Natural Hazards and Earth System Science
www.nat-hazards-earth-syst-sci.net
1561-8633
1684-9981
8
1
2008
10.5194/nhess-8-123-2008
http://www.nat-hazards-earth-syst-sci.net/8/123/2008/
http://www.nat-hazards-earth-syst-sci.net/8/123/2008/nhess-8-123-2008.html
http://www.nat-hazards-earth-syst-sci.net/8/123/2008/nhess-8-123-2008.pdf
123
128
2008-02-25
Electrical precursors of earthquakes in Aegean Sea during the last decade (1997–2007)
E. Dologlou
edologl@phys.uoa.gr
V. Hadjicontis
C. Mavromatou
Solid State Section, Department of Physics, University of Athens, Panepistimiopolis, Zografos 157 84 Athens, Greece
The purpose of this study is to investigate some properties of the Seismic
Electric Signals (SES) that preceded large earthquakes which occurred in the
Aegean Sea (24–27)° E, (37–40)° N, during the last decade.
Our main interest is focused on the important parameter of the lead time
Δ<I>t</I>, which is the time difference between the occurrence of the
earthquake and the detection of the associated SES signal. Two groups of
lead times, a short (i.e. Δ<I>t</I>~ some weeks) and a long one
(Δ<I>t</I>~ some months) have been observed. We examine whether this
difference could be related to the regional tectonics. Furthermore the
property of SES selectivity is discussed.
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