Eruption on Reykjanes Peninsula - RÚV.is
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An eruption started between Sýlingarfell and Hagafell at 10pm. An earthquake swarm started in the magma intrusion north of Grindavík around one hour earlier.There is a risk of lava flowing to Grindavík, says Kristín Jónsdóttir of the Icelandic Met Office.The worst possible location, say Þorvaldur Þórðarson and Benedikt Ófeigsson.Civil Defence emergency level declared.The fissure is still getting longer and has grown to about 3.5 kilometres.The flow of lava in the eruption is many times higher than the eruptions of recent years on the Reykjanes Peninsula.The police chief in Suðurnes says that no one should be in danger.Reykjanesbraut has been closed and people are asked to evacuate it.
  • Quokka@quokk.auEnglish
    36·
    11 months ago

    One thing I miss from reddit is those people who’d come in and explain everything, like that Earthquake person.

  • A_A@lemmy.worldEnglish
    22·
    11 months ago

    You have either plutonic or basaltic volcanoes. This is a quiet plutonic one : it’s lava flows without explosions, so, there could be much worse scenarios. But still, it is a big one.
    Edit : My use of “plutonic” might be outdated or wrong : I think this is the old way it was described, but today, I cannot find a reference to support it.

    • Guessologist@lemmy.worldEnglish
      15·
      11 months ago

      It’s all about how much silica is in the lava - not much and you have basalt, fairly runny so the gas escapes and you get fire fountaining and lava flows. More silica gives you very viscous lava like rhyolite or andesite - traps the gases, far more explosive and dangerous eruption styles.

      • A_A@lemmy.worldEnglish
        2·
        11 months ago

        You are right
        …and my use of “plutonic” is either outdated or plainly wrong.
        I found this for anyone who wants to read more :
        https://en.m.wikipedia.org/wiki/Lava
        “Properties of lava”

        Because of the role of silica in determining viscosity and because many other properties of a lava (such as its temperature) are observed to correlate with silica content, silicate lavas are divided into four chemical types based on silica content:
        felsic,
        intermediate,
        mafic, and
        ultramafic.

      • Logi@lemmy.worldEnglish
        15·
        11 months ago

        The difference there was that it came up under the glacier Eyjafjallajökull and the magma meeting ice caused steam explosions throwing ash and other material high in the air.

      • A_A@lemmy.worldEnglish
        1·
        11 months ago

        Oups, maybe this is an outdated terminology : I couldn’t find any references to support it. Please read my other comments and “edit” around here.