sand size decreased from north to south at the three localities in this 

 study. 



Figure 19 indicates that this trend is not clearly evident on the 

 basis of individual sample means, and at profile line 2 of Atlantic City, 

 the trend appears to be opposite of the expected. However, when overall 

 averages are taken, the mean slope sand-size pairs for the three localities 

 are: Long Beach, 0.052 and 0.31 millimeter; Atlantic City, 0.028 and 0.28 

 millimeter; and Ludlam Island, 0.022 and 0.24 Tnillimeter. These averages 

 are well within the scatter of data on this relation, but generally fall 

 below the slope versus grain-size curve for west coast conditions rather 

 than the New Jersey conditions (U.S. Army, Corps of Engineers, Coastal 

 Engineering Research Center, 1975, p. 4-86). In part, the lack of a 

 clearer relation between size and slope may be due to the relatively small 

 range of sizes in these samples. 



V. DISCUSSION OF SAMPLE SET B 



1. Questions . 



The reason for collecting sample set B was to answer the following 

 questions evolved in the analysis of sample set A: 



a. IVhat is the longshore variation in sand size outside the profile 

 lines sampled in sample set A? 



b. Is the seaward decrease in size across Long Beach Island (which 

 is a highly developed beach with many groins) found immediately to the 

 north on Island Beach (which is a state park without structures)? 



c. What happens to the sand size in the summer months, for which in 

 sample set A lacks data? 



2. Longshore Variation . 



Figure 21 shows longshore variation in size for sample set B, in a 

 manner similar to Figure 15 for sample set A. The additional localities 

 in sample set B suggest that instead of a gradual southward decrease in 

 sand size along the New Jersey coast, there is a discontinuity in size 

 between Long Beach Island and Brigantine, i.e., near Little Egg Inlet. 

 This discontinuity in sand size matches a discontinuity in heavy minerals 

 at Little Egg Inlet found by McMaster (1954) . 



3. Seaward Variation . 



As shown by the data on Figure 22, the new data from Island Beach 

 confirm the trend found at neighboring Long Beach Island (Figs. 16 and 

 17)--sand size gets finer toward the surf zone. However, the tendency of 

 sample set A to get coarser in the seaward direction on Atlantic City and 

 Ludlam Island beaches is not as well supported by sample set B, although 



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