58 



Hydrography of the Stream 



current is sensible even at a depth of 1000 m. More recent crossings by 

 Worthington, in 1954 and 1955, indicate that the current may be appre- 

 ciable even at the bottom. 



VELOCITY SECTIONS BY DIRECT MEASUREMENT 



The only direct measurements of velocity at various depths thus far re- 

 corded are those made on a six-day cruise of the Bear and the Caryn in 

 July, 1952. The measurements were taken in a crest of a meander near Cape 



60° 



60° 

 •F 



Fig. 35. Bathypitotmeter measurements of current at two stations in the 

 Gulf Stream. The soUd black circles indicate velocity; the open circles, tem- 

 perature. Both series of bathypitotmeter soundings, BP V and BP VI, were 

 made in the left-hand edge of the warm core, in the part of the Stream having 

 the highest velocity, with the ship hove to and drifting with the current, and 

 were obtained by Dr Willom Malkus in Jvine, 1952. 



Hatteras. Vertical velocity profiles made by the Malkus bathypitotmeter 

 are shown in fig. 35. The northernmost station was made on the northern 

 edge of the Stream ; the other station shown was very close to the center of 

 the Stream. The Watson propeller-tjrpe meter was also used and showed 

 little variation of direction with depth. In general, there does not appear 

 to be any great discrepancy between these velocities and the computed 



