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After a month or so (?) of unrest under Keilir on Reykjanes peninsula, last night there was finally an eruption. A roughly half-km long fissure opened in Geldingadal ("valley of the castrated").
How will it play out? How far will lava flows reach? Reykjanes peninsula is the most densely populated part of Iceland, though this is relatively far inland and in a valley that will limit spillover.

News articles (in Icelandic) with photos and such:
https://www.ruv.is/frett/2021/03/20/myndskeid-gaeslunnar-af-eldgosinu
https://www.visir.is/g/20212087267d/nyjar-myndir-af-gosinu-i-geldingadal

Coverage of the event so far on volcanocafe:
https://www.volcanocafe.org/possible-runup-phase-at-fagradalsfjall/ (02-26)
https://www.volcanocafe.org/a-reykjanes-story-2/ (03-01)
https://www.volcanocafe.org/imminent-eruption-near-keilir-likely/ (03-03)
https://www.volcanocafe.org/reykjanes-monitor/ (03-06)
https://www.volcanocafe.org/the-happy-dyke-of-fagradalsfjall/ (03-14)
https://www.volcanocafe.org/eruption-at-reykjanes/ (03-19)

Live webcams on míla, from distance:
https://www.livefromiceland.is/webcams/keilir/
https://www.livefromiceland.is/webcams/keilir-thermal/

Another live webcam overlooking the valley itself:
https://www.ruv.is/frett/2021/03/20/beint-vefstreymi-fra-borgarfjalli-ad-eldstodvunum

Youtube restream:
https://youtube.com/watch?v=T_9z9-ndZnA





 >>/43030/
Eh, Etna is active about every 2-3 years. Though this time is a bit more spectacular than usual.
Overall it's maybe a little more active than usual globally, but nothing extraordinary.

Two more sites for following volcanoes besides the volcanocafe I linked:

https://lechaudrondevulcain.com/blog-spotlight-two-column/ (daily volcano update blog, in french and english)
https://www.volcanodiscovery.com/ (aggregates volcano data worldwide)






















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 >>/43341/
It keeps going at similar rate.
Eruption is similar to Surtsey (which was however mostly submarine)  and that lasted 1963-67, creating an island.

> The area of the lava flow reached 0.9 km2, and the total volume is now more than 14 million cubic meters.

In the meanwhile there was also a LOT of explosions at Soufriere, St. Vincent... not much pics and vids tho.
But it erupted a LOT of SO₂ and it even reached the stratosphere. Not enough to affect climate though, I'm afraid.


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 >>/43368/
SO₂ freezes out in the stratosphere into aerosol and forms a haze that reflects part of sunlight. Since there's no weather going on in the stratosphere it takes very long for this haze to get cleaned out; it takes a couple years to clean up to normal levels.
But it's important that there's a strong temperature inversion at the top of the troposphere (similar to how air cannot rise out of basins in winter), so unless the eruption cloud is strong enough to punch through that, majority of it is washed out of the atmosphere quickly as acid rain.
The stratosphere starts at about 16-18km at the equator, and lower further north you go (cold air is more compact) down to about 8km in polar regions. Majority of Soufriere's plume stayed below that, but some punched through.
https://earthobservatory.nasa.gov/images/148190/tracking-la-soufrieres-plume

Oh I should note – historically very large volcanic eruptions (e.g. Tambora, 1815) are linked to "Years Without a Summer" – temperatures dropped by ~1°C on average globally the next year, there were crop failures, and there was persistent orange haze visible on the sky.

 >>/43372/
> Oh I should note – historically very large volcanic eruptions (e.g. Tambora, 1815) are linked to "Years Without a Summer" – temperatures dropped by ~1°C on average globally the next year, there were crop failures, and there was persistent orange haze visible on the sky.


Really now? ngl, that sounds so interesting if it's true


 >>/43379/

It is pretty known concept: https://en.wikipedia.org/wiki/Volcanic_winter

This thing also was used as model for nuclear winter scenario, although it has much more assumptions and uncertainties.




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 >>/43482/
Apparently, mushrooms grow the most during thunderstorms. 

https://www.nationalgeographic.com/science/article/100409-lightning-mushrooms-japan-harvest

https://www.quora.com/Why-do-mushrooms-grow-during-thunderstorms

https://www.intelligentliving.co/mushrooms-thrive-lightning/

> Lightning makes mushrooms more plentiful, according to ongoing research that offers a solid scientific basis for Japanese farming lore.

> For generations, Japanese farmers have welcomed storms over their fields based on the belief that lightning strikes provoke plentiful harvests of mushrooms, which are staples of Japanese cuisine. 

> Currently, mushroom demand is so high that dealers are increasingly turning to foreign suppliers. Japan imports about 50,000 tons of mushrooms a year, mainly from China and South Korea.

Really makes you think

 >>/43483/
That's a really good info, thanks, Bernd. Although I'm not sure how it could be useful since I only can generate small lightnings.
> shiitake and nameko mushrooms, while we also tested reishi mushrooms,
What are these mushrooms wtf talk Hungarian you japs.



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Was total lunar eclipse couple days ago. Couldn't be seen from here.
https://www.timeanddate.com/eclipse/lunar/2021-may-26
https://theconversation.com/supermoon-red-blood-lunar-eclipse-its-all-happening-at-once-but-what-does-that-mean-161262
Here's timelapse video:
https://tube.cadence.moe/watch?v=0I1YENllk_4





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