2 Profile Data 



The data in this report were collected along the four profile lines shown in Figure 3 (lines 

 58, 62, 188, and 190). Table I summarizes the location of these lines and the data contained 

 in this report. The profiles extend from the baseline to a depth of approximately 9 m (about 

 900 m offshore). The baseline is a reference line behind the dune system that runs nearly 

 parallel to the shoreline. Elevation is referenced to the 1929 National Geodetic Vertical 

 Datum (NGVD) using third-order survey control. 



The four profile lines were surveyed approximately biweekly. In addition, the bathymetry 

 surrounding the FRF was surveyed monthly, but these data are not included in this report. 

 Additional surveys were added to cover significant storms and in support of special 

 experiments such as DUCK85 and SUPERDUCK (Birkemeier et al. 1989, Crowson et al. 

 1988, Kraus, Gingerich, and Rosati 1989). The special experiment data are included at the 

 end of the table of profile data (Appendix B). These data generally include almost daily 

 surveys of lines 58 and 62, but extend only 350-500 m offshore. 



The data for each profile line are a series of distance-elevation pairs measured in two 

 parts: dune and beach-nearshore. The dune portion of the profile extends from behind the 

 dune (about 46 m from the baseline) to the toe of the dune (about 76 m from the baseline). 

 The dune survey was accomplished with the use of a reflecting prism mounted on a fixed 

 height rod which was moved across the dune and stopped at regular intervals and breaks in 

 slope. The dune portion of the profile was surveyed at the same time as the beach-nearshore 

 portion until August 21, 1985. Since the surveyor did not always follow the same transect or 

 survey the same points, the data showed significant dune change even though the dune was 

 well vegetated and stable. Therefore, the dune portion of the profiles has been surveyed 

 seasonally since September 6, 1985 to minimize discrepancies due to the dune surveys. It is 

 noted that care must be taken in the interpretation of the dune portion of the profile change. 



Table 1 









Summary of Profile Data 











Distance along 



Distance from 









Profile 



FRF Baseline 



FRF Pier 



Latitude 



Longitude 



Number of 



Line 



m 



m 



at the Baseline 



at the Baseline 



Surveys 



58 



1097.31 



580.64 



36 IV 13.200" N 



75 45' 12.557" W 



211 



62 



1005.84 



489.21 



36 11' 10.380" N 



75 45' 11.417" W 



221 



188 



0.00 



-516.63 



36 10' 39.369" N 



75 44' 58.882" W 



170 



190 



-91.40 



-608.07 



36 10' 36.550" N 



75 44' 57.743" W 



166 



Chapter 2 Profile Data 



