98 



PROCESSING OCEANOGRAPHIC DATA 

 Table Xn.— CURRENT FACTOR, c, FOR VALUES OF LATITUDE 



1 



2u sin 010' 



where 



u = angular velocity of earth's rotation, equal to 0.729X 10~* radians per second, 

 (^ = latitude in degrees. 



Example: 



Given, latitude of 30° N. 



From table XII, c = 0.1371. 

 Current factor, c, is used in the following equation to obtain current velocity. 



V = 



c(DA-DB)(.n) 



where 



■1^= average current velocity normal to a line between stations A and B, 

 D^ — DB=dynamic height difference between stations A and B, 

 L = distance between stations A and B, 



n = unit conversion factor, dependent upon the units of the other variables. If units of V, Da. — Db, 

 and L are as shown, then n will have the indicated values. 



