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Author Topic: Volcanoes  (Read 383 times)

Sigmetnow

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Volcanoes
« on: September 24, 2017, 09:51:38 PM »
A major eruption of Mount Agung in [Bali] Indonesia could happen at any time. This volcano has potential to temporarily cool the global climate.
https://twitter.com/EricHolthaus/status/911515451376771072

Bali’s Mount Agung threatens to erupt for the first time in more than 50 years
https://theconversation.com/balis-mount-agung-threatens-to-erupt-for-the-first-time-in-more-than-50-years-84356

Mount Agung in Bali at highest alert level 4. These are the alert levels for volcanoes in Indonesia. @USConGenSby @usaidindonesia
https://twitter.com/usembassyjkt/status/911600452826939392

More tremors as Mt Agung threatens to erupt
http://www.perthnow.com.au/news/western-australia/more-tremors-as-mt-agung-threatens-to-erupt/news-story/070c8b9deb0ab62828ea7f77a2170161
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Sigmetnow

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Re: Volcanoes
« Reply #1 on: September 24, 2017, 11:54:15 PM »
"Most of the direct hazard comes from pyroclastic flows (hot torrents of volcanic debris) in the yellow and red regions while mudflows could move through the river valleys leading from Agung (green)."

Indonesia’s Agung Raised to Highest Alert for Eruption
http://blogs.discovermagazine.com/rockyplanet/2017/09/24/indonesias-agung-raised-to-highest-alert-for-eruption/
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Avalonian

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Re: Volcanoes
« Reply #2 on: September 25, 2017, 02:25:16 AM »
This one is definitely worth keeping a close eye on, since it has the potential to go caldera... it's a tall edifice in an area with a lot of calderas, which hasn't yet collapsed. Its habit of having large (VEI-5ish) eruptions at extended intervals is worrisome, as it allows large magma chambers to build. Tambora was very similar before it went pop in 1815 - the largest eruption in modern history, which resulted in the 'year without a summer'.

Having said that, it's only a potential, and volcanoes do whatever they feel like (usually involving confounding geologists). A few thousand years here or there before the caldera collapse is nothing. So it could do something spectacular... but the odds are on another VEI-5 type eruption, with major local inconvenience (usually extremely well handled by the Indonesian authorities) but little global effect. So yes, definitely needs watching!

Sigmetnow

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Re: Volcanoes
« Reply #3 on: October 12, 2017, 08:16:45 PM »
Yellowstone supervolcano may blow sooner than thought — and could wipe out life on the planet
Scientists working in and around Yellowstone National Park say that the supervolcano sitting under the tourist attraction may blow sooner than thought, an eruption that could wipe out life on the planet.

According to National Geographic, the researchers, from Arizona State University, analyzed minerals in fossilized ash from the most recent mega-eruption and found changes in temperature and composition that had only taken a few decades. Until now, the magazine reported, geologists had thought it would take centuries for the supervolcano to make the transition. ...
https://amp.usatoday.com/story/757337001/
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Sigmetnow

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Re: Volcanoes
« Reply #4 on: October 13, 2017, 02:31:17 AM »
Just some amazing volcano eruption footage.  Eruption at Kirishima volcano in Japan.
Video at the link:  https://twitter.com/EarthUncutTV/status/918444023869607936
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