(b) Long-term changes at each survey location from data from earlier 

 studies and monthly surveys during this study. 



(c) Character of beach behavior in the study area from ground and 

 aerial reconnaissance and survey data. 



(d) Character of beach behavior in Currituck County, North Carolina 

 from quarterly ground reconnaissance. 



(e) Wave climate in study area from visual wave observations. 



(f) Comparison of long- and short-term wave and beach conditions 

 from survey data and visual wave data. 



(g) Comparison of beach response in natural, residential, military, 

 and commercial use areas from survey data. 



Special attention was paid to the variations in cultural usage and 

 to the location of the focus of longshore transport reversal as possible 

 causes of the differing beach response. Although this 1974-76 interval 

 was a time of relatively low storm-induced beach erosion (discussed in 

 Section IV), there were storm events of sufficient intensity (App. D) 

 as to clearly delineate differing erosional responses between survey 

 locations. The interpretation of these variations is assisted by con- 

 comitant shoreline wave observations, and ground and aerial photos. 

 Probably the most important purpose is to relate the VIMS-CERC profile 

 lines (1974-76) to the older survey data in order to delineate the 

 long-term trends (by surveying standards) of between 4 and 18 years at 

 14 of these locations (App. C) since such lengthy survey histories 

 are relatively rare in the United States. Further, the application 

 of standard statistics to test and delineate these beach trends is 

 illustrated. 



3. Engineering and Scientific Usefulness . 



The two most immediate applications of these data and analyses are 

 to furnish the Norfolk District with basic information that extends 

 aerially beyond the Virginia Beach area undergoing extensive sand 

 nourishment, and to furnish CERC with "base-line" data for future 

 studies on the processes in the immediate vicinity of the nearly com- 

 pleted CERC Field Research Facility, Duck, North Carolina. For 

 example, documentation of beach changes to either side of the Virginia 

 Beach commercial beaches would aid in the planning of projects involving 

 the pumping of sand from the south side of Rudee Inlet onto the commer- 

 cial beaches. With respect to the CERC Field Research Facility, 

 documentation of characteristics and changes on the beaches north of 



