Friday, January 29, 2010

Stripped Icebergs

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.
 

Subconscious Mind!

What if I told you that there was a part of your mind that is always working, even when you are asleep? This part of your mind is known as...