Abstract
Abstract. The application of new data in the power law relation between the stress drop of the earthquake and the lead time of the precursory seismic electric signal led to an exponent which falls in the range of the values of critical exponents for fracture and it is in excellent agreement with a previous one found by (Dologlou, 2012). In addition, this exponent is very close to the one reported by Varotsos and Alexopoulos (1984a), which interconnects the amplitude of the precursory seismic electric signals (SES) and the magnitude of the impending earthquake. Hence, the hypothesis that underlying dynamic processes evolving to criticality prevail in the pre-focal area when the SES is emitted is significantly supported.
Highlights
The preparation process of earthquakes is treated under the light of the new aspects of the critical point earthquake model, which predicts that failure is a co-operative effect occurring at small scale and cascading from the microscopic to the macroscopic scale (Allegre and Le Mouel, 1994; KeilisBorok, 1990)
The concept that earthquakes can be viewed as critical phenomena is supported by recent observations that rupture in heterogeneous media exhibits critical behavior (Andersen et al, 1997; Lamaignere et al, 1996; Sornette, 2000)
Seismic electric signals (SES) are low frequency (
Summary
The preparation process of earthquakes is treated under the light of the new aspects of the critical point earthquake model, which predicts that failure is a co-operative effect occurring at small scale and cascading from the microscopic to the macroscopic scale (Allegre and Le Mouel, 1994; KeilisBorok, 1990). In a series of recent articles a power law relation between dynamic parameters of earthquakes and associated precursory seismic electric signals (SES) based on progressively updated data has been reported (Dologlou, 2008, 2009, 2010, 2012). Seismic electric signals (SES) are low frequency (
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