Historical shoreline and bathymetric survey data were compiled for the barrier islands and passes fronting Mississippi Sound to develop a regional sediment budget spanning a 90-year period. Net littoral sand transport along the islands and passes is primarily unidirectional (east-to-west). Beach erosion along the east side of each island and sand spit deposition to the west result in an average sand flux of about 430,000 cy/yr throughout the barrier island system. Dog Keys Pass, located updrift of East Ship Island, is the only inlet that is a net sediment sink. It also is the widest pass in the system and has two active channels and ebb shoals. As such, a deficit of sand exists along East Ship Island. Littoral sand transport decreases rapidly on West Ship Island, where exchange of sand between islands terminates because of wave sheltering from shoals and islands of the old St. Bernard delta complex, Louisiana.


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    Titel :

    Sediment Budget: Mississippi Sound Barrier Islands


    Beteiligte:
    M. R. Byrnes (Autor:in) / J. D. Rosati (Autor:in) / S. F. Griffee (Autor:in)

    Erscheinungsdatum :

    2011


    Format / Umfang :

    15 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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