Value Waterways Experiment Station, Vicksburg, Mississippi, Progress 
Report for Period ending 31 August 1953. 
Wave Run-up on Shore Structures - Overtopping tests on a smooth faced 
pavement with a sea-side slope of 1 on 13 and a beach slope of 1 on 10 were 
completed for water depths of 25 and 3 feet, using crown elevations from 
+3 to +39 feet. 
Effect of Inlets on Adjacent Beaches - A test is in progress with the 
lagoon (forced) tidal apparatus adjusted so that the inlet will remain open. 
The unbroken beach was stabilized in 120 tidal cycles, the inlet cut through, 
and the test run for 320 additional tidal cycles. The inlet is tending to 
migrate, breakthroughs having occurred after 70, 200, and 320 cycles. 
VIII. Beach Erosion Board, Research Division, Project Status Report for 
Quarter ending 18 September 1953. 
In addition to the research projects under contract to various institutions 
which are reported on above, the Research Division of the Beach Erosion 
Board is carrying out certain projects with its own facilities. The main 
unclassified projects were described in Volume 6, No. of the Bulletin 
(October 1952) and a short description of some of the work accomplished 
through the last quarter is given below. 
Project ESMOND. The laboratory testing for this project is about 95 
percent complete. The testing involved the dropping of various shaped and 
weighted sounding leads into a sediment tank containing Delaware River 
low-density material. A report concerning the results of these tests is now 
being prepared. The report will also include the results of at least two 
field investigations which were made with the experimental leads. 
Study of Effect of Tsunamis. The problem of tsunami run-up is being 
attacked through the analysis of the run-up of solitary waves since it may 
be expected that at least the first wave of a tsunami group should 
act similar to a solitary wave. Results previously obtained (BEB Tech. 
Memo. No. 33) for slopes of between 5 and 5 degrees are being extended 
to flatter slopes (11 on 30, 1 on 60). In addition the effects of combina- 
tions of slopes will be tested. It is expected that a preliminary report 
will be completed by October 15.. 
Routine progress, ggpting and analysis has been made on the other 
projects being carried/by the Research Division. Project reports on Wave 
and Lake Level Statistics for Lakes Michigan, Erie, and Ontario were 
published as Technical Memorandums No. 36, 37 and 38 and on "Development 
and Field Tests of a Sampler for Suspended Sediment in Wave Action" as 
Technical Memorandum No. 3. In addition two short reports on waves off 
Martha's Vineyard and on a comparison of a wave forecast by the Darbyshire 
method with one by the Sverdrup-Munk method as revised by Bretschneider, 
are contained in this issue of the Bulletin. 
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