The 1 May 1990 data used FRF profile numbers, but the later data used a 
sequential numbering system primarily dictated by software restrictions. As 
can be seen in Figure A3 and the transects shown in Figure A4, the bottom 
580 m north of the pier (line 58), out to -13 m, is basically flat, while 516 m 
south of the pier (line 190), there are some interesting irregularities with cross- 
shore lengths of approximately 150 m, and vertical relief on the order of 1 m. 
Minigrid Surveys 
A series of 20 profile lines were surveyed every day during DELILAH 
beginning 1 October and continuing throughout the experiment. The lines 
were spaced approximately 25 m apart near the instruments and 50 m apart 
elsewhere. Profile lines, along with the locations of the nearshore instruments, 
are shown in Figure AS. All lines extended from the base of the dune to 
approximately 375 m offshore, except during the high wave period on 13 
October 1990. The dune section of each profile line was only surveyed at the 
beginning of the 
experiment. To provide 
continuity between 
surveys, the dune data 
points were 
automatically added to 
each survey. The 
surveys were sequential- 
ly numbered. Unlike 
the 13-m-deep survey, a 
median smooth was not 
“used to reduce the 
number of data points. 
Longshore, m 
Most of the changes 
which occurred resulted 
from the offshore 
movement of the inner 
bar. This can be seen 
in Figure A6, which 
over-plots all the 
surveys for profile line 
230, located just north 
of the cross-shore 
instrument line. The 
largest vertical changes 
occurred at 
approximately 160 m 
offshore and were Figure A5. DELILAH minigrid profile lines 
Cross—shore, m 
Appendix A Surveying 
Profile Line Numbers 
A7 
