Abstract
Seismic electric signals (SES) preceding strong earthquakes (EQ) are reliable recorded and separated by VAN group on special station network in Greece. Traditional commonly accepted idea that original cause of EQ and all its precursors is the stress accumulation in focal zone meets difficulties in explanation of SES features: long distance appearance, selectivity, lack of reversibility, alternation. Recently proposed (Guterman & Khazan, 1994) magmatic mechanism of shallow crustal EQ preparation allows to construct the model for explanation of most enigmatic SES features. Basic model consists of mantle chamber, the central crustal magma chamber and magma channel connecting mantle and crustal chambers. Basic model can be supplemented by set of secondary crustal chambers with their magma channels spreading quasiradially from centre. Data of geology on giant radiating dike swarms confirm plausibility of the model.
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