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Geofisica pura e applicata

, Volume 49, Issue 1, pp 15–35 | Cite as

On low period sub-oceanic Rayleigh waves and their attenuation

  • Sujit Kumar Bose
Article
  • 24 Downloads

Summary

In most cases it is found that Rayleigh waves in the period range I to 12 secs fail to cross appreciable oceanic paths. Several explanations have been given, but none seem very much satisfactory. Here an attempt has been made to show that the attenuation of the Rayleigh waves in the low period range is due to their passage through a non-uniform earth's crust, the non-uniformity arising due to the ocean. The ocean has been taken to be an indentation in a flat earth's crust, with horizontal bottom and slant sides. Approximate numerical calculations hint that the vertical component of displacement is attenuated more than the horizontal component.

Keywords

Attenuation Numerical Calculation Vertical Component Horizontal Component Rayleigh Wave 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. (1).
    L. M. Brekhovskikh: Soviet Physics — Doklady, Vol. 4, pp. 150–153 (1959).Google Scholar
  2. (2).
    A. Erdèly:Tables of Integral Transforms (Mc-Graw Hill), Vol. 1, p. 159 (1954).Google Scholar
  3. (3).
    A. C. Eringen &J. C. Samuels: J. App. Mech., Vol. 26, pp. 491–498 (1959).Google Scholar
  4. (4).
    M. L. Ghosh: Gerl. Beitr. Geoph. (in press) (1961).Google Scholar
  5. (5).
    H. Jeffreys: M.N.R.A.S. (Geoph. Supp.), Vol. 1, p. 283 (1925).Google Scholar
  6. (6).
    H. Jeffreys: M.N.R.A.S. (Geoph. Supp.), Vol. 3, p. 259 (1935).Google Scholar
  7. (7).
    H. Lamb: Phil. Trans. Roy. Soc. A., Vol. 203, pp. 1–42 (1904).Google Scholar
  8. (8).
    A. E. H. Love:Some problems of Geodynamics (Camb. Univ. Press), Chap. 7 (1911).Google Scholar
  9. (9).
    M. Hewlands: M.N.R.A.S. (Geoph. Supp.), Vol. 6, pp. 109–124 (1950).Google Scholar
  10. (10).
    C. J. Tranter:Integral Transforms in Mathematical Physics (Methuen), pp. 63–65 (1956).Google Scholar

Copyright information

© Istituto Geofisico Italiano 1961

Authors and Affiliations

  • Sujit Kumar Bose
    • 1
  1. 1.Presidency CollegeCalcutta(India)

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