Joe Pylka wrote: > > > It's part of the annual cycle of water in a large, mostly deep, lake. > > The upper water cools as autumn/winter approaches, and at some point this > thermocline barrier breaks down and the upper and lower layers mix; fairly > abruptly and thoroughly. That's the Turnover. Thanks Joe and Brian for the explanation. I suspected that dynamic from season to season . What threw me was when Jennifer said "Since I live on a large, deep (660') lake, it is subject to "lake turns", where the water temps can vary as much as 10-15 degrees F in a day's time when the lake "turns"." So I couldn't understand how the water could mix from top to bottom over a 24 hour period . At least not to a great extent. But I suppose there is some turning or turnover in the upper layers of the water between sun rise to sun rise going from a hot sunny day to a cool night air with the complete turn over from summer to winter . I often paddle on a local lake where I think the maximum depth is around 400 feet in the main part of the lake so I was well aware that the water temps drop dramatically only a few feet down. Regards, David *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************Received on Sat Jul 06 2002 - 20:21:11 PDT
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