Institute of Seismology analyses yearly over 10000 seismic events in Northern Europe. Out of all these events, between one to three percent are earthquakes and the rest are related to explosions caused by e.g. industrial activity. All events are detected and analysed automatically, while potential earthquakes are manually analysed.

The registered seismic events are published as bulletins, which include both automatically and manually analysed events. Major seismic events are also reported separately.