Northridge Quake (January 17 1994)

This case-study collects various forms of information about the Northridge Earthquake of January 17. The various items more or less have to speak for themselves, for the moment.

General Earthquake Information

  • What is the Richter Scale ?
  • How many Earthquakes over 7.0 are there anyway?
  • How much did we shake ?
  • Press Bulletins from Caltech and the USGS

  • Announcement 94-01-18
  • Weekly Report 94-01-20
  • Weekly Report 94-01-27
  • Data

  • Three Weeks of Aftershocks (read me)
  • Three Weeks of Aftershocks (data)
  • Pictures and Maps

  • Southern California Quakes January 13-19
  • Northridge January 17-19 with an Explanation of Beach Balls
  • Southern California Quakes January 20-26
  • USA,January 15-19
  • USA January 18-24
  • Results and Analysis

  • Time Plot of 3000 Aftershocks
  • Cumulative Distribution of 3000 Aftershocks


  • Webmaster: Jan de Leeuw
    [deleeuw@stat.ucla.edu]

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