SEISMICITY OF THE TERRITORY OF THE EASTERNCAUCASUS FOR THE PERIOD 1960-2006

Abstract

In work the analysis of spatial-temporal distribution of seismicity the territory of the Eastern Caucasus in two different directories, the Dagestan branch of the geophysical service RAS and Northern Eurasia. For the ob- servation period from 1960 to 2006. the maximum concentration of epicenters of earthquakes are concentrated within a radius of 40 km from the centre coordinates 43,00° Lat. and 47,00° Lon. The temporal distribution of earthquakes shows that bursts of seismic activity coincide with periods of: 1) a strong earthquake of magnitude6,6 in 1970; 2) completion of Chirkei reservoir in 1974; 3) an earthquake of magnitude of 5,7 in 1999 Set that the number and accuracy of determining the parameters of earthquake sources directory of the Dagestan branch of the geophysical service of the RAS is superior to the catalogue of Northern Eurasia, thereby allows to explore a concentrated and scattered components of seismicity.