1887
Volume 31 Number 3
  • E-ISSN: 1365-2478

Abstract

A

Synthetic seismograms can be very useful in aiding understanding of wave propagation through models of real media, verification of geologic models derived from interpretation of field seismic data, and understanding the nature and complexity of wave phenomena. If meaningful results are to be obtained from synthetic seismograms, the method of their computation must, in general, include three‐dimensional geometrical spreading of wavefronts associated with highly concentrated (i.e., point) sources. The method should also adequately represent the seismic response of solid‐layered media by including enough primaries, multiples, and converted phases to accurately approximate the total wavefield. In addition to these features, it is also very helpful, although not always essential, if the method of seismogram computation provides for explicit identification of wave type and ray path for each arrival. Various seismograms, computed via asymptotic ray theory and an automatic ray generation scheme, are presented for a highly simplified North Sea velocity structure. This is done to illustrate the importance of the above features and to demonstrate the inadequacy of the plane‐wave synthesis method of seismogram computation for point sources and the limitations of acoustic models of solid‐layered media.

Loading

Article metrics loading...

/content/journals/10.1111/j.1365-2478.1983.tb01062.x
2006-04-27
2024-04-19
Loading full text...

Full text loading...

References

  1. Alekseev, A. S. and Mikhailenko, B. G.1980, The solution of dynamic problems of elastic wave propagation in inhomogeneous media by a combination of partial separation of variables and finite difference methods, Journal of Geophysics48, 161–172.
    [Google Scholar]
  2. Baranov, V. and Kunetz, G.1960, Film synthétique avec réflexions multiples; théorie et calcul practique, Geophysical Prospecting8, 315–325.
    [Google Scholar]
  3. Cisternas, A., Betancourt, O. and Leiva, A.1973, Body waves in a real Earth, Part I, Bulletin of the Seismological Society of America63, 145–156.
    [Google Scholar]
  4. ČErvený, V. and Hron, F.1980, The ray series method and dynamic ray tracing system for three‐dimensional inhomogeneous media, Bulletin of the Seismological Society of America70, 47–77.
    [Google Scholar]
  5. ČErvený, V., Molotkov, I. A. and Pšenčík, I.1977, Ray Method in Seismology, Charles University Press, Prague .
    [Google Scholar]
  6. Daley, P. F. and Hron, F.1979, SH‐waves in layered transversely isotropic media—an asymptotic expansion approach, Bulletin of the Seismological Society of America69, 689–711.
    [Google Scholar]
  7. Daley, P. F. and Hron, F.1983, High frequency approximation to the non‐geometrical S* arrival, Bulletin of the Seismological Society of America, 1983 February.
    [Google Scholar]
  8. Goupillaud, P. L.1961, An approach to inverse filtering of near‐surface layer effects from seismic records, Geophysics26, 754–760.
    [Google Scholar]
  9. Haskell, N. A.1953, The dispersion of surface waves in multilayered media, Bulletin of the Seismological Society of America43, 17–34.
    [Google Scholar]
  10. Hron, F.1972, Numerical methods of ray generation in multilayered media, in Methods in Computational Physics, vol. 12, Theoretical Seismology (eds B.Alder , S.Fernbach and B. A.Bolt ), Academic Press, New York and London .
    [Google Scholar]
  11. Hron, F.1973, A numerical ray generation and its application to the computation of synthetic seismograms for complex layered media, Geophysical Journal35, 345–349.
    [Google Scholar]
  12. Hron, F., Daley, P. F. and Marks, L. W.1977, Numerical modeling of seismic body waves in oil exploration and crustal seismology, in Proceedings of the American Society of Mechanical Engineers on Computing Methods in Geophysical Mechanics (ed. R. P.Shaw ), AMD vol. 25, pp. 21–42.
    [Google Scholar]
  13. Hron, F. and Kanasewich, E. R.1971, Synthetic siesmograms for deep sounding studies using asymptotic ray theory, Bulletin of the Seismological Society of America61, 1169–1200.
    [Google Scholar]
  14. Hron, F., Kanasewich, E. R. and Alpaslan, T.1974, Partial ray expansion required to suitably approximate the exact wave solution, Geophysical Journal36, 607–625.
    [Google Scholar]
  15. Hron, F. and Mikhailenko, B. G.1981a, Discovery of a new non‐geometrical S* arrival generated at free interface, inProceedings of the European Geophysical Society and the European Seismological Commission Joint Meeting in Budapest, 1981.
  16. Hron, F. and Mikhailenko, B. G.1981b, Numerical modeling of nongeometrical effects by the Alekseev‐Mikhailenko method, Bulletin of the Seismological Society of America71, 1011–1029.
    [Google Scholar]
  17. Kennett, B. L. N.1974, Reflections, rays and reverberations, Bulletin of the Seismological Society of America64, 1685–1696.
    [Google Scholar]
  18. Kennett, B. L. N.1975, The effect of attenuation on seismograms, Bulletin of the Seismological Society of America65, 1643–1651.
    [Google Scholar]
  19. Kennett, B. L. N.1979, Theoretical reflection seismograms for elastic media, Geophysical Prospecting27, 301–321.
    [Google Scholar]
  20. Krebes, E. S. and Hron, F.1980, Synthetic seismograms for SH‐waves in a layered anelastic medium by asymptotic ray theory, Bulletin of the Seismological Society of America70, 2005–2020.
    [Google Scholar]
  21. May, B. T. and Hron, F.1978, Synthetic seismic sections of typical petroleum traps, Geophysics43, 1119–1147.
    [Google Scholar]
  22. Thomson, W. T.1950, Transmission of elastic waves through a stratified solid medium, Journal of Applied Physics21, 89–93.
    [Google Scholar]
  23. Treitel, S., Gutowski, P. R., Hubral, P. and Wagner, D. E.1981, Plane wave decomposition of seismograms, inProceedings of the 51st Annual Meeting of the Society of Exploration Geophysicists in Los Angeles, 1981.
  24. Treitel, S. and Robinson, E. A.1966, Seismic wave propagation in layered media in terms of communication theory, Geophysics31, 17–32.
    [Google Scholar]
  25. Trorey, A. W.1962, Theoretical seismograms with frequency and depth dependent absorption, Geophysics27, 766–785.
    [Google Scholar]
  26. White, R. S. and Stephen, R. A.1980, Compressional to shear wave conversion in oceanic crust, Geophysical Journal63, 547–565.
    [Google Scholar]
  27. Wuenschel, P. E.1960, Seismogram synthesis including multiples and transmission coefficients, Geophysics25, 106–129.
    [Google Scholar]
  28. Yasar, T.1980, Shear and converted wave noise studies in Lake Pontchartrain, Amoco Production Co. Geophysical Technical Report 80–2.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journals/10.1111/j.1365-2478.1983.tb01062.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