540 EIGHTH PACIFIC SCIENCE CONGRESS 



where 



The integration was carried out taking h = 0.1 in the interval 

 ^ t; ^ 1.0; and /i = 1 for the interval 1.0 ^ rj ^ 10.0. For larger 

 values of 77, integration was carried out by using the formula (82) 

 which is only inversely proportional to rj'^. In this case, we have only 

 to evaluate the integral: 



00 



10.0 



The computations were rather tedious and took three computers 

 more than six months to complete the surface, \J2D^, D^, 5/20^, 2D^ and 

 5D^. The values of «, ^, y and S which are the roots of the quadratic 

 equations (73) with ?; as a pai-ameter and computed for the necessary 

 values of rj, are compiled in Tables V to XIV (omitted). 



The values of the stream-function were computed for the western- 

 most 1/5 part of the entire expanse of the ocean, and the streamlines 

 were drawn for the layers z = (surface), l/2Dz, D^, S/2D^, 20^, and 

 SD^. The computations were not carried out for the deeper levels and 

 for the part to the east of this area, partly because we did not have 

 enough time to compute, and partly because the central and eastern parts 

 are not as interesting. We have only a very slow zonal flow^ in the central 

 part and very diffuse meridional flow close to the eastern coast of the 

 ocean. Indeed, the California and Peru Currents are considered to be 

 produced by local winds as proved by Munk (1950). 



The circulation patterns in the area close to the western coast were 

 obtained from these computations, and illustrated in the Figures 5, 4, 

 5, and 6. The discussions for them will be given in the following 

 paragraphs. 



Table II gives the velocities of the western current in the sub tropic 

 gyre corresponding to the Kuroshio, or the Japan Current, at the depths 

 z = (surface), 1/2D,, D„ 3/2Z)„ 2D^ and 3D, along the 33' N parallel, 

 which is the swiftest part of this mighty current. These velocities were 

 computed by the formula: 



(d<5r \ __ ^ (Aq + AA) —^{Xq — AX) 

 dx yXo " linear distance of 2aA 



V = 



