Volume 10 (Continued) 



Sediment Motion at the Vicinity of a Littoral Barrier 



Laboratory model study to investigate the possible mode of 

 sediment transportation at the vicinity of a littoral barrier such 

 as a projecting cliffed headland. Sand transport, rate for this con- 

 dition is measured and compared to that for a normal sand beach, and 

 model scale effects discussed. Written by Ning Chien, University 

 of Ca I ifornia. 



An Electronic Gage for [Measurement of Small Waves and Ripples 



Detailed descriptions of circuits and elements of the gage, 

 and its calibration, are presented. It is not necessary for this 

 gage to touch the water surface. Its action depends on the varia- 

 tion of dielectrical capacity in the air space between the water 

 surface and a probe. Written by Francis W. Kellum, Beach Erosion 

 Board staff. 



Development of a Suspended Sediment Sampler for Laboratory Use 

 Under Wave Action 



Factors affecting accuracy of sampling of suspended sediment 

 load are investigated. Equipment suitable for sampling suspended 

 sediment load in laboratory tanks is described and procedures for 

 its use discussed. Written by John C. Fairchild, Beach Erosion 

 Board staff. 



Volume II - July 1957 



Model Tests of Wave Run-up for Hurricane Protection Project 



Wave runup data is evaluated for certain beach and dune con- 

 ditions from small-scale investigations in a laboratory wave tank. 

 A feasible method for protecting coastal areas from hurricane 

 damage is the restoration or creation of a dune barrier by sand 

 fill. Written by Rudolph P. Savage, Beach Erosion Board staff. 



Wave Refraction Plotter 



A plotter devised for constructing wave refraction diagrams 

 is depicted and procedures for its use explained. The plotter is 

 attached to a standard drafting machine. More than twice the pro- 

 duction, with fewer errors, is claimed through use of the plotter 

 when compared with use of the standard template or protractor. 

 Written by R. Q. Palmer, Honolulu Area, U. S. Army Engineer 

 District, San Francisco. 



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