FEATURES OF LONG-TERM SEISMICITY VARIATIONS OF ACTIVE MEGASTRUCTURES OF THE MODERN EARTH

On the basis of comparative analysis of long - term variations in the number of earthquakes, a number of characteristic features of the seismic regime in various geodynamic settings, including the subduction, collision, riftogenesis and spreading, are established. Among them there is a coordinated synchronous or antiphase change in the number of earthquakes for the regions within a single megastructure, coordinated changes in the activity of earthquakes at different deep levels. The data obtained indicate the systemic unity of the manifestations of the earth's seismicity and allow us to use the method of comparative analysis to identify dynamically connected volumes of the lithosphere.