NUMERICAL SIMULATION OF 1792 TSUNAMI BY UNZEN-MAYUYAMA COLLAPSE USING LANDSLIDE MODEL AND TWO LAYER MODEL
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- IIZUKA Keiichi
- 東電設計株式会社
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- SAKAI Shinsuke
- 株式会社阪神コンサルタンツ
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- ISHIHARA Fumitaka
- 株式会社ユニック
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- KIMURA Tatsuto
- 東電設計株式会社
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- TANI Tomoyuki
- 東京電力ホールディングス株式会社
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- OSHIMA Takamitsu
- 東京電力ホールディングス株式会社
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- YAMASHITA Kyohei
- 東京電力ホールディングス株式会社
Bibliographic Information
- Other Title
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- 土砂崩壊モデルと二層流モデルを用いた1792年眉山崩壊による津波の再現シミュレーション
- ドシャ ホウカイ モデル ト ニ ソウリュウ モデル オ モチイタ 1792ネン ビサン ホウカイ ニ ヨル ツナミ ノ サイゲン シミュレーション
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Abstract
Subaerial landslides sometimes rushed into the sea and generated giant tsunamis, for example, Ariake Sea Tsunami in 1792 and Lituya Bay Tsunami in 1958. Several models have been proposed to evaluate tsunami generated by landslide but not enough knowledge has been obtained. In this study, we proposed a new practical method in which the motion of landslide was simulated by TITAN2D which is a granular flow model code for a incompressible Coulomb continuum, and the propagation of tsunami was simulated by using two-layer shallow water model. The method was verified by the simulation of 1792 Ariake Sea Tsunami caused by collapse of the eastern slope of Mayuyama. The result of the landslide simulation was approximately consistent with the measured area of deposition, and the result of the tsunami simulation was compared with tsunami trace heights and satisfied criteria of JSCE.
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) 73 (2), I_313-I_318, 2017
Japan Society of Civil Engineers