Awesome Icebergs
In my ever continuing battle against email spam, I share for you the content of an email I received this afternoon. I have no doubt it’s been floating round the internet and web services since 1976 but this one’s new on me.
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.
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. Just look at how the wave froze in mid-air!!
If you know who the copyright belongs to, please let me know so that I can credit the photographer for these awesome photos!
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