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Formation of brinicles





Ankhanu
One of my friends posted a link to a BBC Nature video/article snippet from Frozen Planet that shows the first time-lapse capture of the formation of brinicles under the Antarctic ice. Basically, a brinicle is an ice formation that extends down from the overhead sea ice into the water depths (like an icicle), formed by the creation of dense salty brine near the surface as the sheet ice forms (water freezes to ice and the salt falls out), the dense and cold brine sinks into the warmer water below, freezing the water around it in a tube. Eventually the tube can reach the bottom, freezing and killing any benthic life it catches in its path.

Pretty fascinating stuff!

Video/article
standready
Yes, that is truly fascinating stuff.
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