(-75.5 cm) relative to MSL at the study site so that all elevations can 

 be cross-referenced to MLLW if necessary. 



At the time of the actual surveys data were recorded on field data 

 sheets designed to accommodate the measurements acquired from the land 

 and offshore surveys. The land survey data consisted of distances meas- 

 ured from the bench mark and rod readings measured with a transit. Data 

 reduction for the land survey simply involved calculating the elevations 

 relative to MSL datum. In addition, the fathometer data were compared 

 to lead line and depth gage soundings and the reference rod measure- 

 ments to verify their accuracy at specific stations on each range line. 



The corrected profile data were then recorded on standard BEP 

 scanning forms (CERC Form No. 60, 4 August 69 and CERC Form No. 83-71, 

 26 May 71) for transmittal to CERC. At CERC these data were then 

 plotted for their files using a line printer. The distance-elevation 

 pairs for each survey point are given in Appendix B. 



Plotting of the profile data for study at Scripps was done with 

 the use of a Burroughs 6700 computer and its 11-inch x-y plotter. 

 A short ALGOL computer program was devised to produce a computer-plotted 

 profile from the reduced survey data. These data were punched on IBM 

 cards for computer input. The program output is an ink plot of the beach 

 profile at a scale of 1 inch = 10 feet for elevation and 1 inch = 100 feet 

 for distance on one set of axes with an equivalent scale in the metric 

 system on the other axes . Plotted beach profiles for the surveys are 

 compiled in Appendix F. 



Appendix G gives a description and listing of the beach profile 

 plotting computer program. Use of the computer to plot the beach pro- 

 files was found to accelerate the process of making comparisons between 

 different surveys since any two sets of survey data can quickly be 

 processed by the computer. Also, the IBM card files of the surveys 

 have been found to be a good reference library for making additional 

 copies of any specific survey or combination of surveys. 



Visual wave observations were recorded on a standard BEP scanning 

 form (CERC FORM No. 120-72, 10 May 72) at the time of the observation 

 and simply forwarded to CERC for their files. Each visual wave observ- 

 ation was accompanied by a color transparency photograph taken as des- 

 cribed from the top of the sea cliff. These photographs were included 

 as part of the wave observations to be kept on file at CERC. Sediment 

 analysis data for samples collected from Torrey Pines Beach are shown in 

 Appendix 11. v _ BEAQ1 pR0FILE CHANGES 



Beach profile measurements made at Torrey Pines Beach have been 

 compared from survey to survey and on a seasonal basis over the 23-month 

 period of the study. The most significant changes in profile configur- 

 ation occur seasonally so that the results of these measurements are 

 presented for seasonal time intervals. 



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