the ratio h/D,, that is to say, on the square root of the mixing coefficient, 
providing the depth to the bottom is given, Off Texas and Louisiana eoasta, 
the wind from east to southeast and from opposite directions will not be 
effective in raising or lowering the sea level on the continental shelf, On 
the contrary north or south winds are expected to produce strong falls or 
rises in the sea level on the shelf. | 
Summary. The theory of the wind-driven currents in a shallow sea is considered 
taking into account the effect of horizontal momentum transfer. Other assump- 
tions and conditions are nearly similar to Ekman’s work except that we assume 
an infinite straight vertical barricr for the coast. The complete solution 
involving the expressions for the three components of velocity and the varia- 
tion of the surface slope at different distances front the coast appears to 
take a very long time and require tedious computations. For this resson only 
the result for the slopes of the sea surface is given in this paper. The 
following conclusions have been drawn. 
(1) Due to the stress of wind there occurs a rise or fall of the sea 
surface, When the wind blows within a finite sone from the coast, this sur= 
face slope occurs only in this zone and no slope is seen outside it. 
(2) When the wind is wmiforn, bin Weir eee oa tidacehe int ene ieee 
or falls linearly toward the coast. 
(3) For a certain wind direction and for certain eee of the ratio 
k / D rn? no rise or fall of the sea level will occur. On the contrary, there 
will be directions of winds for which we have a maximum rise or fall of the 
sea level, These features will depend upon the direction of wind, depth to the 
bottom latitude and the vertical mixing coefficient. 
(4) Complete numerical solution of this problem for the three dimensional 
water movement is intended by the author for a future opportunity. 
=F 
