NO. 62 - November 1954 



II-C "Restudy of Test - Shore Nourishment by Offshore Deposition 

 of Sand, Long Branch, New Jersey" by Robert L. Harris 



New surveys of offshore stockpile deposit area and 

 associated shore region for tests previously described 

 in Technical Memorandum No. 17 are analyzed and results 

 presented. New measurements and analysis substantiate 

 original findings that there is no evidence that material 

 moved onshore from the stockpile or that the shore was 

 benefitted by the offshore deposit. 



NO. 63 - September 1955 



I-A "A Study of Sediment Sorting by Waves Shoaling on a Plane 

 C Beach" by Arthur T. Ippen and Peter S. Eagleson 



This report presents results of theoretical and experi- 

 mental investigation into the mechanics of processes by 

 which beach sediments are sorted selectively when acted 

 upon by shoaling waves. Net sediment motion is found 

 to be due essentially 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 trjuisport velocity and approached 

 it as the fall velocity of the particles became negli- 

 gible. A theoretical analysis is presented which yields 

 a general functional equation for net particle velocities. 



NO. 64 - October 1955 



I-A "Laboratory Data on Wave Run-up and Overtopping on Shore 

 E Structures" by Thorndike Saville, Jr. 



Experimental data from scale model laboratory tests 

 are presented in tabular form on wave run-up 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 shewing 

 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, run-up and over- 

 topping are presented as prototype equivalents. 



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