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Iceberg Collapses and Flips over in Ilulissat, Greenland (July 25, 2026) [video]

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Re: Iceberg Collapses and Flips over in Ilulissat, Greenland (July 25, 2026) [video]

#22
Surprised the bottom of the iceberg crumbled so easily (like sand) at 4m 16s: https://www.youtube.com/watch?v=UufMqwyO7pY&t=4m16s

I'd have assumed it would be colder and more compacted (being toward the bottom and further under water), and therefore harder.

Re: Iceberg Collapses and Flips over in Ilulissat, Greenland (July 25, 2026) [video]

#23
post #9

I would have thought it would generate enormous wave, but that's clearly not the case. I think some of the biggest waves was generated by a mountain sliding or collapsing in the sea. I expected something similar here. Anyone know why not?

It is not a very energetic event for its size. The iceberg is floating, it can't accumulate a lot of potential energy before flipping, so when it happens, there is not enough to make big waves. The center of gravity of the iceberg barely moves.

A mountain sliding into the sea is different, these higher up rocks have a lot of potential energy, that convert into kinetic energy as they fall, which is transferred to the water as they splash down, making big waves.

Re: Iceberg Collapses and Flips over in Ilulissat, Greenland (July 25, 2026) [video]

#24
post #9

I would have thought it would generate enormous wave, but that's clearly not the case. I think some of the biggest waves was generated by a mountain sliding or collapsing in the sea. I expected something similar here. Anyone know why not?

i suppose its not actually displacing a lot of water volume, unlike a landslide.

Re: Iceberg Collapses and Flips over in Ilulissat, Greenland (July 25, 2026) [video]

#26
post #22

Surprised the bottom of the iceberg crumbled so easily (like sand) at 4m 16s: https://www.youtube.com/watch?v=UufMqwyO7pY&t=4m16s I'd have assumed it would be colder and more compacted (being toward the bottom and further under water), and therefore harder.

My take would be that underwater temps cannot get below freezing. So the surrounding temperatures above water can be lower than under water.

Re: Iceberg Collapses and Flips over in Ilulissat, Greenland (July 25, 2026) [video]

#27
post #17

Beautiful and scary at the same time. Almost like the iceberg was a planet on its own with mountains, valleys, crevices. Then everything goes haywire. The fall of a majestic titan. The destruction of a world.

In short, a titanic event...

Re: Iceberg Collapses and Flips over in Ilulissat, Greenland (July 25, 2026) [video]

#28
post #22

Surprised the bottom of the iceberg crumbled so easily (like sand) at 4m 16s: https://www.youtube.com/watch?v=UufMqwyO7pY&t=4m16s I'd have assumed it would be colder and more compacted (being toward the bottom and further under water), and therefore harder.

My take would be that underwater temps cannot get below freezing. So the surrounding temperatures above water can be lower than under water.

plus thermal conductivity of water vs atmosphere
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