Explosive activity at Etna Voragine on 7 november 2015 - by Etna Walk
Small changes in the summit activity at Etna
Since the second half of October 2015, the INGV observed a return of the magmatic activity in the crater of Voragine; it results in explosions, some of which are accompanied by small ash emissions, the height above the crater rim.
"Significant" degassing marks the northeast crater and the new South East Crater; numerous fumaroles are noticed in the crater depression and on the southern and eastern flanks of the cone.
On 8 November at 0:13 GMT, a small explosion signal was recorded at NSEC, which was accompanied by a plume of gas rising to 300 meters high, before the degassing decreases.
Source: INGV Catania
Etna NSEC - explosion seen by the webcam at 0:13 ET 0:15 respectively GMT - Doc. INGV Catania - a clic to enlarge.
In Ecuador, the activity remains at a moderate internal and low superficial level in Cotopaxi. This November 8, cameras show emission og gas and steam lightly loaded with ash, not more than 500 meters above the crater. During the night, bright spots were observed in the upper part of the crater, not representative of danger following the observatory, which maintains the yellow alert level.
The activity of the Tungurahua is still described as high.
This November 7 in the evening, steam and gas plume rising 200 meters above the crater, before dispersing to the northeast, and glow is seen in the crater. Seismicity is characterized by 20 earthquakes LP, 17 VT earthquakes and 1 earthquake exploision-related. At the publication of the report of 8 November, the volcano remains in the clouds.