Letter | Published:

Absorption and Dispersion of Elastic Energy in Rocks

Nature volume 193, pages 764765 (24 February 1962) | Download Citation

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Abstract

IN common with most solids, rocks usually suffer a constant Q type of absorption (Knopoff and MacDonald, 1958). That is to say, in each cycle of harmonic vibration a certain proportion of the maximum strain energy is converted into heat, and this proportion is independent of the period of vibration. In addition, and this is important in seismology, it appears that the elastic moduli of rocks also are practically independent of frequency.

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References

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    , and , B.S.S.A., 28, 243 (1938).

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    , and , Petroleum, 17, 14 (1954).

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    , and , J. Geophys. Res., 66 (2), 581 (1961).

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    , Stress Wave Propagation in Materials, ed. by Davids, Norman (Interscience, New York, 1960).

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Author information

Affiliations

  1. British Petroleum Research Centre, Sunbury-on-Thames, Middlesex.

    • R. J. DONATO
    •  & P. N. S. O'BRIEN
  2. Department of Applied Geophysics, Imperial College, London, S.W.7.

    • M. J. USHER

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DOI

https://doi.org/10.1038/193764a0

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