Significant emissions of ash from the Northeast Crater, are emitted from the summit of Mount Etna. But it seems that now it is just a residual activity. It is possible that magma « retreat » in depth and that the volcano crumbling. This would be the reason of tremors that have arisen in recent days. If everything goes well, in time, we could see a cessation of the eruptive activity and a period of truce, at least until the magma begins again to recharge.
Update INGV Etna, December 09, 2015. 17h50
Eruptive activity is continuing at Etna with emission of grayish-brown ash from the Northeast Crater, which forms a plume trailing southeast (see the photo at left, by Boris Behncke of the INGV-Osservatorio Etneo, taken on the morning of 9 December 2015). These emissions, however, are not associated with any Strobolian activity or lava fountaining revealed by the visual and thermal observation systems. The pyroclastic material is blown by the wind toward the coast of the Ionian Sea.
The frequency and magnitude of events related to the seismic swarm on the northeast flank of Etna is currently diminishing significantly. This earthquake swarm is to be seen in a dynamic context characterized by pronounced deflation of the volcano as a consequence of the subtraction of a significant volume of magma, and represents the response of the tectonic structures in the eastern flank sector of the volcanic edifice.
December 10 , 2015. Etna, Sicile :
Source : Gio Giusa. INGV .
Photo : Salvatore Lo Giudice