A SERIES of TANGIBLE EARTHQUAKES in 2018–2019 in the FOCAL ZONE of the 10-point SPITAK EARTHQUAKE of 1988

Abstract

The paper presents the results of a study of 2018–2019 tangible seismic events with intensity at the epicenter of 5–6 points and above, that occurred in the focal zone of the 10-point Spitak earthquake of 07.12.1988 with MLH =6.8. Two earthquakes of June 6, 2018, with МL=3.6 and МL=4.3, as well as two shocks on September 10, 2019, with МL=4.7 and with МL=3.9, were felt in the nearest settlements with an intensity of 5 or more points. For three of them, according to the collected macroseismic data, isoseist maps were constructed and macroseismic parameters were determined. The strike of the nodal planes in the earthquake sources is consistent with the direction of elongation of the isoseist system, which, in turn, for three events coincides with the strike of the nearest faults of the Pambak-Sevan system.