Etna volcano (Italy): new paroxysm from SE crater sends tall ash plume to 9,000 m altitude
Di, 21. Sep 2021, 08:5408:54 AM | VON: T
Ash column from Etna's paroxysm this morning (image: Radio touring webcam)
Thermal image of the lava fountain from the south (image: INGV webcam)
After little more than 3 weeks of calm, the volcano has again produced a violent lava fountaining episode, known as paroxysm, from its SE crater this morning:
Current tremor signal (image: INGV Catania)
At 4.20 a.m. local time, volcanic tremor suddenly began to rise sharply. At 8.15 a.m., ash emissions were seen from the New SE crater, and strombolian explosions started a7 8.55 a.m., generating an ash plume that quickly rose to 4,500 m altitude.
This activity continued to increase, and by 9.55 a.m. resulted in lava fountaining that generated a tall column reaching approx. 9,000 m height and drifting to the ENE. At the time of this update, the activity is still going on, but seems to be reaching its end as tremor started to descend again.
As during the previous paroxysms, a lava flow is traveling from the southern rim of the crater towards the SW.
Etna volcano (Italy): after 3 weeks of calm, another lava fountaining phase is in the making tonight
So, 29. Aug 2021, 15:4915:49 PM | VON: T
Strombolian eruption from the New SE crater of Etna (image: LAVE webcam)
After being mostly calm for about 3 weeks since the violent SE crater paroxysm (or lava fountaining episode) on 9 August this year, the volcano seems to be keen to produce this fiery show of lava fountains once again before the month is over:
Current tremor signal (image: INGV Catania)
Already yesterday, fluctuating tremor heralded some sort of instability in the supply system, although no significant eruptive activity at the craters itself could be noted. Today, the tremor began to rise steeply at 3pm, followed by the resumption of intermittent strombolian activity at the New SE crater.
So far, all looks as if very soon a lava fountaining phase should occur if the volcano follows the pattern of the more than 50 such previous phases during this year. In fact, at the time of finishing this update, the activity already has increased! The next hours will be interesting to follow the volcano live.
Small pyroclastic flow during small landslide on east flank of SE crater
Update Mon 09 Aug 2021 14:26
At 7.41 am local time, an avalanche of brown ash could be seen originating from a point on the lower east flank of the New SE crater and descending several 100 meters towards the Valle del Bove.
Small pyroclastic flow from the lower eastern SE crater flank (image: Pippo Scarpinati via Alessandro Corsaro / facebook)
While it looks as if a new vent opened, according to INGV Catania, it was a small landslide from the eastern flank of the SE crater and only involved cold material, without involving a new vent (which would have shown as hot thermal signals).
Etna volcano (Italy): lava fountains and loud explosions wake up residents
Mo, 9. Aug 2021, 07:1907:19 AM | VON: T
Lava fountain at Etna this morning (image: Franca Fulle)
Images of the paroxysm by Francesco Tomarchio (Image: Francesco Tomarchio / facebook)
After little more than a week, another lava fountaining episode or paroxysm occurred from the New SE crater early this morning.
Current tremor signal showing the peak of this morning's paroxysm (image: INGV Catania)
After a brief episode of ash emissions from the NE crater on 4 August, the volcano continued to be calm until yesterday, when first signs of a reawakening appeared in form of intermittent strombolian explosions at the New SE crater, along with fluctuating tremor with peaks reaching moderate values.
This activity gradually picked up late at night and peaked after midnight and reached lava fountaining in the early hours around 3 am local time. Again, a tall eruption column rose several kilometers from the summit of Etna and spread into a plume that drifted east. At least two lava flows were produced as well: one towards the SW "as usual", another one down the SE flank into the upper Valle del Bove.
The lava fountains might not have reached the same intensity as during the exceptionally violent preceding 31 July-1 Aug paroxysm, but the volcano greeted people living around the mountain with a series of particularly strong explosions of large bursting lava bubbles from the crater that generated shock waves that rattled windows and doors in more than 15 distance and kept many people awake to watch the mesmerizing show from the volcano.
As long as these paroxysmal eruptions, or eruptive phases, now the 53rd in a row since February this year, continue from the New SE crater in the summit area, they pose no danger to the surroundings, only great annoyance with the frequent ash and lapilli fall deposits in varying sectors, but most frequently the eastern ones affected where people almost constantly need to clean roofs and surfaces including roads from the black volcanic ash.
Impressive SO2 plume from latest paroxysm drifting over Ionian Sea and Greece
Update Mon 02 Aug 2021 04:35
The SO2 aerosol plume from the volcano's latest paroxysm during the night Saturday-Sunday can be traced drifting over the Ionian Sea and Greece now, extending more than 430 km east.
SO2 plume from Etna's 31 Jul-1 Aug eruption seen on Sentinel-2 satellite data (image: @DlrSo2/twitter):
Note that the automatic association of "Stromboli" as the volcano culprit in the image attached is wrong; the plume is from Mt Etna - the system tries to match the closest active volcano, which is usually, but like here not always the source of the emission.