into and through an estuary, and consequently the final water elevation 

 around the shores of the estuary due to hurricane surge and for associated 

 wind set-up (published in Technical Memorandum No. 93), Computations of 

 surge distriljution in Narragansett Bay have been made by applying this 

 method using IBM computers, for several design hurricane conditions. 

 These in turn are being utilized in conjunction with tests underway at 

 the Waterways Experiment Station to obtain design criteria for the New 

 England Division, 



DC, Dr. W. C. Krumbein (Consultant). Study of Beach Sampling Methods. 



A report was published (Technical Memorandum No. 90) conparihg a 

 number of (beach) sampling designs to indicate the factors involved in 

 beach sampling for different purposes. In addition, data were obtained 

 and analyzed on the behavior of artificially placed material in beach 

 fill and nourishment projects to determine or verify design criteria 

 for artificially placed beach material. 



X. Waterways Experiment Station, Corps of Engineers . 



a. Study of Interrelation of Tidal Inlets and Adjacent Beaches . 



Testing was continued, expanding on studies made in previous years, 

 A report was prepared (Technical Memorandum No. 94) describing the test 

 results, primarily of two similar tests, one with a relatively deep 

 lagoon and the other with a shallow lagoon. In both cases a down-beach 

 inlet migration occurred, but where breakthroughs of the outer bar 

 occurred several times with the deep lagoon, none occurred with the 

 shallow lagoon until one was forced by superimposing a storm tide con- 

 dition on the model. This study is supported jointly by the Beach Erosion 

 Board and the Corps of Engineers Tidal Hydraulics Committee, 



b. Study of Durability of Concrete , 



A report summarizing the factors affecting concrete durability in 

 Coastal Structures was published in Technical Memorandum No. 96, The 

 publication also reports on the results of tests of specimens, and 

 selected service records of specific prototype installations. 



XI. Dr. John H. Pavis - Contract for Study of Dune Stabilization. 



A report on the study of shore protection by vegetation and planting 

 on coastal dunes has been prepared and will be published as a Technical 

 Memorandum, The report summarizes the mechanics of dune formation and 

 the stabilization of these dunes by plants in the various coastal regions 

 of the United States. It also presents data on the history of several 

 continuing efforts to stabilize dunes by plants. 



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