Section 9. REPRINT PAPERS OF THE COASTAL ENGINEERING RESEARCH CENTER 



R. 1-66 - February 1966 



An Ocean Wave Direction Gage by Leo C. Will iams 



This paper outlines laboratory and short-term field testing of 

 the use of an ultrasonic flow device for determining the direction 

 of approach of ocean waves. The ultrasonic flowmeter measures the 

 bidirectional flow of water past a pair of sensing elements. The 

 direction of flow sensing is in line with the sensing elements. The 

 output of the ultrasonic flowmeter is fed to a strip chart recorder 

 which indicates the relative magnitude of the water flow. Thus, 

 alignment of the water flowmeter into an ocean wave train may provide 

 the direction of approach of the wave. 



R. 2-66 - February 1966 



Breakwaters with Vertical and Sloping Faces 



by Thorndike Sayille, Jr., Wm. J. Garcia, Jr., and Charles E. Lee 



This paper summarizes advances in breakwater design and dis- 

 cusses United States practice for determining design criteria. 

 Considers design waves, underwater topography, foundation problems, 

 and harbor structures. In addition to the list of references, a 

 selected bibliography is presented. 



R. 5-66 - February 1966 



Factors Affecting Beach Nourishment Requirements, Presque Isle 

 Peninsula, Erie, Pennsylvania by Dennis ^L Berg 



Analysis of available data indicates apparent correlation of 

 initial high erosion rates of placed beach fill with sand size 

 characteristics of the fill and the mean level of Lake Erie for the 

 period the measured losses occurred. Although erosion of the fill 

 has been more than anticipated, the data indicate that nourishment 

 requirements for replenishing the beaches should decrease as the 

 beach profiles become readjusted through selective sorting of the 

 fill by wave forces. 



R. 4-66 - June 1966 



A Tractor-Mounted" Suspended-Sand Sampler by John C. Fa i rchi I d 



Describes the design of a tractor-mounted sampler and its use 

 in field operations. The apparatus has been used at Nags Head, 

 North Carolina and Ventnor, New Jersey. 



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