Kim_Johnson
Eventually, the epilimnion warms to the point where the density between the layers is so large that wind and waves no longer generate enough energy to incorporate hypolimnetic water. As summer turns to fall, the surface waters cool and sink, mixing the epilimnion down to the hypolimnion and weakening the thermacline.
Eventually, the epilimnion cools until the entire lake is the same temperature. This allows the lake turnover to occur.
Never heard these terms before.
Neither had I. The only one I had heard of was hypolimnetic. I thought it sure was interesting though.