Field Survey of the 2003 Tokachi-Oki Earthquake Tsunami and Simulation at the Ootsu Harbor Located at the Pacific Coast of Hokkaido, Japan

Y. Tanioka, Y. Nishimura, K. Hirakawa, F. Imamura, I. Abe, Y. Abe, K. Shindou, H. Matsutomi, T. Takahashi, K. Imai, K. Fujima, K. Harada, F. Namegaya, Y. Hasegawa, Y. Hayashi, A. Yoshikawa, T. Siga, A. Kamikawa, M. Kobayash, S. MasakaT. Kamataki, F. Nanayama, K. Satake, Y. Kawata, Y. Fukasawa, S. Koshimura, Y. Hada, Y. Azumai, K. Hirata

Research output: Contribution to journalArticlepeer-review

Abstract

Field survey for the 2003 Tokachi-oki earthquake tsunami was conducted by the scientists from all over Japan [Tanioka et al., 2004a, b]. Large tsunami heights of about 4 m were observed at Hyakuninhama to the east of Cape Erimo and along the beach between Horokayanto and Oikamanai. Those places are close to the source region of the earthquake. In general, tsunami heights gradually decreased to the east and to the west away from those two locations except at Mabiro where a large tsunami height of about 4m was locally observed. The most intensive tsunami survey was conducted at the Ootsu harbor. The survey results indicate that the quay of the harbor was completely submerged by the tsunami, but the road around the harbor was not. Numerical computation of the 2003 Tokachi-oki tsunami was carried out by solving the nonlinear shallow water equations with a moving boundary condition near the Ootsu harbor. The computed tsunami at the Ootsu harbor well explains the above observations.

Original languageEnglish
Pages (from-to)135-156
Number of pages22
JournalAdvances in Natural and Technological Hazards Research
Volume23
DOIs
Publication statusPublished - 2005

Keywords

  • The 2003 Tokachi-oki tsunami
  • Tsunami numerical simulation
  • Tsunami survey

ASJC Scopus subject areas

  • Global and Planetary Change
  • Geography, Planning and Development
  • Economic Geology
  • Computers in Earth Sciences
  • Management, Monitoring, Policy and Law

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