T.M. No. 19 - December 1966 



Budget of Littoral Sands in the Vicinity of Point Arguello , 

 Ca i i fornia by A. J. Bowen and D. L. Inman 



Shows the results of a detailed analysis of the littoral pro- 

 cesses affecting the California coast between Pismo Beach and Santa 

 Barbara. The method involves the concept of a sand budget based on 

 transport rates of significant littoral processes. Each process is 

 examined to assess the sedimentary contributions (credits) and losses 

 (debits). To balance sediment transports, the region is subdivided 

 into five cells, with boundaries at positions where longshore trans- 

 port of sand has been estimated. Using basic data, the authors have 

 determined a quantitative transport rate for each process in each 

 cell. Results are shown in graphic and tabular form. 



T.M. No. 20 - May 1967 



Behavior of Beach Fill and Borrow Area at Sherwood Island State 

 Park, Westport, Connecticut by Will iam H. Vesper 



In 1957, to restore and stabilize the beach, sand was pumped to 

 the shore from an offshore borrow area. Training wails were con- 

 structed to confine the inlet at the east end, and a groin was built 

 at the west end of the park. The entire beach was widened and raised, 

 and an extra amount of sand was placed on Sherwood Point to act as a 

 feeder beach. Surveys in 1962 showed that losses from the tidal zone 

 were major and indicated that further maintenance is required. Data, 

 in graphic form, show comparative beach profiles and changes in 

 shoreline. Tables show quantitative volume changes and sand sample 

 data. Initial and annual cost figures are given. 



T.M. No. 21 - August 1967 



A Mul ti-Purpose Data Acquisition System for Instrumentation of 

 the Nearshore Environment by W. A. Koontz and D. L. Inman 



A data acquisition system, using digital techniques, has been de- 

 signed and tested. Using modern computer techniques, it acquires and 

 analyzes instantaneous-synoptic measurements of the nearshore environ- 

 ment. Sensors include: a digital wave gage with self-contained logic 

 circuitry; a vi brat ing-w ire transducer to measure bottom pressures; 

 a Savonius current meter; and a photography technique for estimating 

 the density of suspended sediments. 



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