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January 14, 2013

Faulty Behavior
Pasadena CA (SPX) Jan 14, 2013
In an earthquake, ground motion is the result of waves emitted when the two sides of a fault move-or slip-rapidly past each other, with an average relative speed of about three feet per second. Not all fault segments move so quickly, however-some slip slowly, through a process called creep, and are considered to be "stable," e.g. not capable of hosting rapid earthquake-producing slip. One common hypothesis suggests that such creeping fault behavior is persistent over time, with currently stable se ... read more

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