open access

https://hdl.handle.net/2115/49122

Evolution of the 2011 Tohoku Earthquake Tsunami on the Pacific Coast of Hokkaido

英語

edge wave

2012-03

World Scientific Publishing

Coastal Engineering Journal

54(1)

1250002

A numerical computation of the 2011 Tohoku earthquake tsunami was performed to identify fundamental features of the tsunami evolution along the coast of Hokkaido, Japan. Edge waves formed at multiple locations where the refracted tsunami focused, governing local surface oscillations and regional variations in tsunami height along the Pacific coast of Hokkaido. The computation reasonably reproduced the distribution of surveyed tsunami height as well as the time records of surface elevation recorded at ports in Hokkaido. The major features of the frequency spectrum for the 2011 Tohoku tsunami were identical to those for the 2003 Tokachi-oki earthquake tsunami; inherent local properties of surface oscillation caused by the passage of edge waves existed, determined by the local bathymetry.

学術雑誌論文

Accepted Manuscript

Electronic version of an article published as Coastal Engineering Journal, 54(1), 2012, 1250002, 10.1142/S0578563412500027 © copyright World Scientific Publishing Company. http://www.worldscinet.com/cej/cej.shtml

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