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Water can't Make up its Mind

Posted by Stephen Del Gaudio,
North Country explorer from Sayville, New York
March 27, 2014

After a very snowy winter on the campus of St. Lawrence University, there were a large amount of snow piles created by the plows that cleared the streets. This would often mix dirt and sediment into the snow creating a large pile of brown, dirty snow. As with anywhere else, the piles of snow take much longer to melt than the regular covering of snow, allowing them to last into warmer weather. Outside of Brown hall on campus, there was a large pile just like the one described, however this one had icicles hanging from the snow and staying anchored to the snow with out any outside support. This shows that the temperature varied somewhat rapidly, increasing past the melting point but then falling back below it before the entire pile could melt. The wide range in temperature could be due to the proximity of campus to a major water source like an ocean. The ocean helps regulate temperatures near the shore due to the high specific heat of water but because St. Lawrence is far from the ocean, over 300 miles away, the temperature does not have to deal with the constraints of needing a large amount of energy to increase or decrease. With the temperature free to vary greatly, the action of melting the pile and then re-freezing it could be seen.