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Old 03-07-2021, 03:39 PM   #10
Moving along
Join Date: May 2006
Posts: 6,705
Originally Posted by 50something View Post
Getting back to “winter science” - anyone have any theories why even in this cold, snowy, classic winter, some lakes still have slush on top? We skied Tirrell Pond Feb 13th, the day after a -10F night, it hadnt been above 25 for weeks and yet just below the surface of the 5 inches of snow on top there was an annoying slush that required us to scrape the snow off twice. I am thinking that the weight of the ice creates capillary action pressure forcing micro amounts of water up into the snow cover that does not freeze solid and remains as like a “Permaslush”. I’m sure a low-temperature physicist could answer the question...[emoji3511]
Snow is a good insulator, and from what I was told once upon a time which seemed to make sense to me is that the water below the ice is above freezing temperature, and as that “heat” vapor escapes upward through the ice it gets trapped under the snow, causing the snow in contact with the ice to melt creating slush. Or something similar to that affect...
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