Earthquake mechanism and predictability shown by a laboratory fault
Pure and Applied Geophysics PAGEOPH
By: C.-Y. King
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Abstract
Slip events generated in a laboratory fault model consisting of a circulinear chain of eight spring-connected blocks of approximately equal weight elastically driven to slide on a frictional surface are studied. It is found that most of the input strain energy is released by a relatively few large events, which are approximately time predictable. A large event tends to roughen stress distribution along the fault, whereas the subsequent smaller events tend to smooth the stress distribution and prepare a condition of simultaneous criticality for the occurrence of the next large event. The frequency-size distribution resembles the Gutenberg-Richter relation for earthquakes, except for a falloff for the largest events due to the finite energy-storage capacity of the fault system. Slip distributions, in different events are commonly dissimilar. Stress drop, slip velocity, and rupture velocity all tend to increase with event size. Rupture-initiation locations are usually not close to the maximum-slip locations. ?? 1994 Birkha??user Verlag.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Earthquake mechanism and predictability shown by a laboratory fault |
| Series title | Pure and Applied Geophysics PAGEOPH |
| DOI | 10.1007/BF00874338 |
| Volume | 143 |
| Issue | 1-3 |
| Year Published | 1994 |
| Language | English |
| Publisher location | Birkha??user-Verlag |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Pure and Applied Geophysics PAGEOPH |
| First page | 457 |
| Last page | 482 |