Some relationship between VAN seismic electric signals (SES) and earthquake parameters

Temporal dependence of the selectivity property of SES stations in western Greece

“…10 both (NOA and USGS) epicentres have the same longitude. Thus, the cause of the difference in source mechanism before and after 1987 in the broad area, seems to be related to the epicentre location and not to a temporal change as mentioned in a previous paper by Uyeda et al (1999).…”

“…Thus, all precursory SES of earthquakes that occurred in Western Greece have been detected at the stations lying west of Hellenides, namely IOA, PIR and PAT. Relationships between earthquake parameters and associated precursory SES properties have been reported in various articles (e.g., Uyeda et al, 1999;Dologlou, 2008a, b). Dologlou (2008b) examined whether a SES station showed any preference at predicting earthquakes of a specific focal mechanism ( strike -slip, normal or thrust type) by using large earthquakes (M>5) and precursory SES for the period 1995-2007, in western Greece and compared with the results for 1983-1994 (Uyeda et al, 1999).…”

“…Relationships between earthquake parameters and associated precursory SES properties have been reported in various articles (e.g., Uyeda et al, 1999;Dologlou, 2008a, b). Dologlou (2008b) examined whether a SES station showed any preference at predicting earthquakes of a specific focal mechanism ( strike -slip, normal or thrust type) by using large earthquakes (M>5) and precursory SES for the period 1995-2007, in western Greece and compared with the results for 1983-1994 (Uyeda et al, 1999). Furthermore, the operation of the VAN network for almost three decades showed that the detection ability of those stations switched in time from PIR to IOA and vice versa (Uyeda et al, 1999;Dologlou, 2008b and references therein).…”

“…Dologlou (2008b) examined whether a SES station showed any preference at predicting earthquakes of a specific focal mechanism ( strike -slip, normal or thrust type) by using large earthquakes (M>5) and precursory SES for the period 1995-2007, in western Greece and compared with the results for 1983-1994 (Uyeda et al, 1999). Furthermore, the operation of the VAN network for almost three decades showed that the detection ability of those stations switched in time from PIR to IOA and vice versa (Uyeda et al, 1999;Dologlou, 2008b and references therein). In another paper Dologlou (2008a) a possible existence of a correlation between the stress drop of an earthquake and the lead time (which is the time difference between the detection of SES and the occurrence of the impending earthquake) of the associated SES was investigated.…”

Entropy in Natural Time and the Associated Complexity Measures

“…They are recorded at certain sites of the Earth's surface (sensitive sites) by using a multitude of measuring dipoles [33]. SES exhibit the so-called selectivity phenomenon according to which SES related with earthquakes of a given earthquake mechanism from a given seismic area are recorded only at given sensitive site(s) [33,35,[46][47][48][49][50]. This enables the determination of the epicentral area based on the sensitive site that has recorded the SES.…”