Analysis of distribution of earthquakes in Vrancha area during the 11–years cycle of solar activity

2008;
89-95
1
Carpathian Branch of the Institute of Geophysics named after. SI. Subbotin NAS of Ukraine
2
Department of seismicity of the Carpathian region of the Institute of Geophysics them SI. Subbotin NAS of Ukraine;Institute of Geophysics National Academy of sciences of Ukraine
3
Carpathian Branch of the Institute of Geophysics named after. SI. Subbotin NAS of Ukraine

 

Peculiarities of distribution of earthquakes quantity and total emitted seismic energy of Vrancha focal zone 3 deep layers (1 – up to 40 km, 2 – 70–140 km, 3 – > 140 km) during 11-years Solar activity cycle (SA) in two temporal ranges 1701–2006 yrs., 1928–2006 yrs. were examined. It was determined, that two maximums of earthquakes quantity distribution and total emitted seismic energy on cyclic curves were fixed. This maximum coincides with maximum increasing (before max SA) and maximum decreasing (after max SA) of Solar activity during 11-years cycle. Possibly, “the trigger” is not the value of SA itself, but its intensive variations during 11-year cycle, which can influence as a trigger upon unstable balance of seismic source in the final stage of seismic energy accumulation.
 

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