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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, pages367–372(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

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

  2. 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).

  3. 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.

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

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

  6. 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.

  7. 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.

  8. 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.

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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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Key words

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