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For those who study earthquakes, one major challenge has been trying to understand all the physics of a fault -- both during an earthquake and at times of "rest" -- in order to know more about how a particular region may behave in the future. Now, researchers at the California Institute of Technology (Caltech) have developed the first computer model of an earthquake-producing fault segment that reproduces, in a single physical framework, the available observations of both the fault's seismic (fast) and aseismic (slow) behavior.
"Previous research has mostly either concentrated on the dynamic rupture that produces ground shaking or on the long periods between earthquakes, which are characterized by slow tectonic loading and associated slow motions—but not on both at the same time,"
This image shows an array of geodetic instruments at the surface of Earth and activity that was modeled on the fault below. The yellow colors indicate the highest speeds of slippage between plates along the San Andreas Fault.
The reddish colors represent slower seismic speeds and the bluish colors indicate slippage at velocity close to the long-term advance of the San Andreas Fault. The dark color indicates a portion of the fault where the velocity is so small that it appears completely locked.
[Credit: Sylvain Barbot / Caltech]edit on 13-5-2012 by PerfectPerception because: (no reason given)
Originally posted by PurpleChiten
So they may eventually be able to computer animate models of all the known faults and be able to predict when a quake may occur based on the very small movements that go unnoticed and their effect on the fault? ... I think....
"Currently, seismic hazard studies rely on what is known about past earthquakes," he says. "However, the relatively short recorded history may not be representative of all possibilities, especially rare extreme events. This gap can be filled with physical models that can be continuously improved as we learn more about earthquakes and laws that govern them.”
Originally posted by watchitburn
That is cool.
I wonder why it took so long for someone to do a "Big Picture" study of fault physics?
You should message Puterman, I'm sure he could provide some more insight into this for those of us who are less educated in earthquake stuff.
Originally posted by PerfectPerception
4 flags and only one star Was my original post so atrocious it is undeserving of any love?
I love flags too! no discriminating here,only off topic remarks of the mysteries of the points system/members give & take philosophy etc. One of the greatest,most mind boggling mysteries to ever grace our existence ::twilight zone music fades in:: ( I jest )
I am honestly surprised this did not get more attention,I am not talking flags/stars either. I should of made my own thread title perhaps?
Not that this first computer model by cal-tech is necessarily a stunning,profound breakthrough we could be hoping for but...It is still a step in the right direction as far our understanding and forecasting of earthquakes is concerned. :shrugs:
I admit I did learn a thing or two ,since I am not that familiar with earthquakes overall,for that I am grateful.edit on 14-5-2012 by PerfectPerception because: (no reason given)