瀬戸内海における津波来襲時の錨泊船舶の挙動に関する研究

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  • A study on ship anchor mooring motions induced by tsunami attack in Seto Inland Sea
  • 瀬戸内海における津波来襲時の錨泊船舶の挙動に関する研究[含 質疑応答]
  • セトナイカイ ニ オケル ツナミ ライシュウジ ノ ビョウハク センパク ノ キョドウ ニ カンスル ケンキュウ ガン シツギ オウトウ

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In the near future, it is concerned about the occurrence of huge earthquake on the Nankai Trough off the coast of Shikoku, such as Nankai and TouNankai earthquake. A tsunami occurring at the Nankai Trough would not only raise the sea surface, it would also generate strong horizontal currents along the coastal region of Osaka Bay, after passing through the Kii Channel, which is the entrance to the bay and the Seto Inland Sea. Ships in a bay may be forced to move by the currents and unexpected phenomena may occur such as the impact of large forces on a pier, uncontrollable lateral motion, and collision of a ship with the breakwater and drifting and grounding. The purpose of this paper is to minimize tsunami disaster for ships in the seto inland sea. In this study, we carried out several types of simulations of ship evacuation from tsunami attack in the seto inland sea. The main conclusions can be drawn from these simulations, a ship can withstand the tsunami by anchoring in the evacuation area.

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