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ice in lakes and rivers :: Ice in lakes -- Britannica Online Encyclopedia
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ice in lakes and rivers

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Ice in lakes

Ice formation

Changes in temperature structure

The setting for the development of ice cover in lakes is the annual evolution of the temperature structure of lake water. In most lakes during the summer, a layer of warm water of lower density lies above colder water below. In late summer, as air temperatures fall, this top layer begins to cool. After it has cooled and has reached the same density as the water below, the water column becomes isothermal (i.e., there is a uniform temperature at all depths). With further cooling, the top water becomes even denser and plunges, mixing with ... (100 of 5309 words)

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HOW - Lake Ice

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ice in lakes and rivers. (2010). In Encyclopædia Britannica. Retrieved February 01, 2010, from Encyclopædia Britannica Online: http://www.britannica.com/EBchecked/topic/328152/lake-ice

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