Eruption updates & news from Stromboli:
Stromboli volcano (Eolian Islands, Italy): volcano blows giant, perfect smoke ring
Friday Mar 27, 2020 14:05 PM | BY: T
Enormous, perfect smoke ring rising from Stromboli this afternoon (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.
Detail of the steam ring (image: Barbara Engele)
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)
Links / Sources:
Links / Sources:
Thursday, Feb 27, 2020
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. ... [more]
Friday, Feb 21, 2020
The activity of the volcano has increased during the past days and is classified as "high", with very frequent and often strong strombolian explosions from several vents. ... [more]
Friday, Feb 07, 2020
The activity of the volcano continues at moderate to high levels with little changes during the past weeks. ... [more]
Stromboli volcano (Eolian Islands, Italy): activity fluctuating between high and medium levels, field report
Wednesday, Jan 01, 2020
The activity of the volcano has been fluctuating between high and medium levels. It is characterized by strombolian explosions from multiple vents in the crater terrace with averages of 22 events per hour during the past day. ... [more]
Sunday, Dec 22, 2019
The activity at the volcano has again increased during the past days and is again being characterized as at "high level". ... [more]