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Japan Sea Central Region Tsunami of May 26, 1983 A Reconnaissance Report (1984) / Chapter Skim
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COASTAL DAMAGE
Pages 20-25

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From page 20...
... DAMAGE FROM FLOODING As the tsunami, which was generated in relatively deep water, approached the coast and entered shallow water, the wave amplitude increased and was then transformed, mostly into bores. These bores rushed up the beach and entered harbors and rivers.
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From page 21...
... This action by the spectators reveals a lack of understanding of tsunami dangers, in general, and of the possibility of subsequent waves, in particular. FLOATING STRUCTURES AND DEBRIS DAMAGE As the tsunami approached the shoreline and entered shallow waters, it created high water levels and strong currents.
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From page 22...
... DAMAGE TO PROTECTIVE STRUCTURES Many coastal flood protective structures were severely damaged during the tsunami. For example, concrete armor units weighing 4 metric tons were moved hundreds of feet inland near the area of maximum run-up (see Figure l7)
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From page 23...
... Source: Akitakai Newspaper Publishing Company, l983.
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From page 24...
... FIGURE l6B Damage to floating structures in Imweon, Korea. Source: Korea Maritime and Port Administration.
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From page 25...
... 25 FIGURE l7 Protective concrete units weighing 4 metric tons were scattered by the tsunami at Mizusawa Beach near Minehama Village in Akita Prefecture. Source: Akitakai Newspaper Publishing Company, l983.
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Key Terms

  • protective structures
  • metric tons
  • units weighing
  • akitakai newspaper
  • strong currents

  • water levels
  • earthquake occurred
  • entered shallow
  • newspaper publishing
  • tsunami warning

  • tsunami reached
  • tsunami approached
  • flood protective
  • floating debris
  • tsunami warnings

  • storm waves
  • graphically illustrate
  • future design
  • meteorological office
  • inland near

  • korean shoreline
  • leading wave
  • amplitude increased
  • feet inland
  • central meteorological

  • port administration
  • structures resulted
  • fixed structures
  • currents produced
  • destructive damage


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