Archive for August 21, 2008

Striped icebergs, amazing pictures

August 21, 2008

A friend forwarded this email to me and I thought the pictures were really beautiful so I’m copying the text and pictures below. Enjoy!

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.

In some of these pictures, the water froze the instant the wave broke through the
ice. That’s what it is like in Antarctica where it is the
coldest weather in decades. Water freezes the instant
it comes in contact with the air. The temperature of the
water is already some degrees below freezing.
The wave froze in mid-air!!!



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