Some Features of Wind Action on Shallow Lakes

by Robert B. Banks, (M.ASCE), Prof. of Environmental Engrg. and Research Engr.; Inst. of Engrg., National Autonomous Univ. of Mexico, Mexico, D.F., Mexico,

Serial Information: Journal of the Environmental Engineering Division, 1975, Vol. 101, Issue 5, Pg. 813-827

Document Type: Journal Paper


The shear stress due to wind action on a shallow lake or lagoon creates a velocity distribution in the vertical direction. Assuming the vertical turbulent diffusion coefficient, K, is constant, the velocity distribution is determined with and without Coriolis effects. Relating the water velocity at the surface to the wind velocity, U, produces the result that K is directly proportional to U if the wind shear stress coefficient, Cf, is constant. It is also established that the surface reaeration coefficient, K2, is directly proportional to U if Cf is constant. Oxygen and heat transfer data obtained by others indicate that K2 is proportional to U² for large values of U. Three examples of application are presented concerning Lake Chapala, Mexico.

Subject Headings: Shear stress | Velocity distribution | Wind forces | Wind speed | Wind engineering | Shallow water | Lakes | Fluid velocity | Mexico

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