HYPOLIMNETIC HEATING IN CASTLE LAKE, CALIFORNIA1
- 1 April 1965
- journal article
- research article
- Published by Wiley in Limnology and Oceanography
- Vol. 10 (2) , 233-239
- https://doi.org/10.4319/lo.1965.10.2.0233
Abstract
A 5‐year series of summer temperature profiles was used to calculate the coefficient of eddy conductivity in a small (20.1 ha) mountain lake. The relatively high value obtained (6.22 × 10−2= g cm−1 sec−1) prompted us to evaluate the role of direct solar heating in the hypolimnion using data on total daily solar radiation, the spectral curve of sunlight, and the light transmission properties of the lake water. It was found that an estimated 65–85% of the heating in the upper hypolimnion could be accounted for by direct solar heating. It is postulated that in Castle Lake direct solar heating rather than turbulent mixing is responsible for the shape of the hypolimnetic thermal profile.Keywords
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