This ice formed in this deep puddle after several days of freeze-thaw cycles in December 2011 in Lunenburg County, Nova Scotia. Each night the temperature dropped enough to freeze the whole surface. The days were warmer and each day the thinner, outer sections, further away from the log, melted back a bit, still leaving the ice nearest the log. Each night new ice formed, but, because of evaporation during the day, the level of the ice furthest from the log was a little lower on each subsequent day. With the gradually decreasing overall temperature, less ice melted back each day, leaving behind ridges that look like contour lines.

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Mary Anne White
Halifax, Nova Scotia
Second Prize ( Open Category )

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