106 



Section II: A cold surface layer 125 meters in tliickness spread out 

 from the edge for a distance of 75 miles. The corresponding profile 

 anomaly of specific volume, Figure 32, indicates a much steeper 

 slope to the isosteres on the offshore side of the density wall than on 

 the inshore. 



Section III: No water colder than 0° C. was found at the Tail on 

 April 29, despite the fact that water colder than zero was then 



STp>rrfO/^S 



Fig. 47.— Distribution of temperature and salinity 



bathing the slope farther to the northwest. The coldest water at 

 the Tail, 1°, then took the form of a closed core at a depth of 50 to 100 

 meters, situated about 45 miles off the slope. The warm salty water at 

 the outer end of this section is unmistakably that of the Gulf Stream. 

 The density wall, as shown by Figure 34, page 95, was then well devel- 

 oped located near station 569, 45 miles offshore from the Tail. A com- 

 parison of Figures 33 and 34, page 95, indicates that the density wall 



