Two movable-bed experiments were conducted in 6- and 10-foot-wide wave tanks for 175 and 210 hours, respectively, with a wave period of 1.90 seconds and generated wave height of 0. 36 foot. The reflection coefficient from the changing profile varied from 0.08 to 0.20 in the 6-foot tank and 0.04 to 0.19 in the 10-foot tank and the variations can be qualitatively related to changes in the profile shape. The profile in neither experiment attained an equilibrium shape, even though the shoreline position was stabilized by backshore renourishment. For approximately the first 50 hours (or before the shoreline stabilization), the shoreline recession rate in the 6-foot tank increased from 0.06 to 0.14 foot per hour coincidently with a 10 0 Celsius temperature drop. The shoreline erosion rate in the 10-foot tank was 0.08 foot per hour, and the temperature was between 25 and 30 degrees Celsius. The difference in recession rates between the two tanks is possibly due to differences in the distance from the generator to the initial shoreline (100 feet in the 6-foot tank and 61.7 feet in the 10-foot tank) or to temperature differences. Lateral variations occurred in the rate of development of the inshore zone in the 10-foot tank that did not occur in the 6-foot tank, indicating that the tank width may also have affected the profile development.


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    Title :

    Laboratory Effects in Beach Studies, Volume 2: Movable-Bed Experiments with Ho/Lo = 0.021 (1970)


    Contributors:

    Published in:

    Publication date :

    1977


    Size :

    31031983


    Type of media :

    Report


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :


    Laboratory Effects in Beach Studies, Volume 6: Movable-Bed Experiments with Ho/Lo = 0.004

    Chesnutt, Charles B. / Stafford, Robert P. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1978

    Free access

    Laboratory Effects in Beach Studies, Volume 7: Movable-bed experiments with Ho/Lo = 0.013

    Chesnutt, Charles B. / Stafford, Robert P. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1978

    Free access

    Laboratory Effects in Beach Studies, Volume 4: Movable-Bed Experiments with Ho/Lo = 0.021 (1972)

    Chesnutt, Charles B. / Stafford, Robert P. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1977

    Free access

    Laboratory Effects in Beach Studies, Volume 5: Movable-Bed Experiments with Ho/Lo = 0.039 (1972)

    Chesnutt, Charles B. / Stafford, Robert P. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1977

    Free access

    Laboratory Effects in Beach Studies, Volume 1: Procedures Used in 10 Movable-Bed Experiments

    Stafford, Robert P. / Chesnutt, Charles B. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1977

    Free access