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Volume 56 Supplement 3

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

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


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 Tokachioki 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.


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Correspondence to Yuichiro Tanioka.

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Tanioka, Y., Nishimura, Y., Hirakawa, K. et al. Tsunami run-up heights of the 2003 Tokachi-oki earthquake. Earth Planet Sp 56, 359–365 (2004).

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