Spinning Ice Disk

 

 

North Dakota retired engineer George Loegering has found a rare spinning disk of ice in the Sheyenne River, a weather phenomenon experts say likely was caused by cold, dense air, and an eddy in the river. (Nov. 26)

“It’s not a continuous sheet of ice,” Schlag said. “If you were to throw a grapefruit-size rock on it, it would go through. It’s not a solid piece of ice – it’s a collection of ice cubes.”

Source: Spinning ice disk forms in North Dakota river

 
Ice circle – wiki
An ice disc, ice circle, or ice pan is a natural phenomenon that occurs in slow moving water in cold climates. Ice circles are thin and circular slabs of ice that rotate slowly in the water. It is believed that they form in eddy currents. Ice discs have most frequently been observed in Scandinavia and North America, but they are occasionally recorded as far south as England and Wales. An ice disc was observed in Wales in December 2008 and another was reported in England in January 2009

Ice circles vary in size but circles more than 15 metres (49 ft) in diameter have been observed
 

This was on a river in Morin Heights, Quebec, Canada
 


 
 
 
 
 

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About benvitalis

math grad - Interest: Number theory
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