Etna volcano updates and eruption news:
Etna volcano (Italy): new paroxysm (nr 9) on 5-6 August 2011
vr, 5 aug 2011, 21:3221:32 PM |
A new paroxysm (nr 9 in 2011) from the "New SE crater" of Etna is occurring at the time of writing. Following a brief period of intermittent weak explosions starting mid-day today, strombolian activity started to increase sharply the evening of 5 August; activity has now reached near continuous low lava fountaining and is likely to increase in the next hour(s). A lava flow has started to descend into the Valle del Bove. Our team member Marco Fulle is on location documenting this spectacular event.
Seismic recording showing the paroxysm (INGV Catania; for local time add 2 hours)
The eruption was somewhat smaller in size than the previous paroxysms. Its main phase lasted from 22h00 to ca. 1 am on 7 August when activity dropped sharply again.
The big question is what will come next! Possibly, more paroxsysms (in 2000, a similar series of 66(!) paroxysms occurred from the SE crater), the next one perhaps again in ca. 6 days... Or, a new flank eruption hat finally allows the huge magma storage inside Etna to drain effectively. Or, simply nothing for a while. Volcanoes are unpredictable.
Sun, 31 Jul 2011, 14:18
The 8th paroxysm in 2011 from the new SE crater of Etna occurred in the evening of 30 July 2011. Spectacular continuous lava fountains rose to more than 500 m between 9.30pm and 11pm. The paroxysm followed a gradual build-up of strombolian activity during the previous days. Large lava flows forming a broad sheet descended into the Valle del Bove and reached more than 2 km length.. ... Lees alle
Mon, 25 Jul 2011, 16:41
Another powerful paroxysm occurred early today at Etna volcano from the new SE crater, making this episode Nr 7 of this kind in 2011, almost exactly 6 days after the last eruption on 19 July. It seems that the intervals between single paroxysms are becoming shorter. ... Lees alle
Tue, 19 Jul 2011, 06:21
A new powerful paroxysm occurred on Etna volcano from the SE crater during the second half of the night 18-19 July. Tom who was guiding a group of VolcanoDiscovery were able to witness the eruption: during the afternoon of 18 July, we visited the area around the new cone at the SE flank of the SE crater (now often called the "New SE crater", or the former "pit") and noticed many radial fractures in the ground SE of the cone, but only weak ash emissions suggesting that magma had dropped deep within the conduit. Around midnight, we noticed that strombolian activity had resumed around midnight and tremor was rapidly rising, and decided to walk to a viewpoint on the rim of the Valle del Bove, where we arrived at around 2:30am. At that time, strombolian activity had apparently just turned into fountaining (other observers who had been on the spot half an hour earlier did only report strombolian activity and thought it was decreasing...). The fountains quickly increased to ca. 500 m height, and a lava flow had started to advance a few 100 meters. At the peak of the eruption at around 3am, the fountains pulsated between an estimated 500-800 m height, with large incandescent bombs visible more than 1 km above the vent and landing behind SE crater. The lava flow advanced with 3 main branches onto the steeper parts of the wall of the Valle del Bove. The fountain-fed ash plume drifted east towards Giarre. ... Lees alle
Sat, 9 Jul 2011, 23:35
A powerful paroxysm occurred at the vent SE of the SE crater of Etna volcano during the afternoon of July 9, 2011, and was observed close-up by Tom Pfeiffer. The eruption started with approximately 8 hours of slowly increasing strombolian activity, accompanied by increasing tremor since the morning of 9 July. Towards 14h30 h local time, the intensity rapidly increased into high lava fountaining lasting for ca. 1.5-2 hrs, generating a tall tephra column and producing heavy ash fall S-SE of the summit area. The eruption waned at around 17h00 and stopped around 18h00. A large lava flow with several branches went down into the Valle del Bove. ... Lees alle
Sat, 9 Jul 2011, 14:28
You can watch the developing activity on Etna volcano over the last two hours. Increasing seismic activity and ash eruptions to Strombolian eruptions... Tom Pfeiffer is still near the eruption. ... Lees alle