A 



T0-5B-I 



T'C. 



S /oo 



&.Cl/t 150 



c 



TO-58-1 97- 



Figure 6. --Vertical distributions of properties on cruise TO-58-1 along section A-A (see fig. 3); depth scale in m. 



The data in figure 9A could be interpreted 

 to mean that dynamic height anomalies were 

 lowest in the area between 14° and 15 oN. 

 and 950 and 96O30' W., i.e., about a degree 

 to the west of the area of lowest dynamic 

 height anomalies found in May and June 1958 

 (TO-58-1, fig. 4A). 



Figure 9B which shows the north-south 

 belt of cool surface water lying about 1 degree 

 further west than it does in figure 4B, is 

 consistent with figure 9A as interpreted above. 

 Other differences between figures 9B and 4B 

 are (a) the presence of the coldest water near 

 the coast and (b) the fact that the cool belt 

 runs offshore in a southeasterly direction at 

 its southern end, in figure 9B; (b) is con- 

 sistent with GEK observations south of 14° N. 

 between meridians 96° and 95° W. (fig, 9A), 

 which could mean anticlockwise flow around 

 the southern end of the ridge. 



Figure 10 shows the more numerous dis- 

 tributions available for part 3 of the cruise 

 (after the Tehuantepecer): they are (A) dy- 

 namic height anomalies and surface current 

 by GEK, (B) surface temperature, (C) surface 

 salinity, (D) surface oxygen, (E) phosphate 

 at 30 m., and (F) zooplankton. No micronekton 

 observations are given because micronekton 

 sampling on TO- 58-2 was experimental and 

 did not yield observations comparable with 

 those of the other cruises. The surface 

 chlorophyll a and productivity data are in 

 figure 5. 



Figure lOA is like figure 4 A in the way it 

 shows the north-south ridge and the high- 

 velocity clockwise eddy to the west of it, 

 and the GEK observations agree fairly well 

 with those of figure 4A at the same longi- 

 tudes. 



10 



