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Underwater volcanoes are responsible for climate change. Prove me wrong.
You, and opinions stated as facts by ignorant people are exactly what is wrong with the internet. I used to think everyone having a voice was a wonderful, liberating new freedom for the whole world. The last few years have really changed my mind.
It's interesting to read an article and come to HN hoping to find more interesting comments only to find one thread with stupid memes. Is this the largest ever because we're just starting to be able to map this type of stuff or have we seen a lot of them and this is enormous?
I think 5 km^3 is a large eruption by any standards. Looking at lists of modern ones it's a index 6 event which happen every few decades on land. From the article it sounds like if it weren't close to Mayotte it wouldn't have been picked up seismically.
... gas trapped inside the black volcanic material. Sudden release of such gases has been suspected in the case of a number of sudden ship disappearances over the centuries. If a bubble's volume is large relative to the ship's, the ship will drop to the bottom as the gas forces water from under the hull. Then the surrounding seas crash onto the decks.
Underwater volcanoes are responsible for climate change. Prove me wrong.
... gas trapped inside the black volcanic material. Sudden release of such gases has been suspected in the case of a number of sudden ship disappearances over the centuries. If a bubble's volume is large relative to the ship's, the ship will drop to the bottom as the gas forces water from under the hull. Then the surrounding seas crash onto the decks.
Water is also heavier than air, and water on top of a bubble will also fall into the center of the bubble (breaking it up into smaller bubbles), until the surface tension of the water around the bubble is great enough to hold it together (small bubble).
Therefore a huge bubble gets split into many bubbles, I suppose at depth a lot of the gas gets dissolved into the water. The worst that would happen is many small bubbles cause the density of the water to decrease, causing the boat to sink lower into the water. I'm not sure if the water could lose enough density to sink a regular boat directly?
I think what you may be thinking of is large, shallow explosions (generally man made) under a ship which create a temporary bubble which then collapses in on itself, but can cause extreme stress on large ships.
Extremely contrived example of bubbles being able to sink a small boat: https://www.youtube.com/watch?v=MSmAXp_BHcQ
How a bubble generated by an explosion can actually sink a large ship: https://youtu.be/UdFNuc5XtII?t=192