Tsunami run-up heights of the 2003 Tokachi-oki earthquake

Yuichiro Tanioka, Yuichi Nishimura, Kazuomi Hirakawa, Fumihiko Imamura, Ikuo Abe, Yoshi Abe, Kazuya Shindou, Hideo Matsutomi, Tomoyuki Takahashi, Kentaro Imai, Kenji Harada, Yuichi Namegawa, Yohei Hasegawa, Yutaka Hayashi, Futoshi Nanayama, Takanobu Kamataki, Yoshiaki Kawata, Yoshinobu Fukasawa, Shunichi Koshimura, Yasunori HadaYusuke Azumai, Kenji Hirata, Akiyasu Kamikawa, Akifumi Yoshikawa, Toru Shiga, Masaki Kobayashi, Seiichi Masaka

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

Tsunami height survey was conducted immediately after the 2003 Tokachi-oki earthquake. Results of the survey show that the largest tsunami height was 4 m to the east of Cape Erimo, around Bansei-onsen, and locally at Mabiro. The results also show that the tsunami height distribution of the 2003 Tokachi-oki earthquake is clearly different from that of the 1952 Tokachi-oki earthquake, suggesting the different source areas of the 1952 and 2003 Tokachi-oki earthquakes. Numerical simulation of tsunami is carried out using the slip distribution estimated by Yamanaka and Kikuchi (2003). The overall pattern of the observed tsunami height distribution along the coast is explained by the computed ones although the observed tsunami heights are slightly smaller. Large later phase observed at the tide gauge in Urakawa is the edge wave propagating from Cape Erimo along the west coast of the Hidaka area.

Original languageEnglish
Pages (from-to)359-365
Number of pages7
Journalearth, planets and space
Volume56
Issue number3
DOIs
Publication statusPublished - 2004

Keywords

  • Edge wave
  • The 2003 Tokachi-oki earthquake
  • Tsunami height survey
  • Tsunami numerical simulation

ASJC Scopus subject areas

  • Geology
  • Space and Planetary Science

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