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Thread: Ice spike

  1. #1
    Super Moderator Catherine's Avatar
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    Default Ice spike

    Thought you might appreciate what I found in a bird bath on the morning of 11th February - when it was -7C here.

    I'd just filled the bird bath with fresh water the afternoon before, but I guess there must have been some ice below it....

    It does look rather rude, doesn't it?

    (Sorry, but I cannot find a better explanation than this just now - Defying the laws of gravity: ice spikes)

    We experienced something similar in Lanark many years ago. The spike then rose across the bird bath, making it look like a gnomon on a sundial. It had a broad, triangular base and was noticeably hollow in the centre. It happened on the night when we'd had the coldest weather of that winter - -27C at Carnwath near us, rising to -18C during the day. It was so cold that time that a curling match was held at Lanark Loch the next day - the first in nearly 100 years!
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  2. #2
    Administrator rolf's Avatar
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    Default

    Certainly a strange one Catherine, not seen that before.

    Here's a similar event.



    And here's the explanation.

    http://www.physics.utoronto.ca/~smor...icespikes.html
    Rolf

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    Slightly Mad Moderator ladylouise62's Avatar
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    LOL - a little rude, yes - but I also have visions of Blue Tits sliding down going "Wheeee!!!"

  4. #4
    Super Moderator Catherine's Avatar
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    Wonder if our Blueys thought of that?

    I found that video - and it is not unlike the one we had in Lanark. I noticed that other page too, Rolf. The explanation is good, but I've still to find one which is 'just right'. I HAD found a site last year though - when my sister-in-law 'grew' one in her birdbath as well, but I lost the link when my last computer 'died'

  5. #5
    Forum Quiz Master dig deep's Avatar
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    Strange indeed Mother Nature is playing with us

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