study has been found also by Pritchard and Carpenter (1960) in some of 
their experiments with continuous dye releases in waters influenced by 
currents. Figure 9 is a plot of dye concentration versus distance from 
the plume axis, showing lateral distribution of dye concentration. 
Clockwise Eddy Movement. The following quote is taken from the 
Virginia Beach, Virginia, Erosion Control Study (U. S. Congress, 1953, 
, LS)He 
"A review of Special Publication No. 162, titled ‘Tides 
and Currents in Chesapeake Bay and Tributaries’, prepared by 
the United States Coast and Geodetic Survey, indicates that 
the tidal flow through the Virginia Capes probably affects the 
erosion forces at work on the shore at Cape Henry and vicinity. 
The observations by that agency indicate that the tidal current 
strikes northwest and southeast on flood and ebb tides, respec- 
tively, when passing a line joining the two capes at the bay 
entrance; that about 10 to 12 miles east of this point the 
general trend of the current is due east; and that 18 to 20 
miles east of the bay entrance the trend of the current is 
toward the northeast. Coast and Geodetic Chart No. 1222 in- 
dicates that the deeper water in the bay entrance lies close 
in to the Cape Henry shore and follows a southeast course for 
4 or 5 miles past the cape. It is, therefore, apparent that 
the greater portion of the ebb flow through the Virginia capes, 
particularly that confined to the deeper water, initially strikes 
to the southeast, then recurves and eventually moves off to the 
northeast, due probably to the influence of the northward move- 
ment of the Gulf Stream and prevailing ocean currents. It is 
believed that a minor part of the ebb flow, particularly that 
moving over the shallow areas near the bay entrance, is diverted 
to the south by the prevailing northward oceanic currents, with 
a subsequent recurving clockwise movement. This clockwise eddy 
movement apparently extends approximately 3 to 4 miles south of 
Cape Henry and tends to partially explain the forces at work to 
preserve the northern section of the beach, where some accretion 
has been observed, as against the south end of the beach, where 
advanced erosion has occurred," 
Confirmation of this inferred clockwise eddy movement is apparent 
from (1) the nontidal current values (Figure 4) that indicate northerly 
water movements at the central Roberts Meter Station and (2) those drift 
bottle strandings from the Little Creek and Cape Henry release points 
(Figures 2 and 3), that are for bottles that had been out long enough to 
have come under the influence of the nontical drift. The inferred north- 
eastwardly recurving movement of the Chesapeake Bay outflow, however, has 
not been confirmed by other drift bottle studies in that area (Norcross 
et.al., 1962, Figure 1), a prevailing southerly drift having been observed 
whose velocity approximates 10 to 14 miles per day (Joseph et. al., 1960). 
