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An earthquake with exceptionally strong higher-mode surface waves

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Summary

An earthquake in the Northern Sinkiang Province, China, on November 13th, 1965, produced exceptionally strong higher-mode surface waves recorded at the Swedish seismograph stations, especially by the Galitzin seismographs at Kiruna. Group-velocity dispersion curves are deduced for the second Rayleigh and the second and third Love wave modes. The energy content of the second Rayleigh and Love modes is computed, and it is found that the former amounts to about 70 times as much as in average. Various reasons for this exceptional behaviour are discussed, such as depth extent of focus, focal mechanism and properties of propagation path.

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References

  1. [1]

    D. Anderson andM. N. Toksöz,Surface waves on a spherical earth. 1. Upper mantle structure from Love waves, J. Geophys. Res.68, 11 (1963), 3483.

  2. [2]

    M. Båth,The elastic waves Lg and Rg along Euroasiatic paths, Arkiv f. Geofys.2, 13 (1954), 295.

  3. [3]

    M. Båth,The relation between magnitude and energy of earthquakes, Trans. Amer. Geophys. Un.36, 5 (1955), 861.

  4. [4]

    M. Båth,The energies of seismic body waves and surface waves, Contr. in Geophys. (Gutenberg Vol.)1 (1958), 1.

  5. [5]

    M. Båth,Earthquake energy and magnitude, Phys. and Chem. of the Earth7 (1966), 115.

  6. [6]

    M. Båth,Propagation of Sn and Pn to teleseismic distances, Pure and Appl. Geophys.64,2 (1966), 159.

  7. [7]

    S. Crampin,Higher modes of seismic surface waves: Preliminary observations, Geophys. J.9, 1 (1964), 37.

  8. [8]

    S. Crampin,Higher modes of seismic surface waves: Second Rayleigh mode energy, J. Geophys. Res.70, 20 (1965), 5135.

  9. [9]

    S. Crampin,Higher modes of seismic surface waves: Propagation in Eurasia, Bull. Seism. Soc. Amer.56, 6 (1966), 1227.

  10. [10]

    S. Crampin andM. Båth,Higher modes of seismic surface waves: Mode separation, Geophys. J.10, 1 (1965), 81.

  11. [11]

    R. L. Kovach andD. L. Anderson,Higher mode surface waves and their bearing on the structure of the earth's mantle, Bull. Seism. Soc. Amer.54, 1 (1964), 161.

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Båth, M. An earthquake with exceptionally strong higher-mode surface waves. PAGEOPH 66, 16–24 (1967). https://doi.org/10.1007/BF00875307

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Keywords

  • Surface Wave
  • Dispersion Curve
  • Energy Content
  • Focal Mechanism
  • Propagation Path