STRIPED ICEBERGS

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 melt water 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.

These pictures are available because 2008 has been the coldest winter

in Antarctica in decades. 

For more images click on  "natural wallpapers " link on right side....