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In 2015, the network of Azerbaijan seismic stations included 35 digital stations, which continued to operate unchanged. The set of parameters determined for estimating the earthquake magnitude has decreased – determination of the MPVA magnitude and КР energy class has ceased. Only the local magnitude MLАзр was measured. The total number of earthquakes recorded by the Azerbaijan network of stations in 2015 amounted to 6419, however, only 128 of them with MLАзр3.0 are given in the catalogue of earthquakes of Azerbaijan published in the Appendix to this article. Seismic activity in the study area remained unchanged. The released seismic energy changed insignificantly compared to its value in 2014 and was close to the background level for the period 1993–2014. The increase in the number of earthquakes of the representative level (K≥8.6, MLАзр≥2.8) in comparison with the long-term average annual value is due to aftershocks of earthquakes on January 26 with MLАзр=4.9, June 3 with MLАзр=4.6, and September 4 with MLАзр=5.9. The 2015 most significant seismic event on the territory of the Republic was the earthquake on September 4 with MLАзр=5.9 and seismic intensity at the epicenter of I0=7.

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No abstract

In 2016–2017, the network of Azerbaijan seismic stations included 35 digital stations, which continued to operate unchanged. The set of parameters determined for assessing the earthquake magnitude was the same as in 2015. The local magnitude MLАзр was determined only. The total number of earthquakes recorded by the Azerbaijan network of stations amounted to 6044 in 2016 and 6094 in 2017. However, only 128 of them with MLAzr3.0 are given in the catalogue of earthquakes of Azerbaijan published in the Electronic supplement to this article. Seismic activity in the study area remained unchanged. The number of earthquakes of a representative level (K≥9) compared to their number in 2015, as well as the released seismic energy changed insignificantly. In 2016 the most significant seismic event on the territory of the Republic was the earthquake of August 1 with MLAzr=5.6 and intensity at the epicenter I0=5, and in 2017 – of November 15 with MLAzr=5.7 and seismic intensity at the epicenter I0=7.