17th
July
2008
Amazing striped icebergs
posted in Misc |
Icebergs in the Antarctic area sometimes have stripes, formed by
layers of snow that react to different conditions.
Blue stripes are often created when a crevice in the ice sheet fills
up with meltwater and freezes so quickly that no bubbles form.
When an iceberg falls into the sea, a layer of salty seawater can
freeze to the underside. If this is rich in algae, it can form a green
stripe.
Brown, black and yellow lines are caused by sediment, picked up when
the ice sheet grinds downhill towards the sea.
This entry was posted
on Thursday, July 17th, 2008 at 12:17 am and is filed under Misc.
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