18 January 2010

Too Cool!

Sourced from an email doing the rounds...sometimes its good to stop and remember the ultimate purpose of the sustainability quest!

'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.'

Then there are the waves!

'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. '

No comments:

Post a Comment

Please leave your comment here. Please note these stories are posted for information rather than for debate; if you wish to disagree with something posted, no problem, but since I post both things that I do and don't support, it would be appreciated if the criticism was about the issue.