Saturday, December 4, 2010

Mysterious Ice Vase.

Last night was cold and clear, leading to an attractively frosty morning.  The water in the bird bath froze, and somehow a tiny ice vase formed.  I'm not sure if it grew by addition of layers, like a Bermudian Boiler Reef, or if it somehow rose/was squeezed from the water as it froze.  It was about 2 cm end to end.

It wasn't hollow, but the top was concave.  As the day warmed, the middle melted away first.

A mystery.  And the coolest H2O-plus-cold-related phenomenon since the self-dinting snow of 2008.

5 comments:

biobabbler said...

wow. way too cool. I hope one of your readers can solve the mystery!

Tim said...

I vote for your first theory. The ice will form on the surface first. As the rest of the ice freezes, outside to in, it will expand, pushing the water through the thinnest part-the center. It does this slowly enough that as is extruded it is frozen as this interesting vase.

RPS77 said...

That's an odd little mystery. I think that I've seen little bumps in otherwise smooth frozen pools and wondered how they formed, but this is even more odd than those!

Urban Wild said...

WOW--now that IS really fascinating! Both phenomena are truly wonders. I always enjoy these posts with the little oddities that turn up--and you seem to find!

Dejemonos sorprender said...

Wa, very interesting that..