674 EIGHTH PACIFIC SCIENCE CONGRESS 



assumptions of no acceleration and no frictional forces, of course, were 

 accepted. 



However, the general current pattern indicated by the dynamic 

 computations in these studies is considered reasonably correct. In areas 

 where surveys were repeated during the same season but in different 

 years, very similar patterns were obtained. Indeed, the most prominent 

 basic features were found throughout the year. 



The Pacific Ocean. The surveys on the eastern side of the Philip- 

 pines in the open Pacific extended almost 300 miles offshore. It was 

 hoped, when the station pattern for these surveys was laid out, that 

 sections could be obtained across the northward deflection of the North 

 Equatorial Current as it impinges upon the Philippines. However, our 

 charts of dynamic topography show very little of this water movement. 

 Evidently the main northAvard deflection of the North Equatorial Cur- 

 rent occurs farther offshore. In the chart for the northeast monsoon 

 there is a wide area of practically no motion off the island of Samar. 

 Only at the outermost stations is there any indication of the northward 

 deflected Equatorial Current. 



There is a very strong northward close inshore along the coast of 

 northern Luzon, but this flow does not appear to be part of the de- 

 flected North Equatorial Current but rather is the western side of a 

 good clockwise eddy. To the northeast of this eddy there is a strong 

 flow with a northwest set which probably represents the edge of the 

 deflected equatorial water as it sweeps toward the island of Formosa. 

 Whether the great eddy east of northern Luzon is permanent or not 

 cannot be determined by our investigations as the October survey in the 

 Pacific did not extend this far north. This survey as far as it goes shows 

 no general northward movement within 300 miles of the coast. 



The southward deflected water of the North Equatorial Current 

 flows much closer inshore than that of the northern branch of that 

 current. Schott (1939) indicated a line of divergence between the two 

 branches at about latitude 11° to 12° north at longitude 130° east. 

 From this point the line of divergence turned northward to end at San 

 Bernardino Strait between the islands of Luzon and Samar. In his 

 charts this line of divergence is approximately the same during winter 

 and summer. 



Our calculated currents are in line with those of Schott. In the 

 northeast monsoon survey the line of divergence at longitude 130° east 

 is at latitude 12° north. South of this the water flows toward the island 

 of Mindanao and turns sharply south. Part of this water hugs the 

 coast of Mindanao and flows as a sU'ong current into the Celebes Sea. 

 However, all along the eastern edge of this current water is deflected 

 back to join the Equatorial Counter Current. From latitude 8° north 



