BEACH EROSION LITERATURE 



There are listed below some recent acquisitions of the Board's 

 library which are considered to be of general interest., Copies of 

 these, publications can be obtained on 30-day loan by interested 

 official agencies. 



"An Investigation of the Energy Dissipated in a Surface Roller," 

 G. A. Oosterholt, Appl. Sci. Res., Vol. Al, pp. 107-130. 



This paper deals with the problem of the dissipation of 

 energy in hydraulic jumps. Description is given of experiments 

 and computations to determine the quantity of energy converte'd 

 into heat per cubic centimeter and per second in a surface 

 roller. The results probably can be made to apply to other 

 cases of similar flow, such as eddies and wakes. 



"Diffraction of Water Waves by Breakwaters," J. A. Putman and R. S. 

 . Arthur, Scripps Institution of Oceanography, Wave Report No. 67. 



Application is made of a solution of the water-wave diffraction 

 problem of Penny and Price to diffraction by a semi-infinite 

 impermeable breakwater. Approximations are introduced to 

 simplify application of the theory. Comparison of complete and 

 simplified solutions is made with results obtained from a 

 laboratory investigation. Best agreement between theory and 

 experiment occurred in the lee of the breakwater. The simpli- 

 fied solution is shown to be adequate foremost practical 

 applications. 



"Coastal Water Circulation off the East Coast of the United States 

 between Cape Hatteras and Florida," D. F. Bumpus and T. J. Wehe, 

 Technical Report No. 16 on the Hydrography of the Western Atlantic, 

 Woods Hole Oceanographic Institution, January 1949, 9 pp., diagrams. 



This paper discusses water circulation in the area inshore of the 

 Gulf Stream, with information on surface temperature, salinity 

 and density. Within this area a theory is postulated of one 

 elongated cyclonic movement and possibly several smaller eddies 

 occupying the coastal shelf. 



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