Abstract
The article provides instrumental data and descriptions of macroseismic manifestations of six perceptible earthquakes that occurred on the territory of Dagestan in 2016 (Mekhelta on May 13 with KR=13.5, Ms=5.3, I0=5, Arakan on August 24 with KR=10.1, Ms =3.4, I0=4, Botlikh on November 2 with KR=9.3, Ms=3.2, I0=4, Kizilyurt-II on December 22 with KR=10.3, Ms=3.5, I0=4–5) and in 2017 (Tsurib on May 3 with KR=13.6, Ms=5.3, I0=6 and Lyakhlya on December 7 with KR=12, Ms=4.4, I0=5–6). For each of the considered earthquakes, except for the Tsurib one, isoseismal maps were compiled. All earthquakes, except for the Arakan one, are located along the seismically active ring around the calm zone. The Arakan earthquake, together with the Kichigamra-I and Kichigamra-II earthquakes on May 3, 1988, and April 3, 2013, breaks the long-term seismic calm in this zone, there-by confirming that similar seismic events can take place here in the medium term. It should be noted that the 2016 Botlikh earthquake is the only event of such magnitude within the Botlikh area for the entire instrumental observation period (since 1975). The Kizilyurt-II earthquake, despite its low mag-nitude, is of interest due to the wide-area where shakes were felt, and, together with the strong 1999 Kizilyurt-I earthquake with Ms=5.3, due to proximity to the Chiryurt hydroelectric power station.
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