Long-term slip movements along a zone of two parallel faults are simulated, using a 3-D deterministic model. Two different cases of close and distant faults are considered; fault interactions caused by internal stresses are weaker in the second case, which results in an exponential distribution of seismic energy release obtained for a zone of distant faults. Patterns of energy release are different for the case of close (i.e., interacting) faults, for which we obtain a power-law distribution. It is known that a power-law statistics privileges bigger events; fault interactions are responsible for this effect.
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