There are over 13,000 active seismic stations out there, producing far more data than seismologists have time to go through.
Magma seeping into a reservoir under the island of Santorini set off thousands of quakes, some of which almost reached a 5.0 on the Richter scale.
Deep earthquakes remain one of the most puzzling phenomena in geophysics, and the phrase “mechanism that supercharges” them ...