• Shake Out - California Earthquake Preparedness
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• U.S. Geological Survey Earthquake Hazards Program
  
  USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards
  aftershock earthquake epicenter fault foreshock geologist geophysics hazard hypocenter intensity magnitude mercalli plate scale
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• Earthquakes
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• ABAG Earthquake and Hazards Program
  By trio in Public bookmarks with california earthquake historio history kalifornio map mapo referajxo reference survival tertremo travivado
• aktualaj tertremoj
  By trio in Public bookmarks with earthquake referajxo reference tertremo by 2 users

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