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Earthquake precursors

  1. Jul 9, 2008 #1
    i came across seismicity rate change before major quake..
    and also changes in majority of large magnitude earthquake...

    it is usually seen that before major earthquakes there is first increase in seismicity rate and then a sudden decrease in seismicity..........i understand this decrease in seismicity that i must be due to stress build up in the faults..but y is this increase ???
    if this increase which we are considering a foreshock is aftershock of some previous earthquake then increase is understood as fall in stress ...

    if there is any better earthquake precursors??...
    which is this most studied earthquake precursors?
    Last edited: Jul 9, 2008
  2. jcsd
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