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 metres 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 general areas of erosion. Other areas 

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

 considerable interpolation of the original survey data, they do facilitate 

 comparison of the contour diagrams. 



Al 



