Living with Earthquakes - Japan

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  • Living with Earthquakes - Japan
    • 400 earthquakes/day - since 2000 23 7.0Mw Earthquakes - 16k fatalities
    • Tectonic Setting
      • Movements along plate boundaries offshore Japan - risk of tsunamis
        • Pacific coastal zone particularly vulnerable highly populous (Tokyo 36mil, Osaka 19 mil etc.)
    • Tohoku
      • Political impacts
        • Japanese gov injected millions of yen, increased gov debt
        • Large popular political movement against nuclear power emerged
          • Radiated to Western Europe with Germany justifying anti-nuclear views.
      • Economic impacts
        • Repair cost roughly £181 billion
        • 47,500 buildings destroyed
        • 230,000 vehicles destroyed
        • 15 ports damaged
        • 4.4 million households lost electricity
        • shutdown of 11 nuclear reactors
          • Fukushima plant was decommissioned
            • release of radioactivity causing 30km evacuation zone
              • also affected fishing industry in the Pacific Ocean
        • Transport infrastructure decimated, 23 stations swept away
        • Stock market collapse with damage to Sony, Toyota, Panasonic
      • Social impacts
        • 16k fatalities, 6k injuries
          • infrastructure damage meant dead body handling was difficult
            • mass graves
        • 100,000 children displaced as consequence
          • At one primary school 74/108 students perished
        • Destruction of infrastructure (housing, schools, health centres) took 5 years to repair
      • 11 March 2011, 9.0 Mw earthquake occurred on Pacific-North American plate boundary
        • Epicentre was 70km offshore of Honshu
          • the island moved 2.4m East
          • seabed rose by 7m and moves westwards 50m
          • 40.5m tsunamis
            • reached as far as 10km inland
            • waves of up to 2.4m caused $10mil damage in California + Oregon
        • Aftershocks of up to 7-8Mw

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