The Triggering of Aftershocks: Part I: A Search for Tidal Periodicities in the 1989 Loma Prieta (California) Aftershock Sequence

  • L. Mansinha
  • Kamal
Conference paper
Part of the NATO ASI Series book series (ASEN, volume 4)


The spectrum of the 1989 Loma Prieta (California) aftershock sequence was examined for the existence of 12 and 24 hour tidal periods. Approximately 6000 aftershocks in the range ML≥1 were included in the study. No significant peaks were seen at the tidal periods. No evidence for tidal triggering of the aftershocks has been found.


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  1. Allen, M.W., 1936. The lunar triggering effect on earthquakes in Southern California. Bull. Seismol. Soc. Am., 26, 147–157.Google Scholar
  2. Childers, D. and Durling, A., 1975. Digital filtering and signal processing. West Publishing co., 539 p.Google Scholar
  3. Davison, C., 1934. The origin of earthquakes as illustrated by their periodicity. Geological Magazine, 71, 493.CrossRefGoogle Scholar
  4. Davison, C., 1935. Periodic variations in the mean focal depth of Japanese earthquakes. Nature, 135, 76–77.CrossRefGoogle Scholar
  5. Dietz, L.D., and Ellsworth, W.L., 1990. The October 17, 1989, Loma Prieta, California, Earthquake and its aftershocks: Geometry of the sequence from high resolution locations. Geophys. Res. Lett., 17, 1417–1420.CrossRefGoogle Scholar
  6. Eaton, J.P., O’Neill, M.E. and Murdock, J.N., 1970 Aftershocks of 1966 ParkfieldChalome, California, earthquake - a detailed study.Bull. Seismol. Soc. Am., 60, 1151.Google Scholar
  7. Filson, J, Simkin, T. And Leu, L., 1973 Seismicity of a caldera collapse: Galapagos Islands 1968. Jour. Geophys. Res.,78, 8591–8622.CrossRefGoogle Scholar
  8. Fadeli, A., Rydelek, P.A., Emter, D. and Ziirn, W., 1991. On volcanic shocks at Merapi and tidal triggering. in Volcanic Ttremor and Magma Flow edited by R. Schick and R. Mugiono. Forschungszentrum Jülich.Google Scholar
  9. Heaton, T.H., 1975. Tidal triggering of earthquakes.Geophys. J. R. astr. Soc., 43, 307–326.CrossRefGoogle Scholar
  10. Kamal and Mansinha, L., 1995 The Triggering of Aftershocks: Part II. Normal Mode Periodicities in the 1989 Loma Prieta Earthquake Aftershock Sequence.This volume. Google Scholar
  11. Kanamori, H. And Satake, K., 1990. Broadband study of the 1989 Loma Prieta earthquake. Geophys. Res. Lett., 17, 1179–1182.CrossRefGoogle Scholar
  12. Kilston, S. and Knopoff, L., 1983. Lunar-Solar periodicities of large earthquakes in southern California. Nature, 304, 21–25.CrossRefGoogle Scholar
  13. Klein, F.W., 1976. Earthquake swarms and the semidiurnal solid earth tide. Geophys. J. R. astr. Soc., 45, 245–295.CrossRefGoogle Scholar
  14. Knopoff, L, 1964. Earth tides as a triggering mechanism for earthquakes. Bull. Seismol. Soc. Am., 54, 1865–1870.Google Scholar
  15. Knopoff, L, 1969. The triggering of large earthquakes by earth tides. EOS, 50, 399.CrossRefGoogle Scholar
  16. Knott, C.G., 1897. On lunar periodicities in earthquake frequency.Proc. Roy. Soc., 60, 457–466.CrossRefGoogle Scholar
  17. McNutt, S.R., and Beavan, R.J., 1981, Volcanic earthquakes at Pavlof volcano correlated with the solid earth tide. Nature, 294, 615–618.CrossRefGoogle Scholar
  18. McNally, K.C., Lay, T., Protti-Quesada, M., Valensise, G., Orange, D. and Anderson, R.S., 1989. Santa Cruz mountains (Loma Prieta) earthquake.EOS, 70, 1463–1467.CrossRefGoogle Scholar
  19. Oldham, R.D., 1902. On the tidal periodicity in the earthquakes of Assam. Jour. Asiatic Soc. Bengal, 71, 139–153.Google Scholar
  20. Oldham, R.D., 1903. The diurnal variation in frequency of the aftershocks of the great earthquake of June 12, 1897. Mem. Geol. Surv. India, 35, 1–34.Google Scholar
  21. Omori, F., 1904. Note on the lunar-daily distribution of earthquakes.Pub. Eqke. Inv. Comm. Tokyo, 18, 27–40.Google Scholar
  22. Oppenheimer, D.H., 1990, Aftershock slip behaviour of the 1989 Loma Prieta, California earthquake. Geophys. Res..Lett., 17, 1199–1202.CrossRefGoogle Scholar
  23. Phillips, E.S., 1917, Great earthquakes and certain lunar longitudes.English Mechanic, 105, 25.Google Scholar
  24. Ryall, A., Van Wormer, J.D. and Jones, A.E., 1968, Triggering of micro-earthquakes by earth tides, and other features of the Truckee, California earthquake sequence of September, 1966. Bull. Seismol. Soc. Am., 58, 215–248.Google Scholar
  25. Rydelek, P.A., Davis, P.M. and Koyanagi, R.Y., 1988, Tidal triggering of earthquake swarms at Kilauea volcano, Hawaii. Jour. Geophys. Res., 93, 4401–4411.CrossRefGoogle Scholar
  26. Rydelek, P.A., Sacks, I.S. and Scarpa, R., 1992, On tidal triggering of earthquakes at Campi Flegrei, Italy. Geophys. J. Int., 109, 125–137.CrossRefGoogle Scholar
  27. Schuster, A., 1897. On lunar and solsr periodicities of earthquakes.Proc. Roy. Soc., 61, 455–465.CrossRefGoogle Scholar
  28. Shaw, J.J., 1917, Earthquakes and lunar longitudes. English Mechanic, 104, 473.Google Scholar
  29. Shlien, S., 1972. Earthquake-Tide correlation. Geophys. J. R. astr. Soc., 28, 27–34.CrossRefGoogle Scholar
  30. Souriau, M., Souriau, A. and Gagnepain, J., 1982, Modeling and detecting interactions between earth tides and earthquakes with application to an aftershock sequence in the Pyrenees. Bull. Seismol. Soc. Am., 72, 165–180.Google Scholar

Copyright information

© Springer-VerlagBerlin Heidelberg 1995

Authors and Affiliations

  • L. Mansinha
    • 1
  • Kamal
    • 1
  1. 1.Department of Earth SciencesUniversity of Western OntarioLondonCanada

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