Brief Communication: The recent seismic activity in Central Greece in 2013 and its precursory electric signals in terms of criticality

E. Dologlou
2014 Nonlinear Processes in Geophysics  
<p><strong>Abstract.</strong> Here, we check the obedience of new data, derived from the <i>M</i><sub>w</sub> = 5.4 earthquake on 7 August 2013 in Central Greece, to a previously found power law relation by the author between the stress drop of an earthquake and the lead time of its precursory seismic electric signal (SES). An exponent value &amp;alpha; =0.329 has been found which is in excellent agreement with previous ones reported in a series of articles by the author. This value falls in
more » ... s value falls in the range of critical exponents suggested by various models for fracture and is very close to a reported one which interconnects the amplitude of the SES and the magnitude of the impending earthquake. The stability of this exponent confirms the credibility of the above-mentioned power law and probably implies that real physical dynamic processes evolving to criticality are present in the pre-focal area when the SES is emitted.</p>
doi:10.5194/npg-21-149-2014 fatcat:3yutoebkuva6fb5w4ri2wmultq