Factors affecting earthquake death toll

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  • Created by: Maybury
  • Created on: 27-03-17 21:54
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  • Factors affecting earthquake death toll
    • How developed the country is
      • Development of structurally sound buildings
      • Population density
    • Other natural disasters caused by the earthquake
      • Tsunami
      • Landslide
      • Liquefaction
      • Volcanic eruption
      • Avalanche
    • Density of population
      • The closer people live, the more people a collapsing building will impact
    • How structurally sound the buildings are
      • Earthquake resistant buildings
        • Developed
          • Damper in roof
          • Shock absorbers
          • Strong steel frame
          • Very deep foundations
          • Strong double glazed windows
          • Cross bracing stops floors collapsing
        • Developing
          • Lightweight thatch roof
          • Walls made of mud and straw packed between wooden slats
          • Simple steel rod foundations
          • Concrete ring ties the walls to the foundations
          • Cross braced wood or bamboo frames
    • Epicentre/ Focus
      • Epicentre location
        • How close it is to civilisation
      • Depth of focus
        • If closer to surface, will be felt more
    • Country's wealth
      • Development of structurally sound buildings
    • Plate boundary the earthquake is on
      • Constructive e.g.Mid-Atlantic ridge
        • Less violent earthquakes
        • Less violent eruptions
      • Destructive e.g.Andes
        • Violent earthquake
        • Violent eruptions
      • Conservative e.g.San Andreas fault
        • Violent earthquake
        • Rare eruptions
      • Collision e.g.Himalayas
        • Violent earthquake
        • Rare eruptions
    • Magnitude of earthquake
      • Greater magnitude - more destructive

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