alt Hacker NewsSurprised 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.
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FromHoiPolloi • today at 4:14 PM
My take would be that underwater temps cannot get below freezing. So the surrounding temperatures above water can be lower than under water.
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How cold is cold? :-)
Water below ”sea” level tends to stay around -1C (salt water) to 4C. Below that, water becomes ice…
Ambient temperature can drop to -40C … internally these ice blocks hoover around -10C.