16 January 2019

Ice disks - updated


I've previously posted photos of interesting ice formations, including round ice floes in Russia and a "creek circle" in Canada.  This photo above was posted at the cosmos of enlightened vision; the disk was reportedly seen on the Salmon River in Idaho.

Related:  Frazil ice at Yellowstone (video).

Reposted from 2011 to add this massive one:


This disc formed on the Presumpscot River in Westbrook, Maine.  It's about a hundred meters in diameter.   Details, plus a rather unexciting video at Gizmodo, via Neatorama.

5 comments:

  1. Cool! When I was a kid I used to see these every once in a while in the brook that ran behind our house. We'd watch them for a while, then break them up by chucking rocks at them from the bank and watch the chunks bump away downstream. Good times!

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  2. The Salmon River (and the Lewiston Morning Tribune) are both located in Idaho.

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  3. Oops! Fixed. Thank you, Gretchen.

    stan

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  4. Interesting, I remember reading an article some time ago that was about a similar phenomonon, which occured with a perfectly circular hole in the middle of ice, usually unstable to walk. It kinda tried to link it to crop cirlces somehow...

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  5. Wow, this is a first for me, but my engineering training mentioned vector curl and so I see this as a natural example.
    quentin

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