Layer of Frictional Influence

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Layer of Frictional Influence

 

the layer in which, because of friction, water is set in motion by wind action; the rate of motion of the water decreases with depth. According to the theory of the Swedish scientist V. W. Ekman, the rate of motion of water at a depth D is 1/23 the rate observed at the surface. Layer of Frictional Influence where α is the specific volume of water, μ is the coefficient of turbulent friction, ω is the angular velocity of the earth’s rotation and Φ is the latitude of the site.

A boundary layer of the atmosphere is also a layer of fric-tional influence.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.