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Evidence of q-exponential statistics in Greek seismicity

Antonopoulos, CG and Michas, G and Vallianatos, F and Bountis, T (2014) 'Evidence of q-exponential statistics in Greek seismicity.' Physica A: Statistical Mechanics and its Applications, 409. 71 - 77. ISSN 0378-4371

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Abstract

We study the seismicity (global seismic activity) that occurred in Greece between 1976 and 2009 based on the dataset reported in Makropoulos et al. (2012), using concepts of non-extensive Statistical Physics. By considering the entire and declustered datasets, for which the aftershocks have been removed, we initially investigate the frequency-magnitude distribution and find that both datasets are well approximated by a physical model derived in the framework of non-extensive Statistical Physics. We then carry out a study of the distribution of interevent times of seismic events for different magnitude thresholds and discover that the data are well approximated by a statistical distribution of the q-exponential type that allows us to compute analytically the risk function of earthquake production. Our analysis thus reveals further evidence that the underlying dynamical process of earthquake birth reflects a kind of nonlinear memory due to long-term persistence of seismic events. © 2014 Elsevier B.V. All rights reserved.

Item Type: Article
Subjects: Q Science > QA Mathematics
Divisions: Faculty of Science and Health > Mathematical Sciences, Department of
Depositing User: Jim Jamieson
Date Deposited: 20 Oct 2015 12:31
Last Modified: 17 Aug 2017 17:31
URI: http://repository.essex.ac.uk/id/eprint/15316

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