86 



from the eastward south of the end of Reykjanes Ridge. In figure 41 

 we see tlie continuation of this southward flow of the deep water past 

 Flemish Cap and continuing as far as latitude 40° N., the southern 

 limit of the survey. Most of the flow continues close in to the edge 

 of the Grand Banks but some of it travels more directly southward 

 along the forty-first meridian, being separated from the major portion 



Figure 41— Dynamic current map at 3,500 relative to 2,000 decibars. Isobaths represent differences ini 

 anomaly of dynamic iieight expressed in centimeters. From data collected on post-season cruise, Junel 

 21-July"l2, 1937. 



by a whorl which is rouglily concentric with the bathymetric depres-l 

 sion at about 44° N., 42° W. I 



The criterion of least variability in horizontal gradients of anomaly| 

 of specific volume, which originally prompted the selection of the 2,000t 

 decibar surface as a reference level, in itself means only the most 

 nearly uniform velocity. It was assumed that this velocity was zero. 

 Although such an assumption is considered reasonable, all available 



