Stromboli volcano (Eolian Islands, Italy): volcano blows giant, perfect smoke ring

Fri, 27 Mar 2020, 14:05
14:05 PM | BY: T
Enormous, perfect smoke ring rising from Stromboli this afternoon (image: Barbara Engele)
Enormous, perfect smoke ring rising from Stromboli this afternoon (image: Barbara Engele)
Detail of the steam ring (image: Barbara Engele)
Detail of the steam ring (image: Barbara Engele)
Minutes ago, the volcano produced a spectacular "smoke ring", which was seen rising from the crater area and drifting slowly northeastwards over the village.
Its near-perfect circular shape and large diameter (100-200 m?) are truly impressive, perhaps the largest I have ever seen or heard of.
Such ring vortexes are rare, but not unknown on Stromboli and other volcanoes; they can form when strong gas pulses leave a vent with perfect circular diameter, creating regular eddies in the shape of a ring.
Apart from this beautiful phenomenon, Stromboli volcano's activity has been at more or less stable, moderate levels during the past weeks.
It is being dominated by scoria-rich strombolian explosions reaching very high pressure (4 bar) at the NE crater sector, and less frequent eruptions from other vents. The frequency of strombolian explosions has been ranging between 10-15 events per hour, LGS reported:
"Tremor amplitude was stable at medium level. Thermal activity was medium and no thermal anomaly was recorded by MODIS images. This parameter was largely affected by the cloudy conditions of the last 24h. Early measures of SO2 flux, based on a few data, showed low degassing level.
In the last 24h, the CO2 flux measured is of 658 t/d corresponding to medium level. The number of rockfalls is showing medium level (9 events/day). The level of the volcanic activity is medium." (LGS)

Previous news

Thu, 27 Feb 2020, 17:39
Weak eruption from Stromboli this evening (image: INGV Catania webcam)
The activity of the volcano has dropped during the past 2 days, at least judging from the frequency and intensity of strombolian explosions, which were much lower than during most of the previous months. ... Read all
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