T.M. No. 22 - August 1967 



Dune Stabilization with Vegetation on the Outer Banks of North 

 Ca ro I i na by W. W. Woodhouse, Jr. and R. E. Hanes 



Shore and nursery experiments were conducted to develop an 

 accelerated and effective vegetation program for "growing" dunes. 

 Randomized blocks of plantings, with three replications, were used 

 in the experiments. Results of various methods of producing nursery 

 stock, transplanting and fertilization, are shown in figures, tables, 

 and photographs. The most practical and economical methods for each 

 step of the program are suggested. 



T.M. No. 25 - September 1967 



A l^odel Study of the Entrance Channel, Depoe Bay, Oregon 

 by John P. Ahrens 



A scale model study was conducted at CERC to determine if a 

 proposed widening of the entrance channel at Depoe Bay, Oregon, 

 would allow appreciably more wave energy to enter the harbor. A 

 linear, undistorted Froude Scale of I to 120 was used. The model 

 was constructed of mortar in a wave tank 72 feet long and 1.4 feet 

 wide. Ponding in the model bay due to extreme wave action exceeded 

 the equivalent of 5 feet prototype. The wave height transmission 

 coefficient for waves traveling into the bay ranged from greater 

 than 1.0 for long waves to less than 0.1 for short waves. 



T.M. No. 24 - October 1967 



Tables of the Statistical Distribution of Ocean Wave Forces and 

 Methods for Estimating Drag and Mass Coefficients by Lloyd J. Brown 

 and Leon E. Bergman 



This paper reviews the statistical distribution of ocean wave 

 forces and gives tables of the probability density and distribution 

 function of wave forces. A Gaussian sea surface is assumed. The 

 density and distribution function are shown to depend on a single 

 parameter a. The tables obviate the laborious numerical computations 

 required in previous studies. 



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