PROCEEDINGS 515 



November 21, 1953 



Session resumed at 9:13 A.M. 



Papers read and discussions that followed; 



17. "Submarine Canyon Investigations" by Francis P. Shepard, 

 Scripps Institution of Oceanography, University of California, La Jolla, 

 CaHfornia, U.S.A. Read by Dr. Dietz. 



18. "Surface Temperature and Salinity in the Southwest Pacific 

 Ocean" by D. M. Garner, Oceanographic Observatory, Department of 

 Scientific and Industrial Research, Wellington, New Zealand. Read by 

 Dr. Rochford. With slides. 



Discussion 

 Uda— What would you call the southward current east of New Zealand? 

 Rochford— I do not know of the existence of one, as verified by the 



isotherms. 

 Uda— Can there not be one due to upwelling? 

 Rochford— I don't think so. 



19. "Secular Trends at East Australian Coastal Stations: 1942-1952" 

 by D. J. Rochford, Marine Biological Laboratory, Cronulla, N. S. W., 

 Australia. Read by the author. With slides. 



Discussion 

 Uda— Is there any influence of the flow of Arctic Water mass to increase 



the nutrients in Australian coastal waters? 

 Rochford— Recent discoveries in the region close by suggest there isn't 



very much. 

 (Dr. Rochford exhibited an apparatus for hydrological observations). 



20. "Recent Developments in Tidal and Tidal Current Measure- 

 ments" by U. S. Coast and Geodetic Survey. Read by Capt. Andres O. 

 Hizon, Director, Bureau of Coast and Geodetic Survey, Philippines. 

 With charts. 



Discussion 



Dietz— Do you have these instruments described in the paper in your 

 country? 



Hizon— No. 



TuLLY— Would there be any trouble in the buoy due to oscillations and 

 other effects? 



Hizon— I haven't had the opportunity to work on these instruments as 

 yet, but I have read that the magnetic system is statically and dy- 

 namically balanced. There is also a great tampering effect. 



