Transcript for Computer Animation of Loma Prieta Aftershocks, segment 11 of 12

You have seen how the Loma Prieta earthquake was anticipated because it occurred in a locked section of the fault. There was relatively little seismicity in the Loma Prieta section at the San Andreas Fault in the previous decades. When viewed in time lapse animations, the aftershocks quickly fill the rupture area and then slowly diminish with time. Three-dimensional animations reveal the dipping fault plane and the uneven and nonplanar distribution of aftershocks on the fault surface. The wide variety of earthquake focal mechanisms is apparent when focal spheres are viewed in color and in a three-dimensional animation.


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at the School of Information and Library Science, University of North Carolina at Chapel Hill