The Volcano Adventure Guide: Excellent information and background for anyone wishing to visit active volcanoes safely and enjoyably. The book presents guidelines to visiting 42 different volcanoes around the world.
Climbing Stromboli volcano: Stromboli provides one of the most remarkable opportunities to watch volcanic eruptions from close: a natural ridge located 150 m above the active vents. A classic and all-time favorite tour by anyone interested in seeing active volcanoes!
Stromboli, a small island north of Sicily, is one of the most active volcanoes in the world and famous for its normally small, but regular explosions throwing out glowing lava from several vents inside its summit crater. This activity has been going on for at least 2000 years, as long as there is written memory of the activity, which Stromboli lended its name to, the so-called strombolian activity.
Thermal image of the crater area of Stromboli (INGV)
The strength of explosion signals and tremor seem to have increased this morning. A small lava out-spill of lava from the northern breached rim of the NE crater as well as dust trails from numerous blocks rolling down the Sciara can be seen on the webcams.
Webcam image of Stromboli (INGV)
Current seismic signal from Stromboli (ST8 station, INGV)
Activity has been lower today, but for most of the day, visibility has been bad. The lava flow on the upper part of the Sciara del Fuoco remained active with one branch still flowing, but decreased to about half its size and length of yesterday. ...more
Explosions of large fluid lava bubbles from the NE vent still occur at intervals of 15-30 minutes.
Lava flow and dust from rockfalls on Sciara del Fuoco
The new lava flow on the upper Sciara del Fuoco this evening
Another collapse of parts of the northern crater rim occurred today around 14:30 local time. Lava continued to issue from the NE cone and forms a lava flow with currently 3 branches, one of which reaches about 400 m elevation. Glowing rockfalls reach the sea. ...more
During the afternoon, small pyroclastic flows generated by material sliding down the Sciara could be seen. Strong explosive eruptions from the main NE vent continue to occur at intervals of 30 minutes approximately. [less]
Thermal webcam image of the crater area showing a large overflow (INGV)
A significant change seems to have occurred over night. Tremor is lower and almost back to normal levels, and explosions have been notably weaker. As seen on the thermal (and visual) webcam, a larger lava overflow has started and is continuing at the moment.
Incandescent rockfall from the lava flow on the evening of 13 Jan
Last night, the effusive vents at the northern partially breached rim of the NE cone were weakly active, feeding a flow of a few tens of meters length which generated frequent incandescent avalanches reaching the sea. ...more
The NE cone continues to produce powerful explosions of liquid lava at intervals of 10-30 minutes, and sometimes boiling lava could be seen inside. The hornito adjacent to the cone showed no continuous spattering, but frequent strombolian eruptions. Also, the NW vents with typical strombolian eruptions were more frequently active than during the past days. [less]
The large event around noon today was a large explosion coupled with the collapse of part of the northern outer crater wall of the NE crater. The explosion combined with the resulting large rockfall of hot material sliding down the Sciara del Fuoco into the sea produced a huge ash and steam plume, which scared many in the village (including us). When we visited the Sciara del Fuoco in the afternoon, a small lava flow was actively issuing from the effusive vent (that had been active intermittently during the previous days) located just beneath the new crater breach. The flow was about 10 meters wide and had previously reached about 150 m length where a cooling flow front was still visible. During the afternoon / evening, the flow continued to be quite active, producing many incandescent avalanches of blocks tumbling down the Sciara. Ash whirled up by detaching lava sometimes resembling small pyroclastic flows.
Active new lava flow from the effusive vent on the N side of the NE crater cone; the new breach is visible to the left of the vent
Another short-lived lava overflow occurred this night from the northern vent under the rim of the NE crater complex, as could be seen on webcam images. Tremor and explosion signals seem to have increased even further.
Seismic and - judging from the felt pressure waves and sounds - explosive activity continue to be elevated, but bad weather inhibits good observations. Last night, the eastern lava over flow was weakly active at the outer flank of the NE cone. Strong glow over the summit, despite partially dense cloud cover, indicates that the magma column inside is high and ready to produce more lava flows.
Current seismic signal on Stromboli ST8 station 11Jan
Thermal webcam image of the crater area (INGV) showing a new overflow on the northern side of the NE crater and the cooling overflow on the northern side (r) from this night
New lava overflows occurred this night (on the northern side) and this morning (eastern side) of the SE crater. Strong detonations from large exploding magma bubbles can be felt and heard in the village, rattling doors and windows.
Thermal webcam image of the crater area (INGV) during an explosion from the NE crater
Strong continuous spattering from the NE vent hornito
The magma column inside the NE vent system remains at very high level. This could be seen today as continuous, strong spattering from the hornito in the western end of the NE crater. The spattering, sometimes interrupted by jets of 100-200 m height, reached tens of meters and often ejected lava bombs onto the outer flank. ...more
Large fluid lava bubbles burst from the main vent at irregular intervals of 10-40 minutes, and throw bombs, visible from the village, to heights of several hundreds of meters. The other vents, in particular the NW one, had only rare and modest typical strombolian activity. [less]
Lava flow on Sciara del Fuoco on 7 Jan evening from a vent at the outer rim of the NE cone, and a strombolian eruption from one of the NW vents.
Elevated activity continues. The hornito at the western rim of the SE crater showed strong continuous spattering today. Beneath it, a small lava flow issued from an effusive vent through a breach in the northern outer flank of the SE crater cone and traveled about half way down the Sciara del Fuoco. ...more
The flow was active for a few hours, and mostly cooling in the afternoon / evening, but weak lava effusion from the vent continued. Glowing blocks detached frequently from the flow front at about 400 m elevation as well as from the vent and rolled down the slope, sometimes into the sea. Strong bursts of liquid lava bubbles from the NE cone occurred about every 30-40 minutes, as well as normal strombolian, jet-like eruptions from the NW vent. [less]
The configuation of the crater terrace on 3 Jan 2013
We visited Stromboli on 2 January and observed the following activity from about 8 vents in total (see image for location and naming of vents): ...more
The western crater produced tall, very noisy, straight candle-like strombolian fountains up to 300 m tall every 10-20 minutes from vent 2, lasting 5-20 seconds, often accompanied by ash-rich ejections from vent 1. The large hornito (6) at the northern crater rim was constantly glowing and spattering, and sometimes had small strombolian eruptions as well. The central crater activity was dominated by continuous spattering from a glowing circular vent (10) that ejected pulsating puffs of hot gas and steam and sometimes produced small gas rings that remained visible for up to 2 minutes.
Exploding lava bubble from the NE vent (12)
Simultaneous spatter- and ash-rich eruptions from the NW vent (1 and 2)
Activity has been at exceptionally high levels recently. During a recent visit, we observed several active vents inside the crater terrace with near-continuous lava spattering and strombolian explosion at intervals of 10-30 minutes, sometimes rich in ash and sometimes ejecting small fountains of glowing bombs. The northeastern vent in particular has been producing powerful and bright explosions of very liquid lava, with ejections into all directions reaching several hundred meters in height and throwing incandescent lava bombs all over the upper crater slope. ...more
These explosions occurred about every 20-30 minutes and caused loud detonations audible (and sometimes visible) in the village and rattle doors and windows. A very bright glow could sometimes observed above the crater terrace on 30 Dec and suggests that there are intermittent intra-crater lava flows.
Normal strombolian eruption from the western vent, spattering from a hornito and glow above the crater terrace
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