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http://hdl.handle.net/2122/3433
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 | 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 | Subject Classification: | 05. General::05.01. Computational geophysics::05.01.04. Statistical analysis | 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: | Article published / in press |
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