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Author Topic: Volcanoes  (Read 168 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: Today at 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!