Articles | Volume 21, issue 1
Nonlin. Processes Geophys., 21, 149–153, 2014
Nonlin. Processes Geophys., 21, 149–153, 2014

Brief communication 29 Jan 2014

Brief communication | 29 Jan 2014

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

E. Dologlou E. Dologlou
  • Solid State Section, Department of Physics, University of Athens, Panepistimiopolis, Zografou 157 84 Athens, Greece

Abstract. Here, we check the obedience of new data, derived from the Mw = 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 α =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 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.