period 1948-1950, are presented 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. 



NO. 37 - March 1953 



II-A "Wave and Lake Level Statistics for Lake Erie" by Thorndike 



C Saville, Jr. 



Detailed statistical wave data for deep water, based on 

 hindcasts from synoptic weather charts for the 3-year 

 period 1948-1950, are presented for four stations on Lake 

 Erie. Frequency data on lake levels are also presented. 



NO. 38 - March 1953 



II-A "Wave and Lake Level Statistics for Lake Ontario" by 

 C Thorndike Saville, Jr. 



Detailed statistical wave data for deep water, based on 

 hindcasts from synoptic weather charts for the 3-year 

 period 1948-1950, are presented for three stations on 

 Lake Ontario. Frequency data on lake levels are also 

 presented. 



NO. 39 - March 1953 



II-B "Areal and Seasonal Variations in Beach and Nearshore Sedi- 

 C ments at La Jolla, California" by Douglas L. Inman 



The nature of the seasonal distributions of certain phy- 

 sical properties of sediments on the beach and shallow 

 shelf area between two submarine canyon heads was studied. 

 Series of bottom samples were obtained periodically. 

 Topographic surveys showing the changes in sand level 

 were made concurrently with sediment sampling operations. 

 Emphasis in the laboratory analysis of the sediments was 

 on distribution of particle size, but other properties 

 such as shape, roundness, heavy mineral and carbonate con- 

 tent were also measured. Movement of beach and bottom 

 materials and areal distribution of their physical 

 properties are presented and discussed. 



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