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Premonitory changes in seismicity prior to the Great Sumatra-Andaman earthquake of December 26, 2004

Abstract

We studied changes in seismicity in a source region of the Sumatra earthquake prior to the earthquake on 26 December 2004. Rate increases were detected for earthquakes of M ≥ 5.0 using the ETAS method, with the assumption that independent events follow the Poisson process with at most only one rate change. Based on the declustered catalogue, we obtained consistent changes with simple Poisson models. Temporal changes in mean magnitude were obtained using the CUSUM method. b-values for three periods were calculated, taking into consideration the results of the CUSUM analysis, which showed a 10-year period of an anomaly high b-value followed by a 13-year period of a low b-value. The statistical significance of this change was confirmed by a bootstrap method. Both changes imply activation of seismicity in the source region.

References

  • Akaike, H., On entropy maximization principle, in Applications of Statistics, edited by Krishnaiah, P. R., pp. 27–41, North Holland, Amsterdam, 1977.

    Google Scholar 

  • Aki, K., Maximum likelihood estimate of b in the formula logN = a-bM and its confidence limits, Bull. Earthq. Res. Inst. Univ. Tokyo, 43, 237–239, 1965.

    Google Scholar 

  • Araki, E., M. Shinohara, K. Obana, T. Yamada, Y. Kaneda, T. Kanazawa, and K. Suehiro, Aftershock distribution of the December 2004 Sumatra-Andaman earthquake from ocean bottom seismographic observation, Earth Planets Space, 58, 113–119, 2006.

    Article  Google Scholar 

  • Bakun, W. H., Seismic moments, local magnitudes, and coda-duration magnitudes for earthquakes in central California, Bull. Seismol. Soc. Am., 74, 439–485, 1984.

    Google Scholar 

  • Bilham, R., A flying start, then a slow slip, Science, 305, 1126–1127, 2005.

    Article  Google Scholar 

  • Efron, B., Bootstrap methods: Another look at the jackknife, Ann. Stat., 7, 1–26, 1979.

    Article  Google Scholar 

  • Jiang, C. and Z. Wu, Test of the preshock accelerating moment release (AMR) in the case of the 26 December 2004 Mw 9.0 Indonesia earthquake, Bull. Seismol. Soc. Am., 95, 2016–2025, 2005.

    Article  Google Scholar 

  • Lay, T., H. Kanamori, C. J. Ammon, M. Nettles, S. N. Ward, R. Aster, S. L. Beck, S. L. Bilek, M. R. Brudzinski, R. Butler, H. R. DeShon, G. Ekström, K. Satake, and S. Sipkin, The great Sumatra-Andaman earthquake of 26 December 2004, Science, 308, 1127–1133, 2005.

    Article  Google Scholar 

  • Mignan, A., G. King, D. Bowman, R. Lacassin, and R. Dmowska, Seismic activity in the Sumatra-Java region prior to the December 26, 2004 (Mw = 9.0–9.3) and March 28, 2005 (Mw = 8.7) earthquakes, Earth Planet. Sci. Lett., 244, 639–654, 2006.

    Article  Google Scholar 

  • Ogata, Y, Statistical models for earthquake occurrences and residual analysis for point processes, J. Am. Stat. Assoc, 83, 9–27, 1988.

    Article  Google Scholar 

  • Page, E. S., Continuous inspection schemes, Biometrika, 41, 100–114, 1954.

    Article  Google Scholar 

  • Reasenberg, P., Second-Order Moment of Central California Seismicity, 1969–1982, J. Geophys. Res., 90, 5479–5495, 1985.

    Article  Google Scholar 

  • Sakamoto, Y, M. Ishiguro, and G. Kitagawa, Akaike information criterion statistics, 290 pp, D. Reidel, Dordrecht, 1983.

    Google Scholar 

  • Smith, W. D., Resolution and significance assessment of precursory changes in mean earthquake magnitudes, Geophys. J. Int., 135, 515–522, 1998.

    Article  Google Scholar 

  • Tanaka, S., Tidal triggering of earthquakes precursory to the 2004 MW=9.0 off Sumatra earthquake, AOGS 2 Annual Meeting, Abstract, 58-SE-A0453, 2006.

    Google Scholar 

Download references

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Imoto, M., Yamamoto, N. Premonitory changes in seismicity prior to the Great Sumatra-Andaman earthquake of December 26, 2004. Earth Planet Sp 60, 693–697 (2008). https://doi.org/10.1186/BF03353132

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  • DOI: https://doi.org/10.1186/BF03353132

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