T.M. No. 54 - March 1953 



Development and Field Tests of a Sampler for Suspended Sediment in 

 Wave Action by George M. Watts 



The development of a mechanical sampler to extract a representa- 

 tive sample of suspended sediment and measure the quantity of water 

 from which it is extracted where material is in suspension due to wave 

 action is described. Results of field tests made at Pacific Beach, 

 California with analysis of their significance are presented. 



T.M. No. 55 - inarch 1955 



Analysis of Moving Fetches for Wave Forecasting by Kenneth Kaplan 



An analysis is presented in the interest of standardizing and 

 simplifying wave forecasting procedures, and of making possible 

 accurate wave forecasts by those with only a cursory l<nowledge of 

 meteorological and wind wave theories. Changing weather situations 

 which are possible between weather charts are grouped in eight cate- 

 gories according to relative positions of fetch front and rear and 

 the energy front on successive weather charts, and relative lengths 

 of the first chart measured and minimum fetches. The eight situations 

 are analyzed and forecasting procedures developed for each. 



T.M. No. 56 - March 1955 



Wave and Lake Level Statistics for Lake Michigan 

 by Thorndike Saville, Jr. 



Detailed statistical wave data for deep water, based on hindcasts 

 from synoptic weather charts for the 5-year period 1948-1950, are pre- 

 sented for five stations on Lake Michigan. An example of the method 

 for obtaining wave data for shallow water at a point between stations 

 by interpolation and refraction analysis is worked out. Frequency data 

 on lake levels are also presented. 



T.M. No. 57 - March 1955 



Wave and Lake Level Statistics for Lake Erie by Thorndike Savi Me, Jr. 



Detailed statistical wave data for deep water, based on hindcasts 

 from synoptic weather charts for the 5-year period 1948-1950, are pre- 

 sented for four stations on Lake Erie. Frequency data on lake levels 

 are also presented. 



T.M. No. 38 - March 1953 



Wave and Lake Level Statistics for Lake Ontario 

 by Thorndike Saville, Jr. 



Detailed statistical wave data for deep water, based or hindcasts 

 from synoptic weather charts for the 3-year period 1958-1950 are pre- 

 sented for three stations on Lake Ontario. Frequency data on lake 

 levels are also presented. 



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