Analysis 
54. Mean sediment sizes were determined by visually estimating the size 
distribution of the sample by at least two analysts. Selected samples were 
sieved to be sure the analysts were not introducing a bias; comparisons were 
favorable. Size distributions presented in this report were based on sieved 
samples. The FRF sediment characteristics were summarized by contouring the 
mean grain size of the sand samples at 1/2-phi intervals. 
Photographic Data 
Aerial 
55. Quarterly aerial photographic missions were performed using a 9-in 
negative format mapping aerial camera capable of black/white and color photog- 
raphy. All coverage was at least 60 percent overlap, with flights flown as 
close as possible to low tide between 1000 and 1400 hours with less than 
10 percent cloud cover. 
56. The photographs obtained on 7 February, 11 May, and 27 October were 
concentrated near the FRF (Figure 5), while those obtained on 14 July also in- 
cluded coverage from Cape Henry, Va., to Cape Hatteras, N. C. 
Beach 
57. Daily color slides of the beach were taken using a 35mm camera from 
the same location on the pier looking north and south. The location from 
which each picture was taken as well as the date, time, and a brief descrip- 
tion of the picture were marked on the slides. An inventory is also 
maintained. 
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