Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
Online ISSN : 1883-8944
Print ISSN : 1884-2399
ISSN-L : 1883-8944
Paper (In Japanese)
STUDY ON TSUNAMI DAMAGE MECHANISM IN FUKUSHIMA PREFECTURE FOCUSING ON THE GENERATION OF BORES
Shohei OKUMAShinji SATOYusuke YAMANAKAHiroshi SANUKI
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2015 Volume 71 Issue 1 Pages 58-68

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Abstract

 Destruction mechanisms of coastal structures due to the 2011 Tohoku Tsunami were investigated on the basis of field surveys in Fukushima Prefecture. Severe destruction appeared to be developed by the action of breaking bores. Laboratory experiments demonstrated that the angle of the tsunami front was an essential parameter for the generation of breaking bores. Larger wave force was observed as the angle of the tsunami front became steeper. Numerical simulation revealed that such a steep tsunami was developed in the central part of Fukushima Prefecture, where the reflection of the preceding tsunami by coastal cliff enhanced the steepness of the largest tsunami.

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© 2015 by Japan Society of Civil Engineers
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