After the intense eruptive activity during the first ten days of December 2015 at the Voragine, Bocca Nuova and the New Southeast Crater (NSEC), for a few days the main focus of the activity shifted to the Northeast Crater (NEC). During the night of 9-10 December, there were several episodes of modest Strombolian activity from the latter crater, and a few incandescent bombs fell onto the outer flank of its cone; this activity also generated abundant ash emissions. The ash emissions from the NEC gradually diiminished over the next few days. On the late afternoon of 13 December, a series of ash emissions started from the NSEC, which ended a few hours later; finally, the Voragine produced two brief ash emissions on 18 December. From the afternoon of 18 December until the morning of 28 December, no eruptive activity occurred at Etna.
A new series of ash emissions started at 10:00 UTC (=local time -1) on 28 December from the eruptive vent located high on the eastern flank of the NSEC cone (see image at left, recorded by the visual surveillance camera on the Montagnola, EMOV). These emissions continued intermittently until the afternoon and then ceased, but during the following days, very minor, and sporadic, explosive activity continued at the same vent on the east flank of the NSEC cone.
January 03, 2016. Etna , Sicily :
Source : INGV.
Photos : INGV, Turi Caggegi ( 12/2015 ).