"• COBB 





SEAMOUNT 



Figure 7.— Volume transport in lO'^.Vsec., to 1,500 m., spring 1963. (The 183- and 1,829-m. 

 depth contours are shown.) 



and fall the zonal and meridional components 

 of Ekman Transport computed by Fof onoflf and 

 Ross (1961) appear to contribute only 0.01 x 

 lO^m.'/sec. and thu.s may be neglected. 



During spring the net transport of water 

 across each of the eight lines normal to the 

 coast was directed toward the north and aver- 

 aged approximately 2 x 10"m.^/sec. (fig. 7). 

 This estimate appeared to give considerable 

 credence to the existence of both the Davidson 

 Current and California Undercurrent. On the 

 other hand, the large northward flow of 5.3 

 X lO'm.' sec. off the coast of Washington was 

 part of an anticyclonic eddy ; only a very weak 

 net transport of less than 1 x 10'"'m^ sec con- 

 tinued northward across lat. 48" N. A rela- 

 tively large volume 6.7 x ICm.Vsec. entered 



the area from offshore, of which 4.1 x IC-m.V 

 sec. apparently flowed onshore across the Con- 

 tinental Slope where calculation of volume 

 transport to 1,500 m. is less meaningful. The 

 net northward transport increased to 3.7 x 10'' 

 m.' sec. across the northernmost line and had 

 the same direction and magnitude as that re- 

 ported by Bennett (1959) during August 1955 

 for the near-shore area between lat. 50° and 

 55° N., just north of this study area. 



During fall the greatest northward transport 

 again occurred off the northern coast of Van- 

 couver Island; no significant change appeared 

 in the volume of water flowing northward past 

 Cape Cook (fig. 8). Off the Washington coast 

 the net transport was again about 1 x 10''m.V 

 sec, but the direction reversed across succes- 



230 



U.S. FISH AND WILDLIFE SERVICE 



