Examination of the Thermocline

by John C. Sonnichsen, Jr., (A.M.ASCE), Development Engr.; Water and Land Resour. Dept., Battelle-Northwest, Richland, WA,
Clarence A. Oster, Sr. Res. Sci.; Appl. Math. Dept., Battelle-Northwest, Richland, WA,

Serial Information: Journal of the Sanitary Engineering Division, 1970, Vol. 96, Issue 2, Pg. 353-364

Document Type: Journal Paper


A mathematical model is used to simulate the development of a thermocline in a relatively quiescent body of water. A sensitivity analysis is performed on the light extinction coefficient and the thermal diffusivity to demonstrate the relative importance of each. Using measurements collected from Pend Oreille Lake in northern Idaho, a simulation is obtained. The Runge Kutta technique used to solve the diffusion type equation indicates the light extinction coefficient to be of primary importance.

Subject Headings: Sensitivity analysis | Diffusion (thermal) | Thermal analysis | Mathematics | Mathematical models | Simulation models | Hydrologic models | Lakes | Idaho | United States

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