigations in the emerged and submerged Atlantic Coastal Plain, Part 3, Barnegat Bay, New Jersey section. Bulletin of the Geological Society of America50, 257–296.
    [Google Scholar]
  2. Gardner, L.W.1939. An areal plan of mapping subsurface structure by refraction shooting. Geophysics4, 247–259.
    [Google Scholar]
  3. Gardner, L.W.1967. Refraction seismograph profile interpretation. Seismic Refraction Prospecting. A. W.Musgrave (ed.), 338–347. SEG, Tulsa , OK .
    [Google Scholar]
  4. Hagedoorn, J.G.1959. The plus‐minus method of interpreting seismic refraction sections. Geophysical Prospecting7, 158–182.
    [Google Scholar]
  5. Hales, F.W.1958. An accurate graphical method for interpreting seismic refraction lines. Geophysical Prospecting6, 285–294.
    [Google Scholar]
  6. Hawkins, L.V.1961. The reciprocal method of routine shallow seismic refraction investigations. Geophysics26, 806–819.
    [Google Scholar]
  7. Palmer, D.1980. The Generalized Reciprocal Method of Seismic Refraction Interpretation. Society of Exploration Geophysicists, Tulsa , OK .
    [Google Scholar]
  8. Rockwell, D.W.1967. A general wavefront method. Seismic Refraction Prospecting, A. W.Musgrave (ed.), 363–415. SEG, Tulsa , OK .
    [Google Scholar]
  9. Taner, M.T.1983. Refraction Analysis. Technical report. Seismic Research Corporation, Houston , Texas .
    [Google Scholar]
  10. Thornburgh, H.R.1930. Wavefront diagrams in seismic interpretatio. Bulletin of the American Association of Petroleum Geologists14, 185–200.
    [Google Scholar]
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