Wednesday, December 23, 2009

Iceberg Stripes




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.

1 comment:

Please refrain from rude comments about this blogs topics. If you don't care for the things posted, because for some reason they offend you, please click off the blog- it's really that easy.