Earthquake Hazards

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Earthquake Hazards

• Green Write
• Red Dont Write

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• Liquefaction occurs when loose soil temporarily
  takes on some of the properties of a liquid
• How does liquefaction "work
• Liquefaction Damage in Christchurch

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• Aftershock smaller earthquakes originating close
  to the focus of the main earthquake.
• Can cause more damage than the main earthquake!

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• Tsunami a large ocean wave produced by an
  earthquake, a mass movement such as a landslide,
  or an impact event such as a meteor landing
• Tsunamis are NOT caused by weather
• Japan Tsunami
• Indonesia Tsunami 2004

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Other possible hazards

• Buildings or bridges may collapse or become
  unsafe
• Building Damage from Earthquakes
• Bridge Moving in Chile EQ
• B. Subsidence land sinks, creating sinkholes

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• C. landslides- Moving of materials downhill often
  triggered by
• earthquakes
• D. Fire from gas line ruptures
• E. Water pipes might break causing flooding

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Predicting Earthquakes

• Assumption earthquakes are periodic events
• Seismic gaps places where the fault line has not
  moved for a long period of time, increasing the
  likelihood of an earthquake

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The Future of Prediction

• Earthquakes often occur in clusters
• Foreshocks Vibrations occurring prior to a main
  quake, sometimes up to 2 hours in advance

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WWYD?

• What would you do to protect yourself from
  earthquakes and the associated hazards?
• Develop an earthquake preparedness plan.