A field experiment was conducted to develop correlations between wave characteristics and longshore sediment transport. The waves were measured by two near-bottom mounted pressure transducers and by visual observation when pressure transducers were not in operation. The average longshore sediment transport rates were determined from sequential volumetric surveys behind an offshore breakwater which was regarded as a total trap. The data analyzed encompass a period of 2 years, 1 year after each dredging cycle. Spectral analyses of the pressure gage wave data were conducted and yielded one direction per frequency. The correlations include immersed weight sediment transport rate, I, versus longshore component of wave energy flux at breaking, P£s· The most widely used correlation constant, K, in the, relationship I= KP£s is 0.77. The value determined from the data was K = 0.98, based on the P£s values directed toward the trap. One feature of this type of trap is the potential for overtrapping if the waves are directed nearly normal to shore.


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    Titel :

    Longshore Sand Transport Study at Channel Islands Harbor, California


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    1981


    Format / Umfang :

    2317011


    Medientyp :

    Report


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Klassifikation :


    Performance of a Sand Trap Structure and Effects of Impounded Sediments, Channel Islands Harbor, California

    Hobson, Richard D. | HENRY – Bundesanstalt für Wasserbau (BAW) | 1982

    Freier Zugriff


    Gross Longshore Transport Rate Formula

    C. J. Galvin / A. M. Asce | NTIS | 1973


    Short-term impoundment of longshore sediment transport

    Bodge, Kevin R. / Dean, Robert George | HENRY – Bundesanstalt für Wasserbau (BAW) | 1987

    Freier Zugriff

    Experience in longshore research

    Fullinwider, E.G. | Engineering Index Backfile | 1964