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Dominant periods of the 2004 Sumatra tsunami and the estimated source size

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Abstract

Dominant periods determined from tide gauge records of the 2004 Sumatra tsunami were used to estimate the size of the tsunami source. A period of 40 minutes dominates the initial motions and spectra are consistent with a fault width of 110 km for a sea depth of 1000 m. Another dominant period of 140 minutes in the spectra observed at the direction of fault azimuth can be explained using a fault length of 1200 km. These values taken together are consistent with source formation on the continental slope with width of 110 km and length of 1200 km along Nicobar and Andaman Islands.

References

  1. Abe, K., Tsunami resonance curve on dominant periods observed at bays, In Tsunamis: Case Studies and Recent Developments, Advances in Natural Technological Hazards Research, vol. 23, edited by K. Satake, 356 pp. Springer Publishers, 2005.

  2. Fujima, K., Characteristics of Indian Ocean Tsunami in Maldive, Abst. Meeting of the Sumatra earthquake on 26 December 2004, 2005 (in Japanese).

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

  4. Satake, K., The 2004 Sumatra earthquake and tsunami in Indian Ocean: Seismological questions and future research, Abst. 2005 Japan Earth and Planet. Sci, Joint Meeting, 2005 (in Japanese).

  5. Tsuji, Y., Y. Tanioka, Y. Nishimura, H. Matsutomi, T. Sakakiyama, T. Kamataki, Y. Murakami, Y. Namegaya, M. Matsuyama, M. Andrew, G. Guy, N. Sindhu, W. Budi, S. Inyoman, T. Rahmat, Alphonso, Yudhicara, Distribution of damage and heights of the tsunami of the 2004 Sumatra Earthquake in the city area of Banda Aceh and the vicinity, Abst. 2005 Japan Earth and Planet. Sci, Joint Meeting, 2005 (in Japanese).

  6. Yamanaka, K., Source process of the 2004 Sumatra earthquake, Abst. 2005 Japan Earth and Planet. Sci, Joint Meeting, 2005 (in Japanese).

  7. Yamashita, T. and R. Sato, Generation of tsunami by fault model, J. Phys. Earth, 22, 415–440, 1974.

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Correspondence to Kuniaki Abe.

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Abe, K. Dominant periods of the 2004 Sumatra tsunami and the estimated source size. Earth Planet Sp 58, 217–221 (2006) doi:10.1186/BF03353381

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Key words

  • Dominant period
  • Sumatra tsunami
  • tide gauge records