Possible interrelation between the lead time of precursory seismic electric signals (SES) and geodynamics in Aegean Sea

Abstract

The seismicity of the last 15 years in the Aegean Sea revealed that earthquakes (<i>M</i>_w > 5) with epicentres falling within the Sporades basin and the confined area north of Samos island were preceded by electric seismic signals (SES) with a remarkably long lead time. A possible explanation of this behaviour by means of specific tectonics and geodynamics which characterise these two regions, such as a significant small crustal thickness and a high heat flow rate, has been attempted. New data seem to strengthen the above hypothesis.