is about 1,010 feet (308 meters) and the deck elevation varies from about 

 13 feet (4.0 meters) above MWL at station 22 to 24 feet (7.3 meters) above 

 MWL at station 1010. 



Beach and nearshore profiles from the beginning and end of the two data 

 collections are shown in Figures 3 and 4. The profiles for both localities 

 indicate that during data collection, there was relatively little sand 

 movement on the major longshore bar and the beach accreted. 



The, profile data for Jennette's Pier were obtained from profiles made 

 by Louisiana State University (LSU) Coastal Studies Institute, Baton Rouge, 

 Louisiana (Dolan, Perm, and McArthur, 1969) . The profile data from City 

 Pier were obtained by lead- line soundings from surveyed elevations on the 

 pier deck. Local water depths were obtained from tide tables (U.S. Coast 

 and Geodetic Survey, 1963, 1964) for Jennette's Pier and from a tide pre- 

 diction program at the Coastal Engineering Research Center (CERC) for the 

 Steel Pier at Atlantic City, which is 3 miles northeast of City Pier. 

 Depth data, profile data, and tide data are included in Appendixes A, B, 

 and C, respectively. 



2. Pump Sampler . 



Pump-sampling systems have a long history of use in river sampling 

 (U.S. Inter-Agency Committee on Water Resources, 1941, 1952, 1962; 

 Witzigman, 1963). 



The pump sampler used in the littoral zone to obtain the data in this 

 report is described by Fairchild (1965) . The basic instrument consists of 

 an intake nozzle (0.5-inch (1.27 centimeters) inside diameter) on a boom- 

 mounted telescoping support pipe, a pump, and a settling tank (Fig. 5). 

 Sediment suspensions are collected by placing the intake nozzle in the 

 water and continuously pumping out (for about 3 minutes) a water-sediment 

 mixture. This mixture is decanted and weighed to produce a suspended- 

 sediment concentration. For field use, the system is mounted on a tractor 

 and is designed to be operated from fishing piers or other platforms less 

 than 20 feet above water. The field instrument has also been used in CERC's 

 large wave tank (Monroe, 1966) . 



The pump system described by Fairchild (1965) is an outgrowth of lab- 

 oratory experiments in measuring suspended sediments (Watts, 1953; Fairchild, 

 1956) . More recent efforts in measuring wave-induced suspended-sediment 

 concentrations have emphasized electronic instruments (Brenninkmeyer, 1975; 

 Locher, Glover, and Nakato, 1976) . 



a. Nozzle Orientation . Nozzle orientation is important in the oper- 

 ation of the pump sampler in a wave-induced oscillating flow. If the 

 nozzle axis is horizontal and parallel with the direction of wave travel, 

 the axis is pointed into the flow part of the time and with the flow the 

 remainder of the time. If the axis is not horizontal, the sample is drawn 

 from elevations above or below the nozzle mouth, depending on whether the 

 axis is pointed up or down. The nozzle orientation with the least apparent 



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