Stromboli volcano - very strong activity September 2011

In August and early September 2011, Stromboli's activity was at unusually strong levels. Powerful explosions from the NE vent often sent bombs to more than 500m high, reaching Pizzo and the Bastimento viewing areas (which remained closed most of the time). Small intracrater lava flows were observed in this period as well.
A powerful explosion of a large magma bubble shoots out of the NE crater. (Photo: Tom Pfeiffer)
A powerful explosion of a large magma bubble shoots out of the NE crater. (Photo: Tom Pfeiffer) [info]
(9051 Éxitos)
A dark ash cloud rises while liquid bombs are flying in all directions. (Photo: Tom Pfeiffer)
A dark ash cloud rises while liquid bombs are flying in all directions. (Photo: Tom Pfeiffer) [info]
(2926 Éxitos)
The ash plume from the eruption rises vertically while glowing bombs rain down onto the NE crater's outer flank. (Photo: Tom Pfeiffer)
The ash plume from the eruption rises vertically while glowing bombs rain down onto the NE crater's ... [info]
(1985 Éxitos)
As it gets dark, the explosions of liquid magma from Stromboli's NE crater become very impressive. (Photo: Tom Pfeiffer)
As it gets dark, the explosions of liquid magma from Stromboli's NE crater become very impressive. (... [info]
(5465 Éxitos)
Exploding lava in the twilight. The eruptions are accompanied by loud detonations. (Photo: Tom Pfeiffer)
Exploding lava in the twilight. The eruptions are accompanied by loud detonations. (Photo: Tom Pfeif... [info]
(5229 Éxitos)
Glowing bombs rain down onto the SE crater's flank. (Photo: Tom Pfeiffer)
Glowing bombs rain down onto the SE crater's flank. (Photo: Tom Pfeiffer) [info]
(3237 Éxitos)
The crater's flanks are covered by glowing bombs after the explosion is over. We observed an eruption almost exactly every 15-20 minutes. (Photo: Tom Pfeiffer)
The crater's flanks are covered by glowing bombs after the explosion is over. We observed an eruptio... [info]
(1242 Éxitos)
An eruption sends bombs towards Pizzo, while the last twilight illuminates the horizon. (Photo: Tom Pfeiffer)
An eruption sends bombs towards Pizzo, while the last twilight illuminates the horizon. (Photo: Tom ... [info]
(2130 Éxitos)
The Sciara del Fuoco with the trails of glowing bombs from the previous eruption. At the crater terrace, the NW vent (to the right) is constantly ejecting strombolian bursts of lava to up to 100-150 m high. (Photo: Tom Pfeiffer)
The Sciara del Fuoco with the trails of glowing bombs from the previous eruption. At the crater terr... [info]
(1788 Éxitos)
A very powerful eruption showers the whole crater with bombs, and probably reaches the Pizzo as well. The heavy bombardment results in glowing rockfalls lasting for more than a minute on the Sciara del Fuoco, with many bombs reaching the sea. (Photo: Tom Pfeiffer)
A very powerful eruption showers the whole crater with bombs, and probably reaches the Pizzo as well... [info]
(3672 Éxitos)
Another extremely strong eruption sends bombs more than 500m, many towards the Bastimento and Pizzo and beyond. The outer slopes of the NE crater are completely covered with incandescent lava bombs. (Photo: Tom Pfeiffer)
Another extremely strong eruption sends bombs more than 500m, many towards the Bastimento and Pizzo ... [info]
(8413 Éxitos)
Trails of glowing bombs rolling down the Sciara del Fuoco after a strong explosion from the NE crater. (Photo: Tom Pfeiffer)
Trails of glowing bombs rolling down the Sciara del Fuoco after a strong explosion from the NE crate... [info]
(1121 Éxitos)
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