BIGELOW: COAST WATER EXPLORATION OF 1913. 



229 



ranging from .14 knot to .5 knot, greatest when the flow was south- 

 westerly and northwesterly. The total drift was about 1 knot to- 

 ward the northwest. These three sets were planned to cover the last 

 half of the ebb, and the first half of the flood. But the observations 

 show that the flood current had begun to run one to two hours earlier 

 than the time of low tide at Barnegat. Hence, the set must have been 

 confined to the flood, and therefore can not show whether there was 

 any dominant drift. To remedy this defect it would have been 

 necessary to continue the set for six hours more, but this was impracti- 

 cable, owing to a sudden squall. Consequently a third set of current 

 measurements was made the next dav at Station 10074, so timed as to 



3 P.,Vi. 



■■■,3 P.M. 



Fig. 66. — Surface ciorrent , and bottom current. .... at Station 



10074, for each hour from 8 a.m. to 3 p.m., July 22. 2.25 cm. = 1 sea mile. 



cover the last of the flood and most of the ebb (Fig. 66). The surface 

 current at Station 10074 set westerly for the first two hours, i. e., 

 during the last of the flood. It then veered gradually through north- 

 west, north, and northeast to east, in which direction it was running 

 with a velocity of .3 knot at the end of the set. The velocities were .6 

 knot for the first two hours; .1 knot to .4 knot after that. The total 

 net drift was about 1.5 knot to the northwest. 



The bottom readings were less satisfactory than those on the surface, 

 because of the weakness of the current. In general the flow was 

 toward the south and south-southeast, varying irregularly between 



