Non-extensive statistical analysis of seismicity in the area of Javakheti, Georgia

Analysis of temporal variation of earthquake occurrences in Caucasus from 1960 to 2011

“…Our earlier findings of fragment asperity interaction support conclusion about changed inter-correlations in tectonic system during different stages of seismic cycles. Indeed, from the nonextensive analysis of Caucasian earthquakes magnitude distribution it was concluded that during relatively quiet time periods (when earthquakes of small magnitude occur) the ordering within the system of fault fragments decreases (Matcharashvili et al, 2011). During these periods, when accumulated stress energy is supposedly released mostly through the relative movement of small fragments, the amount of accumulated stress is relatively small and thus correlated behavior of the whole system can not yet be initiated (Chelidze and Matcharashvili, 2007;Matcharashvili et al, 2011).…”

“…Indeed, from the nonextensive analysis of Caucasian earthquakes magnitude distribution it was concluded that during relatively quiet time periods (when earthquakes of small magnitude occur) the ordering within the system of fault fragments decreases (Matcharashvili et al, 2011). During these periods, when accumulated stress energy is supposedly released mostly through the relative movement of small fragments, the amount of accumulated stress is relatively small and thus correlated behavior of the whole system can not yet be initiated (Chelidze and Matcharashvili, 2007;Matcharashvili et al, 2011). At the same time, it is obvious that dynamics of a random and less correlated system makes possible for certain internal cycles to be easier trapped and amplified by external periodic influences; strength of some cyclic components in time evolution can be increased.…”

Tsallis-Based Nonextensive Analysis of the Southern California Seismicity

“…For increasing q, the physical state goes away from equilibrium; and in case of seismicity, this means that the fault planes and fragment filling the gap between them are not in equilibrium, leading to an increased seismic activity to be expected [12]. In [20] the decrease of the nonextensivity parameter q was observed during relatively quiet periods, characterized mainly by the occurrence of small magnitude events; this could reveal that the order within the system of fault is decreased and the amount of accumulated stress is not yet enough to initiate a correlated behavior of the whole system [21]. When a strong earthquake occurs, more correlated behavior of the system constituents is assumed to take place, with the emergence of short and long range correlations, which induce an increase of the nonextensivity parameter q.…”

A Nonextensive Statistical Physics Analysis of the 1995 Kobe, Japan Earthquake

“…The fragment-asperity model has been applied to various earthquake catalogs (SILVA et al 2006;VILAR et al 2007;TELESCA 2010aTELESCA , b, c, 2011TELESCA , 2012MICHAS et al 2013; In the fragment-asperity model framework the nonextensive parameter q M informs us about the scale of interactions between the fault planes and the fragments (MATCHARASHVILI et al 2011;PAPADAKIS et al 2013;TELESCA 2010b, c;VALVERDE-ESPARZA et al 2012). Thus, the increase of q M indicates that the physical state of a seismic area moves away from equilibrium.…”