LABORATORY STUDY ON TSUNAMI REDUCTION EFFECT OF TEIZAN CANAL
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- WATANABE Shun
- Waseda University
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- MIKAMI Takahito
- Waseda University
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- SHIBAYAMA Tomoya
- Waseda University
Bibliographic Information
- Other Title
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- 貞山運河の津波減衰効果に関する実験的研究
- テイサン ウンガ ノ ツナミ ゲンスイ コウカ ニ カンスル ジッケンテキ ケンキュウ
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Abstract
During the 2011 Tohoku Tsunami, there were eyewitness testimonies that tsunami inundation height was reduced due to Teizan-canal along the coast of Sendai Plain. The present study aims to understand the tsunami reduction effect of a canal by using the field data and the results of a laboratory experiment. The field data obtained from the 2011 event showed that tsunami inundation heights were reduced due to Teizan-canal at some locations. The laboratory experiments were carried out in a tsunami basin with a chamber type tsunami generator. In order to investigate the tsunami reduction effect of a canal, the amount of overflowing water behind a canal model was measured in the experiments. The tsunami height, tsunami length, and the water depth in the canal model were changed to test the sensitivity. The results of the experiment showed that the canal reduced the amount of overflowing water. It was found that the reduction effect with a small water depth in the canal was larger than that with large water depth, and the waveform could affect the reduction effect.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 71 (2), I_301-I_306, 2015
Japan Society of Civil Engineers
