Striped Icebergs: Colorful Layers of Snow - Antarctic

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vicked.vicky
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Striped Icebergs: Colorful Layers of Snow - Antarctic

Post by vicked.vicky » Jul 03, 2009 Views: 3460

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.

Vicked Vicky

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