• Scientists are a long way from being able to predict earthquakes.
  • A good prediction must be detailed and accurate.
  • Where an earthquake will occur is the easiest feature to predict.
  • Scientists cannot predict when quakes will occur even to within a few years.
  • Seismometers can detect P-waves a few seconds before more damaging S-waves and surface waves arrive.
  • In this time computers can shut down gas mains, electrical transmission lines, chemical plants, nuclear power plants, mass transit systems, airports, and roadways.
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