Wind-Driven Sea Level Change of a Shallow Sea 
Over a Continental Shelf 
by 
Koji Hidaka 
ABSTRACT 
A theory of wind-driven surface slope and level change in a shallow 
sea close to the coast is given taking into account the earth's rotation 
and both vertical and horizontel mixing, A wind zone of finite width 
extending from the coast is assumed and the surface slopes in a steady 
state are computed at several distances from the coast. If these are 
pieced together, we can give the surface water level change as a function 
of the distance from the coast. This research represents a portion of a 
voluminous work which the author is carrying out concerning the three= 
dimensional steady motion of water and the surface-contours as generated ~- 
by a steady wind. 
I, Introduction. 
The concept of horizontal mixing introduced by C.=<G. Rossby (1936) 
and subsequently developed by R. B. Montgomery and H. U. Sverdrup hag 
presented several important changes and advantages in the dsteal explan= 
Peicn of various meteorological and oceanographical phenomena which had 
hitherto been very hard to explain. Montgomery mentioned various evie 
dences which showed that some oceanographical phenomena cannot be explained 
without taking this concept into account. We can mention the successful 
1 Contribution from the Department of Oceanography of the Agricultural 
and Mechanical College of Texas, Oceanographic Serics No. 000 3 based in 
part on investigations conducted through the Tems A. & M. Research Founda 
‘tion, under the sponsorship of the U. S. Navy Office of Naval Research, Con= 
tract, Nfonr-48702. 
