provide basic data on wave action, tides and tidal currents, and wind 

 action for comparison with those processes acting on other Massachusetts 

 beaches previously studied. 



66. HERRON, W.J., Jr., and HARRIS, R.L., "New Methods of Conserving 

 Beach Sand," Shove and Beach, Vol. 30, No. 1, Apr. 1962, pp. 34-37. 



Keywords: Accretion, California (Newport Beach), Detached breakwater. 

 Littoral transport 



Since the 1940's, the beaches between the Surf side Beach Colony and 

 Newport submarine canyon have experienced progressive erosion caused by 

 the loss of sand supply to the beach because of flood control reservoirs 

 and the improper placement of harbor structures on the shore. The most 

 economical proposed solution for this problem would require construction 

 of a 2,600-foot-long detached breakwater to act as a sand trap on the 

 24-foot contour immediately updrift of the Newport canyon. At 5-year 

 intervals, 1,500,000 cubic yards would be dredged from this sand trap 

 and backpassed to renourish updrift beaches. 



67. HERRON, W.J., Jr., and HARRIS, R.L., "Littoral Bypassing and Beach 

 Restoration in the Vicinity of Port Hueneme, California," Ppooeedings 



of the 10th Conference on Coastal Engineering , American Society of 

 Civil Engineers, Vol. 1, 1966, pp. 651-675. 



Keywords: Accretion, Armor stability, California (Channel Islands), 



Detached breakwater, Downdrift beaches. Littoral transport. 

 Rubble mound. Structural dimensions. Wave diffraction 



The construction of Port Hueneme Harbor, California, in 1940, re^^ 

 suited in an average annual erosion of 1,200,000 cubic yards from the 

 shoreline downcoast of the harbor. The cause was diversion by the north 

 jetty of the harbor of littoral sand movement into the Hueneme canyon. 

 A sand-bypass system was established in 1960-61 by the construction, 1 

 mile upcoast , of Channel Islands Harbor fronted by a 2,300-foot-long 

 offshore breakwater located in the 30-foot depth contour. The break- 

 water serves a dual function of sheltering the harbor entrance and 

 acting as a littoral sand trap. Three cycles of biennial littoral sand 

 bypassing were successfully completed. Comparison of the design of the 

 structure with the impounding characteristics experienced during the 

 three cycles indicates that the dimensions and capacity of a sand trap 

 formed by an offshore breakwater can be based on the diffraction patterns 

 of prevailing wave trains at the two ends of the structure and is inde- 

 pendent of the depth and dimensions of the entrapment area. 



68. HIRANANDANI, M.G., COLE, C.V., and PENDSE , Y.D. , "Strengthening 

 Breakwater at Visakhapatnam," Journal of the Waterways and Harbors 

 Division, Vol. 88, No. WW3, Aug. 1962, pp. 139-158. Discussions 

 by R.Q. Palmer, May 1963, pp. 93-96; L. Barailler and L. Greslou, 

 May 1963, pp. 96-98. 



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