coefficients" in the upper layers of the ocean, as far as they are 

 known. But the values given by (36) are to be expected only in the 

 case where the complex wave motion is fully developed. Therefore, 

 they depend upon only the wind velocity, and the coefficients M 

 rep resent maximum values at a given wind velocity . In the stages 

 where the sea is not fully developed, that is, when the sea is still 

 growing, the M-values will be smaller. We denote these smaller values 

 by M(p), and relate them to the "age" p of the longest wind-generated 

 wave present in the composite sea. The information currently avail- 

 able on the state of turbulence and on the eddy viscosity in the sur- 

 face layers of the ocean at different wind velocities and at different 

 stages of wave development is very meager. With respect to the nat- 

 ure of the phenomenon it seems reasonable to assume that the state 

 of turbulence increases with increasing development of the sea by 

 obeying an exponential law. Evidence of this will be presented later 

 but here it will be assumed that the Increase of turbulence, and of 

 eddy viscosity in layers with turbulent wave motion at a given wind 

 velocity obeys the law 



-2r 

 M(p) = Me 



and 



v-pi 



M(p) = Me V P°» /for Kp^Sjjj* , (37) 



) = M(l)e~^^^^"P^ for 0.1^p<l , (38) 



where M is the coefficient of eddy viscosity of the fully developed 

 sea as given by formula (36). p means the ratio 6" /v for fully 

 arisen "p -waves," which were considered to be the first character- 

 istic waves developed in the complex wave pattern, p is given by 

 computations in a previous paper [8] or by equation (60) in this 

 report as a function of wind velocity, p^^j* and r have the same mean- 



69 



