Fidest – Agenzia giornalistica/press agency

Quotidiano di informazione – Anno 34 n° 151

Earthquakes in Italy, over 16 thousand recorded in 2021

Posted by fidest press agency su domenica, 16 gennaio 2022

16,095 are the earthquakes in Italy and in neighboring areas located by the National Seismic Network in 2021: an average of 44 earthquakes per day, or on average one event every half hour. “The trend of the last three years was also confirmed in 2021, with the strongest earthquakes located outside the Italian territory”, says Alessandro Amato, INGV seismologist. “As can be seen from the map published on INGVterremoti, the seismic events that recorded a magnitude equal to or greater than 5.0 took place in Algeria, Croatia and the Adriatic Sea, even if some of them had a resentment also in the Italian territory”. The number of earthquakes located in Italy in 2021 is slightly lower than in 2020 and has remained stable since 2019. Numbers lower than those recorded in the years 2016-2017-2018 characterized by the seismic sequence in central Italy. The contribution of this sequence that began on 24 August 2016, in terms of the number of events, is however important also in 2021, representing about 30% of the total seismicity in Italy. “The first Italian earthquake of 2021 occurred in the Modena area, in Pavullo nel Frignano, 1 hour and 3 minutes after the start of the new year. The last one, however, we located in Sefro, in the province of Macerata, less than half an hour from midnight: both recorded a magnitude of less than 2.5” explains Maurizio Pignone, geologist at INGV. “Sardinia is confirmed as the region with the lowest number of earthquakes, while Sicily has had over 80 events with a magnitude of 2.5 or greater, more than all other regions. However, if we also counted very small earthquakes, the primacy would be conditioned by the density of the seismic network and Marche and Umbria would ‘win’ with approximately 3,000 and 5,000 events respectively”.The strongest earthquake occurred in Sicily, near Motta Sant’Anastasia (CT), on 23 December 2021, within a seismic swarm with over 50 events within three days and was characterized by a magnitude 4.3. The smallest, however, was recorded near Gubbio (PG) on 13 August 2021 with a magnitude which, in this case, was 0.0, located by the National Seismic Network in an area of Italy where the sensitivity of the network is maximum. The earthquakes of 2021 are “navigable” with the interactive map and with a “dashboard” story map created by the INGVterremoti Team.

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