APPENDIX A: SURVEY DATA 



1. Contour diagrams constructed from the bathymetric survey data are 

 presented in this appendix. The profile lines surveyed are identified on each 

 diagram. Contours are in half meters referenced to National Geodetic Vertical 

 Datum (NGVD) . The distance offshore is referenced to the Field Research 

 Facility (FRF) monumentation baseline behind the dune. 



2. Change in FRF bathymetry diagrams constructed by contouring the dif- 

 ference between two contour diagrams are also presented with contour intervals 

 of 0.25 m. Wide contour lines show areas of erosion. Other areas correspond 

 to areas of accretion. Although these change diagrams are based on consider- 

 able interpolation of the original survey data, they do facilitate comparison 

 of the contour diagrams . 



Al 



