Eruption and lava flow on northern flank of Stromboli volcano

August 6, 2011Italy – Stromboli is stirring. This marks the first lava effusion outside the crater terrace since the emission of a small lava flow in the night of 11-12 December 2010. Around 2100 GMT on 1 August, a vast accumulation of incandescent material appeared at the base of vent N1, the northernmost of the various active vents that lie within the crater terrace at about 750 m elevation on Stromboli. A few minutes later, this material started to collapse and slide, and then developed two small lobes of lava, the more easterly of which descended slowly on the steep slope of the northern portion of the Sciara del Fuoco, repeatedly generating collapse and small landslides derived from the loose material that the slope is made of. The lava then accumulated on the flat area where the hornitos of the 2002-2003 eruption had been located, before making its way down the steep slope below that flat area (as is shown in the two bottom frames in the figure above). On the late morning of 2 August, the lava flow had descended to about 500 m elevation and was advancing very slowly. During the early afternoon of the same day, feeding of the lava flow appeared to diminish. This lava flow represents the first major summit overflow at Stromboli for several decades, the most recent similar event being the eruption of November 1975. During the subsequent eruptions, in 1985-1986 and 2002-2003, lava effusion occurred from eruptive fissures on the upper northern slope of the Sciara del Fuoco, whereas in 2007, the main effusive vent was located at 400 m elevation. Differently from these eruptions, the usual Strombolian activity from the summit craters has not ceased with the onset of lava effusion on 1-2 August 2011. –CT.Ing.It
contribution EuroAtlantic
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This entry was posted in Earth Changes, Earth Watch, Seismic tremors, Volcanic Eruption, Volcano Watch. Bookmark the permalink.

6 Responses to Eruption and lava flow on northern flank of Stromboli volcano

  1. Luis D. Rey says:

    You know is really unbelievable that in all this information regarding this volcano etc., at no point a real map is shown indicating at least the name of the Country where this eruption is taking place,

    Like

  2. Luca says:

    I know more and more volcanoes will continue to erupt.

    Like

    • Willem says:

      Hi Luca,
      Question; I like to visit a volcano who continue erupt, its for me something i like te see
      in my life. Not one extreem eruption but only spitting lava in the air. I think this is so nice to se and film in the night.
      You say there are more volcano’s to see, please can you have some locations for me
      or is the Stromboli also the best to visit.
      Thanks
      Willem from the Netherlands

      Like

  3. luisport says:

    Kirby on August 6, 2011, 3:02 PM
    @Renato & all, I know its a little late but here’s some of my screen captures from last nights show at Etna:

    http://www.flickr.com/photos/kirby_05/sets/72157627368665408/

    Kirby on August 6, 2011, 3:28 PM
    I just found some more photos from ANSA & a link to a 7:27 video of last nights show. Thanks Raving for the Daily Mail pics.

    “FOTO – Etna di nuovo attivo 06 agosto, 13:15
    L’Etna e’ tornato a dare spettacolo in nottata”
    http://www.ansa.it/web/notizie/photostory/curiosita/2011/08/06/visualizza_new.html_758192897.html

    “Sicilia: le immagini dell’eruzione dell’Etna
    Pubblicato: sabato 06 agosto 2011 da Nemo”
    http://www.travelblog.it/post/13302/sicilia-le-immagini-delleruzione-delletna

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  4. c/o Luisport

    Increased activity at Marapi in Indonesia prompts elevated alert
    I wanted to make a quick post on the some new volcano news as I’ll likely be a little sporadic with my posts next week. I have my last trip of the summer to lovely Minneapolis for a SERC workshop called “Teaching Mineralogy, Petrology and Geochemistry in the 21st Century”, so I’ll be busy for a lot of the week.

    However, there is a some news of activity at another volcano in Indonesia – this one being Marapi. Don’t be confused, this is not a typo, I’m not talking at Merapi (although Google wants to correct Marapi to Merapi every time), but rather a volcano with a very similar name on Sumatra. Marapi is another stratovolcano that sees frequent small (VEI 1-2) eruptions, the last of these being in 2004, while an eruption in 1975 produce some fatalities. This week’s Global Volcanism Program Weekly Volcanic Activity Report did have a brief mention of the small explosions and increased seismicity at Marapi and Indonesia officials have raised the alert status of the volcano to Level 2 (of 4). The latest news has the volcano producing plumes that reach a few hundred meters (see above) and suggest that the explosions and seismicity are continuing, albeit at a lower level than earlier this week. Officials have also set up an exclusion zone of 3 km around the volcano’s summit.

    A word of caution – there are an awful lot of images in articles about this activity that show eruptions of Merapi rather than Marapi, so I’d be skeptical of most.

    http://bigthink.com/ideas/39621

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