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Authors: Caruso, F.*
Pluchino, A.*
Latora, V.*
Vinciguerra, S.*
Rapisarda, A.*
Title: Analysis of self-organised criticality in the Olami-Feder-Christensen model and in real earthquakes
Title of journal: Phys. Rev. E
Series/Report no.: / 75 (2007)
Publisher: American Physical Society
Issue Date: 14-May-2007
DOI: 10.1103/PhysRevE.75.055101
Keywords: SOC, earthquakes interaction
Abstract: We perform an analysis on the dissipative Olami-Feder-Christensen model on a small world topology considering avalanche size differences. We show that when criticality appears, the probability density functions (PDFs) for the avalanche size differences at different times have fat tails with a q-Gaussian shape. This behavior does not depend on the time interval adopted and is found also when considering energy differences between real earthquakes. Such a result can be analytically understood if the sizes (released energies) of the avalanches (earthquakes) have no correlations. Our findings support the hypothesis that a self-organized criticality mechanism with long-range interactions is at the origin of seismic events and indicate that it is not possible to predict the magnitude of the next earthquake knowing those of the previous ones.
Appears in Collections:05.01.04. Statistical analysis
Papers Published / Papers in press

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