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Earthquake Hazards

Earthquake Hazards. Green = Write Red = Don’t Write. 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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Earthquake Hazards

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  1. Earthquake Hazards Green = Write Red = Don’t Write

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

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

  4. 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

  5. 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

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

  7. 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

  8. The Future of Prediction Earthquakes often occur in clusters Foreshocks: Vibrations occurring prior to a main quake, sometimes up to 2 hours in advance

  9. Video https://www.youtube.com/watch?v=h3l94aZSbGM Earthquake Hazards: Ground Failure

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

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