121–130 of 269 posts
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I'm curious if this would cause a noticeable change in the pH of those waters, and if that could be a good basis for estimating how much ash was captured.
I wonder how many tonnes of fish got destroyed, cooked, or otherwise thrown many kilometers into the air.
Pretty cool way to look at it. My take away ... Florida is almost as big as Britain? Wow, I didn't realize how small Britain was.
Yes, these images are incidentally an excellent reminder to Europeans of how big the United States is. I read a lot of criticisms of the US from people overseas that seem to rest on a lack of understanding of the scale of the country. The US is huge. A volcanic plume that covers most of Britain or Spain would only cover about half of California. You can wrap your head around it using "Measure distance" in Google Maps…
Heard it go bang, 2600km away, echoing through the hills around our place at the top of the South Island of New Zealand. That's pretty staggering to think about it. Then to see other peoples Home Assistants around the world pick up the change in pressure on opposite sides of the planet. Mental, just mental...
My colleague's backyard weather station picked up the pressure wave in Christchurch several times as it repeatedly circled the globe. Sea levels in the upper south were a little 'odd', trending higher and more variably than usual, even if not by that much, for a week.
Did the the ocean influence the ease of expansion of the explosion? Or hinder it? We are comparing an underwater explosion to one on land, and I'm wondering if it's directly comparable.
From what I've read it seems that the ocean exacerbated the explosion: the hot magma caused water to vaporize and created a steam explosion. I've read about a 70x volume expansion and that the top altitude of the plume was steam. On the other hand, the ocean might have captured some of the ash (?)
Interestingly, Verne wrote the book nine years before the Krakatoa explosion. He must have been thinking of Tambora, though I’m not sure that eruption was well recognized at the time.
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Krakatoa is estimated at 200 MT energy, this was estimated as 6 MT.
The 6-10MT estimate is really a lower bound based on the amount of material moved from the island. A more reliable estimate is based on the overpressure, which was significantly larger than the Tsar Bomba (also exploded over an island) which was 50MT. https://text.npr.org/1074438703 That said, the amount of SO2 was fairly low, so the climate impact not likely to be large.
Heard it go bang, 2600km away, echoing through the hills around our place at the top of the South Island of New Zealand. That's pretty staggering to think about it. Then to see other peoples Home Assistants around the world pick up the change in pressure on opposite sides of the planet. Mental, just mental...
Heard it go bang, 2600km away, echoing through the hills around our place at the top of the South Island of New Zealand. That's pretty staggering to think about it. Then to see other peoples Home Assistants around the world pick up the change in pressure on opposite sides of the planet. Mental, just mental...
I've heard that the Krakatoa eruption was so loud that the sound wave reverberated around the globe several times. I assume that means if you're on exactly the other end of the world, the sound is coming at you from every direction? Similarly, no matter where you are on earth, the sound is coming at you from different directions at different times? Of course, I'm assuming that the sound wave was in audible frequencie…
Earlier quoted context omitted.
I wonder how many tonnes of fish got destroyed, cooked, or otherwise thrown many kilometers into the air.
I was thinking that too about whales and birds. Some species are found only on/around an island or two, like many of the Galapagos species.
Heard it go bang, 2600km away, echoing through the hills around our place at the top of the South Island of New Zealand. That's pretty staggering to think about it. Then to see other peoples Home Assistants around the world pick up the change in pressure on opposite sides of the planet. Mental, just mental...
What did the “bang” sound like? Was it the sharp crack of thunder close by, the slower rumbling of distant thunder, the sound of fireworks exploding, or would some other description fit better?
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> I mean, how fucking dumb do you need to be to look at a lava flow and cut a road or train track through it? Do they not realize that lava means "run"? Build infrastructure elsewhere. Right, and nobody should build cities on rivers or coasts, because rivers flood[1] and coasts get hurricanes that cause floods, nobody should build anything in valleys[1], because they flood, nobody should ever build anything in mounta…
> Right, and nobody should build cities on rivers or coasts, Many ancient civilizations knew not to build on coasts. Beijing, Xi'an, Cairo, Rome, Paris, Mexico City, Madrid, London, Moscow, Kyoto, most of these cities of critical governmental and strategic importance were not built on coasts for very good reasons. And then you have some modern hipsters after the 17th century who decided not to take a history lesson a…