statistical Wave Data on The Great Lakes - Reports on the Lake 

 Michigan and Lake Ontario data have gone to press and will be distributed 

 in July as Technical Memorandums No. 36 and 37. The Lake Erie report 

 has been completed and will go to press as Technical ^"^morandum No. 38 in 

 July. 



Project ESMOND - This is a new project being carried on by the 

 Nprth Atlantic Division for the Office, Chief of Engineers, The task 

 assigned to the Beach Erosion Board on this study is to determine by 

 laboratory testing, a relationship between some of the physical properties 

 (density and viscosity) of bottom fluff material and soimdings obtained 

 therein with various shaped sounding leads, A preliminary testing of 

 various leads has been made in clear water for calibration purposes, A 

 U-foot diameter sediment tank, 10 feet high has been constructed with 

 glass side panels for use with fluff material obtained from the Delaware 

 River. The viscosities of the various water -fluff mixtures to be tested 

 are determined by use of a Brookfield viscometer, and the density by 

 standard measurements. Relatively undisturbed " samples of the fluff 

 under test will be taken at various depths in the sediment tank by use 

 of corporation cocks adapted to cylindrical tubes. 



Wave Forecasting Methods - A comparison of waves forecast from a 

 single storm in the Pacific by both liie Sverdrup-Munk and the Darbyshire 

 methods with those recorded by the University of California wave recorder 

 at Pt. Arguello is being completed. Preliminary examination shows, for 

 this one case, both methods to compare with the record with about the 

 same order of error except for about l6 hour time lag obtained with the 

 Darbyshire method. 



Routine progress and analysis has been made on the other projects 

 being carried out by the Research Division, and a three week course 

 in wave phenomena and design techniques was given to certain District and 

 Division personnel. Project reports on the Accuracy of Hydrographic 

 Surveying and the laboratory investigation of the Vertical Rise of 

 Solitary Waves on Impermeable Slopes, were published as Technical 

 Memorandums 32 and 33. 



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