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GCSE Tectonic Hazards (Earthquakes (Seismometer (Richter scale (Magnitude)…

- - - - Conservative
  - - - Magnitude
        
        Logarithmic
    - - Damage
        
        Arithmetic
  - - - 6.3
  - - - 7
  - - - Mitigation
- - - - during subduction there is the sudden release of of plates possibly leading to earthquakes of high magnitude.
    - - destructive
- - - - friction causes small eathquakes
      - gently sloping sides
        
        wide base
    - - the lava is able to travel over far distances before it solidifies
    - - new oceanic curst forms as the two continental crusts move apart
      - Mid Atlantic Rige involving Iceland between the North American plate and the Eurasian plate
    - - slab pull
      - ridge push
- - - - The lava has a high viscosity
        
        cooler lava
        
        Doesn't travel far before sets
        
        Lava is so thick massive explosion
        as bubbles get trapped and cant escape
      - destructive boundary
- - - - 180,000 homes were destroyed by the ground shaking
    - - tsunami
      - ground started acting like water (liquefaction
    - - 220,000 people were killed and that would have affected their friends and family also.
    - - The overall cost of damages and losses was $8 billion.
    - - tsunami ruined crops as the ground became salty.
    - - homeless were accommodated in over 1,100 squalid camps
    - - Using the half a billion dollars given to them, 6 permanent homes had been built.