952 



BULLETIN OF THE BUREAU OE FISHERIES 



Relative velocities and directions of ike currents in Massachusetts Bay, "Fish Hawk'\ stations, June 16 



and 17, 19SB, calculated by R. Parmenter 



SECTION I 



STATI0N3 35 TO 32, DISTANCE, 37 KILOMETERS 



. 

 10. 

 20. 

 40. 

 60. 



7.74 

 3.91 



(0 



.76 



Southeast. 



Do. 



Do. 

 Northwest. 



SECTION V 



STATIONS 30 to 31. DISTANCE, 15 KILOMBTEBS 



6.94 



4.18 



1.62 



.13 



(■) 



Southwest. 

 Do. 

 Do. 

 Do. 



STATIONS 31 to 32. DISTANCE, 15 KILOHETEBS 



STATIONS 32 to 33. DISTANCE, 16 KILOMETERS 



STATIONS 33 to 34. DISTANCE, 15 KILOMETERS 



1.63 

 2.61 

 2.31 



(') 



Northeast. 

 Do. 

 Do. 



SECTION VI 



STATIONS 4 to 6A. DISTANCE, 18 KILOMETERS 



'Assumed stationary. 

 ' Negligible. 



With the entire column of water on the whole lightest (specific volume greatest) 

 along shore and heaviest (specific volume smallest) off the mouth of the bay at the 

 time, the direction of the gradient drift was clearly anticlockwise around the bay 

 and outward past the tip of Cape Cod (fig. 199), but also with a southerly component 

 crossing the mouth of the bay more directly from north to south. A pool of low 

 density in Cape Cod Bay must have tended to produce a subsidiary clockwise eddy 

 occupying most of the area between the Plymouth shore and Cape Cod. 



The calculated directions and velocities also show a second but smaller eddy of 

 the same sort centering over the southwestern edge of Stellwagen Bank, though this 

 would not appear from the distribution of density at .the surface. 



