26 



of 750 decibars prevails, 

 manner and 



Other verticals are computed in a like 



which represents the value of the force tending to produce acceleration 

 of the water particles in the plane of the closed rectangular curve 

 ABDC. The direction in which the force tends to act may be deter- 



.2 "3 

 > ^ 



S "3 

 § n 



'& m 



C3 ■^ 

 O 'o 

 J2 a 



s ^ 



'O Si LI 

 o § « 





a 



mined by the relative values of v, the water being forced upwards most 

 pronouncedly at that vertical where the values of v are a maximum. 

 It is customary and of assistance in dynamic investigation of an ocean 

 mass to represent the distribution of specific volume, as found by act- 

 ual observations, graphically in vertical projection, the pressure in 

 decibars being sho%vn as orcUnates in the graph. Figure 10 includes a 

 line of stations, 201 to 206, taken from the records of the International 

 Ice Patrol, and furnishes an example of such a method of illustration. 



