Accession Number : ADA019266

Title :   Masonboro Inlet, North Carolina: Movable-Bed Hydraulic Model Study, Effects of Temperature and Experimental Procedures.

Descriptive Note : Final rept.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Personal Author(s) : Sager,Richard A. ; Hollyfield,Noel W.

Report Date : DEC 1975

Pagination or Media Count : 94

Abstract : The study was conducted to determine the effects of water temperature on the results from a movable-bed model study of Masonboro Inlet, N.C., with a secondary objective to determine the effects of experimental procedures on the model results. The erratic reproduction of short-period waves near the beach and inlet was found to be the most probable source of experimental error. Other experimental errors discussed include the influence of initial molding of the movable bed, method of simulation of littoral transport approaching the inlet test sections, and bed sounding procedure. The study did not define temperature effects on movable-bed results; however, no evidence was found to indicate that temperature adversely affected the results of the Masonboro Inlet model tests within the range of temperatures investigated (50 to 78 F). A general course of action to resolve the question of temperature effects is recommended. The study consisted of three pairs of tests. Two pairs of tests were conducted with different water temperatures; the third (or control) pair was conducted with the same water temperature. Appendices provide: (1) Results of the hydrographic surveys; (2) Scour and fill maps; and Beach profiles for each test.

Descriptors :   *Inlets(Waterways), *Hydraulic models, Accuracy, North Carolina, Tidal currents, Sea water, Temperature, Experimental design, Test methods, Errors, Ocean waves, Sediment transport, Bottom, Motion, Sand, Hydrographic surveying, Beaches, Profiles, Maps

Subject Categories : Physical and Dynamic Oceanography
      Hydrology, Limnology and Potamology
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE