STATION 

 52 



50 



48 



46 



44 



42 



40 



I I ' I I [ I I I I I M I I I I I I I I I M I I I I I I I I I I I I I I I I J I 



NET 4 (30XXX AND 56XXX) 

 SURFACE TOWS 



|]' 



c 



D-N 



NORTH EQUATORIAL CURRENT 



CURRENT BOUNDARY 



36 



34 



32 



30 



EQUATORIAL COUNTER CURRENT 



CURRENT BOUNDARY 



POSITION OF 

 MAXIMUM CONVERGENCE' 



13 



SOUTH EQUATORIAL CURRENT 



4.705 



EQUATORIAL DIVERGENCE 



LATITUDE 

 I9°N 



17° 



15° 



13° 



D-N - 



D-N - 

 .0911 



N 



I M I I M I I I I I I I I I I I I I I I I I I I I I I 



I I I I I I I I I I I I I I I I 



N-D 



9° 



7° 



l°N 

 Q 

 1° S 



3° 



4000 



3000 



2000 



1000 







010 



.020 



030 



040 



050 



060 °^^080°3° 



NUMBER PLANKTERS PER CU. METERS 



DISPLACEMENT VOL ML PER CU. METER 



FIG. 17 LATITUDINAL DISTRIBUTION OF ZOOPLANKTON ABUNDANCE. M/V HUGH M SMITH 

 CRUISE II STATIONS 30-53. CURRENT BOUNDARIES AND THE MAJOR SURFACE 

 DIVERGENCE AND CONVERGENCE ARE INDICATED. D AND N REPRESENT DAY 

 OR NIGHT HAULS. 



