We perform an analysis on the dissipative Olami-Feder-Christensen model on a small world topologyconsidering avalanche size differences. We show that when criticality appears, the probability density functionsPDFs for the avalanche size differences at different times have fat tails with a q-Gaussian shape. Thisbehavior does not depend on the time interval adopted and is found also when considering energy differencesbetween real earthquakes. Such a result can be analytically understood if the sizes released energies of theavalanches earthquakes have no correlations. Our findings support the hypothesis that a self-organized criticalitymechanism with long-range interactions is at the origin of seismic events and indicate that it is notpossible to predict the magnitude of the next earthquake knowing those of the previous ones.

Analysis of Self-Organized Criticality in the OFC model and in real earthquakes

PLUCHINO, ALESSANDRO;LATORA, Vito Claudio;RAPISARDA, Andrea
2007-01-01

Abstract

We perform an analysis on the dissipative Olami-Feder-Christensen model on a small world topologyconsidering avalanche size differences. We show that when criticality appears, the probability density functionsPDFs for the avalanche size differences at different times have fat tails with a q-Gaussian shape. Thisbehavior does not depend on the time interval adopted and is found also when considering energy differencesbetween real earthquakes. Such a result can be analytically understood if the sizes released energies of theavalanches earthquakes have no correlations. Our findings support the hypothesis that a self-organized criticalitymechanism with long-range interactions is at the origin of seismic events and indicate that it is notpossible to predict the magnitude of the next earthquake knowing those of the previous ones.
2007
Self-Organized Criticality; Earthquakes; Critical systems
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/24929
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