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Title: Preliminary report: laboratory study of the effect of an uncontrolled inlet on the adjacent beaches
Authors: U.S. Army Engineer Waterways Experiment Station
United States. Army. Office of the Chief of Engineers
Saville, Thorndike, 1925-
Caldwell, Joseph M. (Joseph Morton)
Simmons, H. B. (Henry B.)
Keywords: Beach erosion
Tidal inlets
Inlet characteristics
Tidal prism
Beach processes
Publisher: United States, Beach Erosion Board
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical memorandum (United States. Beach Erosion Board) ; no. 94.
Description: Technical Memorandum
From the Preface: Many shore problems are complicated by the existence of a tidal inlet cutting through the shore area and affecting, to some distance on either side of the inlet, the reaction of the shore area to the normally applied littoral forces. The effects of these inlets, and of the general inlet regime, can be large, especially if the inlet is uncontrolled and therefore free to migrate. This report presents the initial results of a series of laboratory tests made to determine the manner in which beach processes in the vicinity of a tidal inlet differ from those outside the influence of the inlet, and the adjustments which can be expected to occur in a previously unbroken beach following introduction of an inlet. A total of six tests are reported on; the inlets in the first four tests, however, closed rather quickly due to insufficient tidal prism, and served essentially only as calibrating tests to arrive at a combination of tidal prism, ocean wave characteristics, and inlet characteristics which would result in a migrating inlet that maintained itself. Such an inlet was achieved for tests 5 and 6 -- the difference between these two tests being in the depth of the lagoon, the test 5 lagoon being quite deep so that material carried into the lagoon on the flood tide had no chance to leave the lagoon on the ebb, and the test 6 lagoon being the same depth as the inlet.
Rights: Approved for Public Release, Distribution is Unlimited
Appears in Collections:Technical Memorandum

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