Natural Hazards and Earth System Science www.nat-hazards-earth-syst-sci.net 1561-8633 1684-9981 9 1 2009 10.5194/nhess-9-17-2009 http://www.nat-hazards-earth-syst-sci.net/9/17/2009/ http://www.nat-hazards-earth-syst-sci.net/9/17/2009/nhess-9-17-2009.html http://www.nat-hazards-earth-syst-sci.net/9/17/2009/nhess-9-17-2009.pdf 17 23 2009-01-07 Power law relationship between parameters of earthquakes and precursory electrical phenomena revisited E. Dologlou edologl@phys.uoa.gr Solid State Section, Department of Physics, University of Athens, Panepistimiopolis, Zografos 157 84 Athens, Greece The power law relation between the stress drop of "non thrust" earthquakes and the lead time of precursory Seismic Electric Signals (SES), obtained by Dologlou (2008a), has been tested by using additional data from the most recent earthquake that occurred on 8 June 2008, in Andravida, NW. Peloponnesus, Greece and from two other destructive earthquakes that occurred in the past in Ionian sea. A critical exponent α=0.33 is derived which is close to the one (e.g. 0.29) reported by Dologlou (2008a). The above preliminary result strengthens the hypothesis that probably signatures of criticality are present in the earthquake preparation and precursory SES processes and that both phenomena are governed by same physics. % vor jede Referenz Benetatos, C., Roumelioti, Z., Kiratzi, A., and Melis, N.: Source parameters of the $M$6.5 Skyros island (North Aegean Sea) earthquake of July 26, 2001, Ann. Geophys., 45, 513–526, 2002. Brune, J.: Tectonic stress and the spectra of seismic shear waves, J. Geophys. Res., 75, 4997–5009, 1970. Brune, J. N.: Correction, J. Geophys. Res., 76, 5002, 1971. Chouliaras, G. and Stavrakakis, G.: Seismic source parameters from a new dial-up seismological network in Greece, Pure Appl. Geophys., 150, 91–111, 1997. Dologlou, E.: Power law relationship between parameters of earthquakes and precursory electrical phenomena, Nat. Hazards Earth Syst. 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