Skip to main content

Advertisement

Tsunami generated by the 2004 Kushiro-oki earthquake

Article metrics

  • 204 Accesses

  • 3 Citations

Abstract

The 2004 Kushiro-oki earthquake generated a small tsunami that was observed at two tide gauge stations located on the Pacific coast of Hokkaido Province. Analysis of the tsunami waveforms shows that the slip amount of the fault was 2.1 m. The seismic moment was calculated to be 3.1×1019 Nm, which is consistent with the results of previous seismological studies. Tsunami simulation results indicate that a small first wave at Urakawa is caused by large shallow water off Cape Erimo. The tsunami generated from the source area off Kushiro circumvents the shallow area off the cape, propagates through the deep sea, and arrives at Urakawa as a small first wave. Larger tsunamis are propagated through the shallow region slowly and arrive at Urakawa as a later tsunami. These results suggest that a tsunami from a future large Nemuro-oki earthquake will also arrive at the west coast of Hidaka with a small first wave and large later phases.

References

  1. Earthquake Research Committee, Long-term evaluation of seismicity along the Kuril Trench, Publications of Earthquake Research Committee II, 1–74, 2004.

  2. Gonzalez, I. F., K. Satake, E. F. Boss, and H. O. Mofjeld, Edge wave and non-trapped modes of the 25 April 1992 Cape Mendocino Tsunami, Pure Appl. Geophys., 144, 409–426, 1995.

  3. Hirata, K., E. Geist, K. Satake, Y. Tanioka, and S. Yamaki, Slip distribution of the 1952 Tokachi-oki earthquake (M 8.1) along the Kuril Trench deduced from tsunami waveform inversion, J. Geophys. Res., 108(B4), 2196, doi:10.1029/2002JB001976, 2003.

  4. Jonshon, J. M., Heterogeneous coupling along Alaska-Aleutians as inferred from tsunami, seismic, and geodetic inversions, Adv. Geophys., 39, 1–110, 1998.

  5. Katsumata, K., N. Wada, and M. Kasahara, Newly imaged shape of the deep seismic zone within the subducting Pacific plate beneath the Hokkaido corner, Japan-Kurile arc-arc junction, J. Geophys. Res., 108(B12), 2565, doi:10.1029/2002JB002175, 2003.

  6. Katsumata, K., Y. Yamanaka, The 29 November 2004 M7.1 Kushiro-oki earthquake: A event between the on-going seismic quiescence area and the asperity ruptured by the 1973 Nemuro-oki earthquake, Geophys. Bull. Hokkaido Univ., 69, 23–39, 2006.

  7. Okada, Y., Surface deformation due to shear and tensile faults in a halfspace, Bull. Seismol. Soc. Am., 75, 1135–1154, 1985.

  8. Tanioka, Y., Y. Nishimura, K. Hirakawa, F. Imamura, I. Abe, K. Shin-dou, H. Matsutomi, T. Takahashi, K. Imai, K. Harada, Y. Namegaya, 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, 359–365, 2004.

Download references

Author information

Correspondence to Yuichiro Tanioka.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Tanioka, Y., Katsumata, K. Tsunami generated by the 2004 Kushiro-oki earthquake. Earth Planet Sp 59, e1–e3 (2007) doi:10.1186/BF03352676

Download citation

  • 2004 Kushiro-oki earthquake
  • tsunami numerical simulation
  • tsunami disaster mitigation