Ⅰ. 지난 3개월 동안 전 세계에서 발생한 화산활동1. Santorini volcano (Greece): seismic unrest2011. 7. 1. GreeceThere are signs of a possible awakening of the Santorini volcano: During the past weeks, an increased number of small earthquakes has been occurring beneath and near Santorini. The quakes (most of them below magnitude 3) are concentrated beneath the center of the caldera and in a broad SW-NE zone crossing Santorini corresponding to the active volcanic trend of the island group. The Institute of Geodynamics (National Observatory, Athens) has added 4 automatic seismometers in various locations on Santorini to increase the monitoring of the volcano. It is far too early to conclude that new activity on Santorini is likely take place any time soon, but Santorini is a highly active volcano. Its last eruptions were in 1866-70, 1925-28, 1939-41, and 1950