Thursday, June 12, 2008

Striped Icebergs!


Different coloured stripes can be formed in icebergs.

When melt water fills a crevice in a glacier and freezes so quickly that it contains a lot of air bubbles, a blue stripe results.




When as iceberg crashes into the sea, a salt-water layer can form on the underside. If this layer contains enough algae, a green stripe is created.

And when sediment is collected as an ice sheet moves down towards the sea, brown, black or yellow stripes occur.

My immediate reaction to these photos was that someone had been seriously experimenting with their Photoshop software!

7 comments:

  1. Goes to show you that nature can even make ice beautiful. Though I really am not interested in freezing my balls off trying to view those incredible designs.

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  2. hey greg - yeak, hood for soemone to have taken the pics for us! nick

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  3. LOL - watching tv - should have read 'hey greg. good for someone to have taken those pics for us. take care.

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  4. love the stripes. Did not get the chance to see any when I went to Alaska. But I do love the discovery cahnnel.
    Ray

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  5. hey ray's cowboy - envy your having been to alaska - wanna go to the antartic - you can take a tramp steamer from australia down there for a couple of weeks - walk across a bit of the ice - there's land underneath, unlike the artic as you will know. so hope to do this trip not too far off. nick

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  6. Great photos. I thought at first this was going to turn out to be another deleterious effect of global warming, so it's nice to find out that it isn't!

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  7. global warming is going to be the culprit for so much. the one-explanation view of all things is a non-thinking position. of course it is there and its effects profound. and most politicians and others in power choose to ignore it still. but great pics - yes! take care. nick

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