T.M. No. 62 - November 1954 



Restudy of Test - Shore Nourishment by Offshore Deposition of Sand , 

 Long Branch, New Jersey by Robert L. Harris 



New surveys of offshore stocl<;p i I e deposit area and associated 

 shore region for tests previously described in BEB T.l^. No. 17 are 

 analyzed and results presented. New measurements and analysis sub- 

 stantiate original findings that there is no evidence that material 

 moved onshore from the stockpile or that the shore was benefited by 

 the offshore deposit. 



T.M. No. 63 - September 1955 



A Study of Sediment Sorting by Waves Shoaling on a Plane Beach 

 by Arthur T. Ippen and Peter S. Eagleson 



This report presents results of theoretical and experimental 

 investigation into the mechanics by which beach sediments are sorted 

 selectively by shoaling waves. Net sediment motion is essentially 

 due to inequality of hydrodynamic drag and particle weight with a 

 position of equality separating zones of net onshore and net offshore 

 motion. Net onshore particle velocities were found proportional to 

 the indicated mass transport velocity and approached it as the fall 

 velocity of the particles became negligible. A theoretical analysis 

 is presented which yields a general functional equation for net 

 particle velocities. 



T.M. No. 64 - October 1955 



Laboratory Data on Wave Run-up and Overtopping on Shore Structures 

 by Thorndike Saville, Jr. 



Experimental data from scale model laboratory tests are presented 

 in tabular form on wave runup values and rate of overtopping for a 

 number of different test conditions of wave characteristics, beach 

 slopes, and wall shape and height. Curves are also presented showing 

 relation of overtopping rate to elevation of wall crest for different 

 test conditions. For convenience in visualizing the quantitative 

 application of the data, wave characteristics, wall dimensions, runup 

 and overtopping are presented as prototype equivalents. 



T.M. No. 65 - October 1955 



Sand Variation at Point Reyes Beach, California by Parker D. Trask 

 and Charles A. Johnson 



Characteristics of the beach sands and their variability were 

 investigated by taking a series of samples during three periods: 

 June at the end of the winter season, October at the end of the 

 summer season, and February and March during the middle of the 



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