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Volume 56 Supplement 3

Special Issue: Special section for the 2003 Tokachi-oki earthquake

The tsunami source area of the 2003 Tokachi-oki earthquake estimated from tsunami travel times and its relationship to the 1952 Tokachi-oki earthquake

Earth, Planets and Space volume 56, pages 367–372 (2004)Cite this article

Abstract

We estimate the tsunami source area of the 2003 Tokachi-oki earthquake (Mw 8.0) from observed tsunami travel times at 17 Japanese tide gauge stations. The estimated tsunami source area (∼ 1.4 × 104 km2) coincides with the western-half of the ocean-bottom deformation area (∼2.52 × 104 km2) of the 1952 Tokachi-oki earthquake (Mw 8.1), previously inferred from tsunami waveform inversion. This suggests that the 2003 event ruptured only the western-half of the 1952 rupture extent. Geographical distribution of the maximum tsunami heights in 2003 differs significantly from that of the 1952 tsunami, supporting this hypothesis. Analysis of first-peak tsunami travel times indicates that a major uplift of the ocean-bottom occurred approximately 30 km to the NNW of the mainshock epicenter, just above a major asperity inferred from seismic waveform inversion.

References

  • The Central Meteorological Observatory, Report of the Tokachi-Oki earthquake of March 4, 1952, Quarterly Journal of Seismology, 17, 135 pp., 1953.

    Google Scholar 

  • Hatori, T., Reexamination of the wave source of the 1952 Tokachi-Oki tsunami, Zisin, 2, 26, 206–208, 1973 (in Japanese with English abstract and figure captions).

    Google Scholar 

  • Hirata, K., E. L. Geist, K. Satake, Y. Tanioka, and S. Yamaki, Slip distribution of the 1952 Tokachi-Oki earthquake (M8.1) along the Kuril Trench deduced from tsunami waveform inversion, J. Geophys. Res., 108(B4), 2196, doi:10.1029/2002JB001976, 2003.

    Article  Google Scholar 

  • Kasahara, M., A fault model of the Tokachi-oki earthquake of 1952, Seismol. Soc. Jpn. Programme Abstr., No. 2, 90, 1975 (in Japanese).

    Google Scholar 

  • Kikuchi, M. and H. Kanamori, Note on Teleseismic Body-Wave Inversion Program, http://www.eri.u-tokyo.ac.jp/ETAL/KIKUCHI/index.html, 2003.

  • Tanioka, Y., K. Hirata, R. Hino, and T. Kanazawa, Slip distribution of the 2003 Tokachi-oki earthquake estimated from the tsunami waveform inversion, Earth Planets Space, 56, this issue, 373–376, 2004a.

    Article  Google Scholar 

  • Tanioka, Y., Y. Nishimura, K. Hirakawa, F. Imamura, I. Abe, Y. Abe, K. Shindou, H. Matsutomi, T. Takahashi, K. Imai, K. Harada, Y. Namegawa, Y. Hasegawa, Y. Hayashi, F. Nanayama, T. Kamataki, Y. Kawata, Y. Fukasawa, S. Koshimura, Y. Hada, Y. Azumai, K. Hirata, A. Kamikawa, A. Yoshikawa, T. Shiga, M. Kobayashi, and S. Masaka, Tsunami run-up heights of the 2003 Tokachi-oki earthquake, Earth Planets Space, 56, this issue, 359–365, 2004b.

    Article  Google Scholar 

  • Yamanaka, Y. and M. Kikuchi, Source processes of the recurrent Tokachi-oki earthquake on September 26, 2003, inferred from teleseismic body waves,, Earth Planets Space, 55, e21–e24, 2003.

    Article  Google Scholar 

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Author information

Authors and Affiliations

  1. Deep Sea Research Department, Japan Marine Science and Technology Center, 2-15 Natsuhima-cho, Yokosuka, 237-0061, Japan

    Kenji Hirata

  2. Institute of Seismology and Volcanology, Hokkaido University, N10W8 Kita-ku, Sapporo, 060-0810, Japan

    Yuichiro Tanioka

  3. Active Fault Research Center, National Institute of Advanced Industrial Science and Technology, Site C7 1-1-1 Higashi, Tsukuba, 305-8567, Japan

    Kenji Satake

  4. Seamus Ltd., 2235 Kizaki, Toyosaka, 950-3304, Japan

    Shigeru Yamaki

  5. U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA, 94025, USA

    Eric L. Geist

Authors
  1. Kenji Hirata
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  2. Yuichiro Tanioka
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  3. Kenji Satake
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  4. Shigeru Yamaki
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  5. Eric L. Geist
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Correspondence to Kenji Hirata.

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Hirata, K., Tanioka, Y., Satake, K. et al. The tsunami source area of the 2003 Tokachi-oki earthquake estimated from tsunami travel times and its relationship to the 1952 Tokachi-oki earthquake. Earth Planet Sp 56, 367–372 (2004). https://doi.org/10.1186/BF03353066

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  • DOI: https://doi.org/10.1186/BF03353066

Key words

  • The 2003 Tokachi-oki earthquake
  • tsunami
  • tide gauge records
  • the 1952 Tokachi-oki earthquake