Evidence of q-exponential statistics in Greek seismicity

Chris G. Antonopoulos*, George Michas, Filippos Vallianatos, Tassos Bountis

*Corresponding author for this work

Research output: Contribution to journalArticle

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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. (C) 2014 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)71-77
Number of pages7
JournalPhysica. A, Statistical Mechanics and its Applications
Volume409
Early online date9 May 2014
DOIs
Publication statusPublished - 1 Sep 2014

Keywords

  • seismicity
  • non-extensive statistical mechanics
  • q-exponential statistics
  • frequency magnitude distribution
  • interevent times distribution
  • hazard function estimation
  • West Corinth Rift
  • successive earthquakes
  • non-extensivity
  • physics
  • sequence

Cite this

Evidence of q-exponential statistics in Greek seismicity. / Antonopoulos, Chris G.; Michas, George; Vallianatos, Filippos; Bountis, Tassos.

In: Physica. A, Statistical Mechanics and its Applications, Vol. 409, 01.09.2014, p. 71-77.

Research output: Contribution to journalArticle

Antonopoulos, Chris G. ; Michas, George ; Vallianatos, Filippos ; Bountis, Tassos. / Evidence of q-exponential statistics in Greek seismicity. In: Physica. A, Statistical Mechanics and its Applications. 2014 ; Vol. 409. pp. 71-77.
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