Etna volcano update: Etna quiet again after ash-rich eruptive phase
mer., 15 déc. 2021, 17:5217:52 PM | AUTEUR : T
Strombolian activity at Etna's New SE crater last night (image: Giuseppe Distefano / Marco Restivo / Etna Walk / facebook)
The activity from the New SE crater yesterday did not develop into a lava fountaining phase such as the many paroxysms observed during this year, although it shared many characteristics of it.
Current tremor amplitude EMFS station (image: INGV Catania)
Rather than sustained fountains with significant amounts of liquid lava bombs, it produced mostly a dense ash column that rose up to 6-7 km altitude (much less than during most paroxysms).
Only little glowing material could be seen in the eruption column. Activity waned at around 5 pm., then picked up again during the evening, to continue with less intensity and mild strombolian eruptions during much of the night. It gradually decreased in the early morning hours and seems to have stopped by now.
The small lava flow that had been erupted in the Valle del Bove during the day before yesterday and yesterday has also stopped.
Etna is again calm, but for how long nobody knows...
Some images of yesterday's activity from Etna Walk:
mer., 15 déc. 2021, 06:42
INGV reported that during 6-12 December activity at Etna was characterized by gas emissions from all summit craters and ash emissions from Southeast Crater (SEC); weather conditions prevented views during most of the week. During 6-7 December Strombolian activity at SEC produced almost continuous ash emissions that dispersed ENE. On 8 December the ash emissions were diffuse and discontinuous, and dissipated near the summit. ... Read all
mer., 15 déc. 2021, 03:00
Etna Volcano Volcanic Ash Advisory: ERUPTION AT 20211214/1115Z ONGOING ERUPTION OBS VA DTG: 15/0300Z to 10000 ft (3000 m)