Etna volcano (Italy): new paroxysm from SE crater
Mon, 21 Dec 2020, 12:2412:24 PM | BY: T
The eruption column of Etna volcano this morning (image: Andrea Pulvirenti / facebook)
Intense strombolian activity from the New SE crater last night (image: INGV webcam)
Another lava-fountaining episode (paroxysm) occurred this morning at the volcano.
Tremor signal showing the steep peak of activity earlier today (image: INGV)
Visibility of the new eruptive phase was very limited due to dense clouds, but some observers could catch glimpses of the lava fountain and ash column that rose several kilometers. It appears that the new paroxysm was shorter but stronger than the previous paroxysm on 13-14 Dec.
A sharp peak in tremor accompanied the event, which seems to have lasted less than two hours, as typical for Etna's paroxysms. Preceding the eruption today, the New SE crater had been showing intense strombolian activity in the past few days, with increasing tendency during the last night.
Given two paroxysms in just over a week and Etna's tendency to produce such events in series at roughly regular intervals during certain phases (such as in 2000 or 2011-13), it could be a beginning of a new series of paroxysms in the coming days, weeks or months.
Links / Sources:
Links / Sources:
Mon, 21 Dec 2020, 10:00
Etna Volcano Volcanic Ash Advisory: ERUPTION AT 20201221/0909Z STRONG EXPLOSIVE ACTIVITY OBS VA DTG: 21/0940Z
Wed, 16 Dec 2020, 06:00
Etna volcano (Sicily, Italy) - Smithsonian / USGS Weekly Volcanic Activity Report for 16 December-22 December 2020 (Continuing Activity)
INGV reported that strong activity at Etna's Southeast Crater (SEC) included fountaining and lava flows on 21 December. Tremor amplitude had gradually increased on 20 December but weather conditions prevented visual observations. During the morning of the 21st Strombolian activity occurred at three vents. ... Read all