Greece’s government has just declared a state of emergency on the island of Santorini, as earthquakes shake the island multiple times a day and sometimes only minutes apart.
The “earthquake swarm” is also affecting other nearby islands in the Aegean Sea. It began gradually with numerous very minor (less than magnitude 3) and mostly imperceptible earthquakes in late January. However, at the start of February, the seismic activity intensified as the quakes became larger and more frequent.
So far, several thousand quakes have been recorded in the last two weeks. As many as 30 a day have been above magnitude 4.0 – most of them at less than 10km depth, which is large and shallow enough to be felt by people living on local islands.
