• Erlingur@programming.dev
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    1 year ago

    I live about 30 minutes away. We’ve had a lot of earthquakes the past few days. This should shut them up :) Some scientists say we’ve entered a period of very frequent volcanic activity for the next 100 years or so in this area.

    • Another Person @lemmy.world
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      1 year ago

      Ahh yes just what we need. More toxic gases being vented into the atmosphere. I’m sure it will be fine.

            • NoIWontPickaName@kbin.social
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              1 year ago

              Maybe, maybe not. Fire triangle is heat, fuel, oxygen.

              We can assume safely fuel and heat, oxygen is tricky though.

              Explosions and ignitions only happen in a happy zone.

              Too much or too little oxygen disables everything.

              We also have to calculate what mix of hydrocarbons we are dealing with, how hot the ignition points are and the pressure exerted by gravity and the atmosphere.

              I don’t think there is enough oxygen.

              Even under ideal circumstances and distribution, there is still only 21% oxygen in the air.

              Propane needs 8x the amount of oxygen for a complete burn as acetylene does and acetylene in open air just produces thick greasy black strings in the air.

              Idk the exact mix but I know you can barely hear acetylene coming out of a torch, but the oxygen side is loud as fuck.

              Given a reasonable variance for imprecision, I feel the variance in sound levels is proportional to gas flow.

              However depending on the pressure, you could need even more.

              Diesel fuel is damn near impossible to light on fire at SPT, but put it under compression and it will self ignite.

              We use turbos, basically little air compressors, to force as much regular air as possible into an engine, because it uses so much oxygen.

      • HenriVolney@sh.itjust.works
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        1 year ago

        There’s actually a lot of small mineral dust that are sent in the air, that can filter some sun rays and decrease the heat

      • schroedingershat@lemmy.world
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        1 year ago

        These ones cool stuff in the short term (and cause acid rain, ozone depletion, famines and long term warming; and there’ll probably be a new thing this time around where some countries have reduced solar output).

        They also ground planes and cancel road trips.

        This volcano might even save us from a blue arctic event for a few extra years, so it could be a wash in terms of climate (although definitely not for europe’s ability to feed itself)

    • ext23@lemmy.world
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      1 year ago

      I don’t mean to steal attention away from Iceland and hope you are all safe, but it’s a similar thing in Japan. We’re due for a megathrust earthquake that could be way way worse than Fukushima.

  • MrsDoyle@lemmy.world
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    1 year ago

    This bit made me laugh:

    Þórdís [reporter] says people are flocking and letting the warning words of the Civil Defence fall on deaf ears. The police are also working hard to remove cars that are inside the closure area.

    Þórdís and Bragi [photographer] are watching the eruption up close. However, they cannot stay there for long because the lava is expected to soon flow over the roads they used to get there.

  • Chathtiu@lemmy.world
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    1 year ago

    This is so exciting. The last time there was a major volcanic eruption in Europe, it shut down air travel for ages over there. Plus there was a cool and totally improbable scene in Walter Mitty about it.

    • onoki@sopuli.xyz
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      1 year ago

      For ages = for one week in the Central Europe. I had a trip booked for roughly exactly the duration of the eruption back then.

      • Chathtiu@lemmy.world
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        1 year ago

        For ages = for one week in the Central Europe. I had a trip booked for roughly exactly the duration of the eruption back then.

        It was shut down entirely for a week initially, and then would be shut down again periodically as the ash/debris cloud floated along through air lanes.

        Also that totally sucks.

    • Holyhandgrenade@lemmy.worldOP
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      1 year ago

      That Walter Mitty scene made me laugh. It was filmed in Seyðisfjörður, which is around 700 km away from Eyjafjallajökull. They had even changed the map shown in the movie, so it was unrecognizable for an Icelander! 😂

      • Chathtiu@lemmy.world
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        1 year ago

        That Walter Mitty scene made me laugh. It was filmed in Seyðisfjörður, which is around 700 km away from Eyjafjallajökull. They had even changed the map shown in the movie, so it was unrecognizable for an Icelander! 😂

        I had no idea. That’s hilarious.

    • Sveitadurgur@lemmy.world
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      1 year ago

      This is the third eruption that’s occured on the peninsula in three years and it’s largely died down so I wouldn’t call it “exciting”

      It’s pretty though.

      • Chathtiu@lemmy.world
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        1 year ago

        This is the third eruption that’s occured on the peninsula in three years and it’s largely died down so I wouldn’t call it “exciting”

        It’s pretty though.

        Volcanic eruptions are always exciting.

  • Typeo@lemmy.world
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    1 year ago

    We were lucky enough to visit the last one when it erupted. Hopefully nothing major and everyone is safe.

    • Holyhandgrenade@lemmy.worldOP
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      1 year ago

      Lava eruptions like this tend to be less dangerous than ash eruptions, which can mess up air traffic and the ashfall is bad for the lungs and crops. So I don’t think there’s much cause for concern.

      • Nepenthe@kbin.social
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        1 year ago

        TIL volcanoes even have two different eruptions. I just always imagined they came with ash as a given. That makes me feel a bit better about this, though I still echo their hope for as little damage as possible.

        • Meldroc@lemmy.world
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          1 year ago

          I think it depends on the particular volcanoes. The volcanoes in Iceland and Hawaii, IIRC, have thinner and less gassy magma, so there’s not as much gas buildup, and the eruptions tend to have more liquid lava. Elsewhere, say Mt. St. Helens, the eruptions tend to have thick lava, with lots of trapped gas inside, that tend to cause giant explosions, pyroclastic flows & big ash clouds.

          • Mrk421@kbin.social
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            1 year ago

            I would hazard a guess that it’s dependent on even more than region. Wasn’t it an Icelandic volcano that shut down air travel because of ash a few years back?

            • Holyhandgrenade@lemmy.worldOP
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              1 year ago

              When it erupts underneath a glacier, it causes huge clouds of ash to form. The volcano you’re talking about (Eyjafjallajökull) is a glacier volcano in the highlands whereas this one is on the Reykjanes peninsula on the west side.

        • Holyhandgrenade@lemmy.worldOP
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          1 year ago

          I’m by no means an expert but in Iceland,
          eruption under a glacier = ash eruption
          eruption not under a glacier = lava flow.
          I’m sure it’s more nuanced than that but it seems to be the rule of thumb over here.

  • johnrock123@futurology.today
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    6 months ago

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