Effect of Wind Stress on Stratified Deep Lake

by Niels-Erik Ottesen Hansen, Research Engr.; Inst. of Hydrodynamics and Hydraulic Engrg., Technical Univ. of Denmark, Lyngby, Denmark,

Serial Information: Journal of the Hydraulics Division, 1975, Vol. 101, Issue 8, Pg. 1037-1052

Document Type: Journal Paper


The basic equations for wind-driven flows in deep two-layered lakes are outlined. The deepening of the upper layer due to entrainment of more dense water from the lower layer is explained physically, and the entrainment is then related to the wind shear stress at the water surface and an overall Richardson number. The general shapes of the distributions of shear stress and velocity are outlined. Diffusion and dispersion coefficients are calculated and related to the depth of the upper layer and to the wind shear stress at the surface.

Subject Headings: Shear stress | Wind engineering | Water stratification | Lakes | Entrainment | Water surface | Velocity distribution | Stress distribution

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