Characteristics of Tsunamis and Mitigation Planning

지진해일의 특성 및 방재대책

  • Cho, Yong-Sik (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Ha, Tae-Min (Department of Civil and Environmental Engineering, Hanyang University)
  • 조용식 (한양대학교 건설환경공학과) ;
  • 하태민 (한양대학교 건설환경공학과)
  • Received : 2010.08.02
  • Accepted : 2010.08.19
  • Published : 2010.08.31

Abstract

Recently, many tsunamis triggered by impulsive undersea ground motions occurred in subduction zones around the Pacific Ocean area including the East Sea surrounded by Korea, Japan and Russia. The wave height of a tsunami may be in the order of several meters, while the wavelength can be up to 1,000 km in the ocean, where the average water depth is about 4 km. A tsunami could cause a severe coastal flooding and property damage not only at neighboring countries but also at distant countries. A fundamental and economic way to mitigate unusual tsunami attacks is to construct tsunami hazard maps along coastal areas vulnerable to tsunami flooding. These maps should be developed based on the historical tsunami events and projected scenarios. The map could be used to make evacuation plans in the event of a real tsunami assault.

Acknowledgement

Grant : 항만권역 태풍 및 지진해일 재해대응체계 구축

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