Analysis of seismic activity in the area of the Sulak cascade HPP

Abstract

Conducted a detailed study of seismicity of the territory of Dagestan over the past 50 years showed a maximum concentration of seismic activity in the area Sulak cascade that occurs during filling of reservoirs each large hydro. It is shown, for example Irganaysk HPP that additional increase (in comparison with the period of relative tectonic equilibrium) dynamic load initiates the burst of seismic activity in the area, changes the nature of the distribution of hypocenters. After a burst of seismic activity there is a period of relative seismic calm of the area, in other words triggered seismicity leads to a temporary reduction of the total local seismicity.