Figure 7. Sea-surface djTiamic topography (dynamic meters) relative to 1000 decibars, 14—21 May 1968. Arrows 

 denote sea-surface dynamic heights at intervals of 0.02 dynamic meters. Staffs of arrows are drawn per- 

 pendicular to imaginary line segments connecting adjacent stations; heads of arrows indicate direction of 

 geostrophic current. Nomograph for obtaining geostrophic speed when entering with distance between 0.02 

 dynamic-meter contours assumes latitude of 45°. 



14 



