166 



Thermohaline Features 



sections, but, because of vertical flow, we cannot expect the individual 

 transport per unit depth to be conserved over large areas. Thus, for 

 example, we may reasonably expect the vertically integrated transport 

 to the north across section 7 to be equal to that to the south across 

 section 3, because the Atlantic Ocean is essentially closed toward the 

 north. 



SE NE 



o2 DiO UZO LJSO 



TRiNSPOnrS IN MILLIONS OF M^/SEC 



N N N N N N 



T T' T' T^T^ 



TOTM. MERIdONAl. OtUAN WIND DRIFTS, EST 



Fig. 79. Geostrophic transport per unit depth, T{z, d), across various 

 sections of the Atlantic Ocean. The total transport across various latitude 

 circles due to Ekman wind drift alone is indicated at the lower right comer; 

 the depth distribution is estimated. Western boundary currents are the major 

 features in sections 6, 7, 8, 9, 10, 11, 12, and 15. The other sections represent 

 interior (or central) oceanic regions. 



The broad arrow-point symbol indicates the depth to which actual data 

 extend, below which the curve may be extrapolated; the long, flat rectangle 

 indicates the depth of the solid bottom. The stations used in the respective 

 sections were as follows (A = Atlantis ; C — Caryn; Ch = Challenger, 1932 cruises; 

 D = Discovery ; and M = Meteor): 



