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Characteristics of the 2011 Tohoku Tsunami and introduction of two level tsunamis for tsunami disaster mitigation

机译:2011年东北海啸的特征和二级海啸缓解海啸的介绍

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摘要

Characteristics of the 2011 Tohoku Tsunami have been revealed by collaborative tsunami surveys extensively performed under the coordination of the Joint Tsunami Survey Group. The complex behaviors of the mega-tsunami were characterized by the unprecedented scale and the low occurrence frequency. The limitation and the performance of tsunami countermeasures were described on the basis of tsunami surveys, laboratory experiments and numerical analyses. These findings contributed to the introduction of two-level tsunami hazards to establish a new strategy for tsunami disaster mitigation, combining structure-based flood protection designed by the Level-1 tsunami and non-structure-based damage reduction planned by the Level-2 tsunami.
机译:在联合海啸调查组的协调下,广泛开展的合作海啸调查揭示了2011年东北海啸的特征。特大海啸的复杂行为具有前所未有的规模和较低的发生频率。在海啸调查,实验室实验和数值分析的基础上,描述了海啸对策的局限性和表现。这些发现有助于引入两级海啸危害,从而建立了减轻海啸灾难的新策略,将一级海啸设计的基于结构的防洪措施与二级海啸计划的基于非结构的减灾相结合。

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