change may represent the algebraic sum of erosion in one part of the 

 profile line and accretion on another part, as it often does. Only 

 in three poststorm, high surf, and high surge conditions (1 Julv 1975, 

 25 November 1975, and 10 April 1976) did a few of the surveys not 

 extended seaward all the way to the MSL datum, although they were 

 quite close. However, because of the location on the profile line 

 and the extent of the beach volume changes, discussed in detail in 

 Section V, these slightly shortened surveys did not influence the 

 volume computations to any great degree, nor the comparison of changes 

 between profile lines, nor the conclusions. 



5. Comparison of VIMS-CERC Surveys With Older Profile Data . 



This was accomplished by finding and using in the new surveys, 

 the exact profile pipes that were used in the older surveys (locations 

 8, 10, 12, 13, 14, 15, 16, 17, and 18) and using detailed descrip- 

 tions in the literature, field visits, informal correspondence with 

 the previous investigators and photographs (locations 1, 2, 3, 4, 

 and 5). The stakes at survey locations 7 and 11, which had been 

 surveyed by Goldsmith in 1972 to 1974, had been removed, so only 

 their approximate location (approximately 1 meter horizontally) could 

 be reoccupied and therefore, comparisons between the older and newer 

 survey data were not made for these two locations. 



For the locations precisely reoccupied (Goldsmith, Colonell, 

 and Turbide, 1972) , the computer program was modified to calculate 

 beach volume changes using the original survey data. Only the last 

 survey at each profile line was recalculated into the CERC format 

 to compare directly with the first VIMS-CERC survey. These data 

 were on the original punchcards generated by the previous investigators. 

 Since the survey techniques employed were the Schwartz one-man beach 

 profile technique and the Emery method, the accuracy of these older 

 data may be below CERC's standards. Also, since all the surveys did 

 not reach the same MLW datum as the later surveys, volume calculations 

 of the older data and comparisons between the newest surveys of the 

 previous investigator, and the oldest survey of this study did not 

 involve the same length of profile line. Despite these weaknesses in 

 the older data, it is interesting that the same erosion and accretion 

 trends exhibited in the newer VIMS-CERC survey computations are also 

 exhibited in the older data at the same survey locations. 



6. Statistical Beach Trend Analyses . 



Because of large fluctuations in volume changes between surveys at 

 each of the survey locations, it is often difficult to discern net 



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