Volcano, ash and lightning

Volcano, Stefnisson
Click to enlargeSigurður Stefnisson

Ash and Lightning above an Icelandic Volcano

Why did a picturesque 2010 volcanic eruption in Iceland create so much ash? Although the large ash plume was not unparalleled in its abundance, its location was particularly noticeable because it drifted across such well-populated areas.

The Eyjafjallajökull volcano in southern Iceland began erupting on 2010 March 20, with a second eruption starting under the center of a small glacier on 2010 April 14. Neither eruption was unusually powerful. The second eruption, however, melted a large amount of glacial ice which then cooled and fragmented lava into gritty glass particles that were carried up with the rising volcanic plume. Pictured above during the second eruption, lightning bolts illuminate ash pouring out of the Eyjafjallajökull volcano.

Thanks, Ursarodinia

10 thoughts on “Volcano, ash and lightning

  1. Baboso says:

    Sigurður Hrafn Stefnisson photographs @ http://www.flickr.com/photos/stefnisson/4536536192/ click image for slide show

    It sates itself on the life-blood
    of fated men,
    paints red the powers’ homes
    with crimson gore.
    Black become the sun’s beams
    in the summers that follow,
    weathers all treacherous.

    Do you still seek to know? And what?

    A shamanic seeress describing the Ragnarök to Odin In the Poetic Edda poem Völuspá, (Old Norse Vǫluspá, Prophecy of the Völva) http://en.wikipedia.org/wiki/V%C3%B6lusp%C3%A1

  2. angrymanspeaks says:

    Have I mentioned yet that I am always impressed by the quality of your posts. I skip many that show up in my e-mail but I never delete yours without a look. I am never disappointed. I realized this as I was “filtering” my mail today. I don’t give or receive awards but if I did…

    Peace

    • eideard says:

      Thanks, much. Yup, WordPress Awards are nice for some; but, this particular geezer has been at it long enough to be satisfied drawing breath for another day – and reminding folks [as Alan Sillitoe’s famous character, Arthur Seaton, said] you don’t let the bastards grind you down.

  3. Stromboli says:

    “Another Unpronounceable Icelandic Volcano Is Getting Ready to Explode” http://www.slate.com/blogs/future_tense/2014/08/19/iceland_volcano_bardarbunga_how_bad_would_an_eruption_be.html Bárðarbunga is a big volcano directly beneath Iceland’s largest glacier {Vatnajokull}. Over the past 10,000 years, it has erupted “more lava than any other volcano on the planet.” Includes link to live webcam. Additional information and photos @ http://volcanocafe.wordpress.com/2014/08/18/probable-eruption-at-bardarbunga/

  4. Skræling says:

    Volcanic eruptions can spark squalls of lightning that are as intense as the biggest superstorms over the central United States, according to researchers who have captured the most detailed measurements of electrical discharges during a volcanic blast. The data, they say, could help to illuminate what causes volcanic lightning and point the way towards a system that can quickly detect ash plumes from remote eruptions, which can disrupt air travel. http://www.nature.com/news/volcanic-eruptions-trigger-shocking-finding-1.10671 In early 2009, seismic rumblings beneath Alaska’s Mount Redoubt provided an opportunity for a team from the New Mexico Institute of Mining and Technology in Socorro and the University of Alaska in Fairbanks. They raced to the mountain and set up four small monitoring stations with very high frequency (VHF) antennas to record the radiation from any lightning discharges. Two months later, Mount Redoubt erupted and the team was deluged with data.
    “We had 16 large volcanic lighting storms, so that was a lot of data to compare between the different eruptions,” says Sonja Behnke, a graduate student at the New Mexico institute and first author on a paper about the eruption in the geophysics publication EOS this week (May 2012)

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