AZERBAIJAN

Abstract

In 2014, a network of 35 digital seismic stations of Azerbaijan continued to operate unchanged, while significant changes occurred in the work of analog stations – they were completely stopped in May 2014. The set of parameters determined for estimation of the earthquake magnitude decreased – determination of MPVA magnitude and KP energy class ceased. Only the local magnitude ML Azr is measured, which is converted then into energy class K. The total number of earthquakes recorded by Azerbaijan network of seismic stations amounted to 5754, but the Azerbaijan earthquake catalog published in the Appendix to this article contains 135 of them with ML Azr3.0 only. An increase in seismic activity in the study area was noted. This is expressed in increase in 2014 of number of representative earthquakes (K≥9) compared with both their number in 2013 and the average annual value for 1993–2013. The seismic energy released in 2014, after its reduced values in 2013, approached the background level. In 2014, the most significant seismic event on the territory of the Republic was the February 10 earthquake with ML Azr=5.7 and intensity in the epicenter of I0=6.