FUNDAMENTAL STUDY ON TSUNAMI BEHAVIORS BY SUBMARINE LANDSLIDE USING 2DH3D HYBRID ANALYSIS METHOD
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- URAKAMI Keita
- 京都大学大学院 工学研究科都市社会工学専攻
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- YONEYAMA Nozomu
- 京都大学 防災研究所
Bibliographic Information
- Other Title
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- 2DH3DHybrid手法による海底地すべり津波挙動の基礎的検討
- 2DH3DHybrid シュホウ ニ ヨル カイテイ ジスベリ ツナミ キョドウ ノ キソテキ ケントウ
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Abstract
<p> In 2011, Japan suffered from the tsunami that was beyond expectations due to the Tohoku Earthquake. Therefore, it is necessary to take countermeasures against tsunamis caused by various factors including landslides. First, 2DH3D hybrid analysis method of Yoneyama et al. was applied to a simulation of the past hydraulic model experiments on tsunamis generated by landslides in order to verify its validity. As a result, this method reproduces experimental results with the same accuracy as 3D method and reduces calculation time significantly, demonstrating its effectiveness for landslide tsunami analysis. Subsequently, a numerical experiment was conducted by the same method for the purpose of selecting landslide parameters that particularly affect the tsunami wave height. As a result, it is considered that the shallower the landslide is, the higher the tsunami is. And, the results shows that the landslide mass volume has a great influence on the tsunami scale.</p>
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) 77 (2), I_247-I_252, 2021
Japan Society of Civil Engineers