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The effects of seawalls on the beach: An extended literature review
Kraus, N.C. (1988). The effects of seawalls on the beach: An extended literature review. J. Coast. Res. Spec. Issue 4: 1-28
In: Journal of Coastal Research. Coastal Education and Research Foundation: Fort Lauderdale. ISSN 0749-0208; e-ISSN 1551-5036, meer
Peer reviewed article  

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    Erosion > Coastal erosion > Beach erosion
    Literature reviews
    Protection > Environmental protection > Coastal zone management > Shore protection
    Structures > Hydraulic structures > Coastal structures
    Structures > Hydraulic structures > Coastal structures > Coast defences > Sea walls
    Topographic features > Landforms > Coastal landforms > Beaches

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  • Kraus, N.C.

    A previous review by the author of the literature on the effects of seawalls on the beach is extended to include recent work and more thorough coverage of past studies. The present review covers approximately 100 technical papers on laboratory, field, and theoretical and conceptual studies published through mid-1988 and has three objectives: (1) to collect results of well-documented studies, (2) to summarize the state of knowledge on the seawall and beach interaction, and (3) to make recommendations for further study and field monitoring programs. It is concluded that beach change near seawalls, both in magnitude and variation, is similar to that on beaches without seawalls, if a sediment supply exists. Sediment volumes eroded by storms at beaches with and without seawalls are comparable, as are post-storm recovery rates. In addition, the shape of the beach profile after construction of a seawall is similar to the pre construction shape if a sediment supply exists, showing the same number of bars with approximately the same volumes and relative locations. The form of the erosional response to storms at seawalls is typically different, however, with foreshore erosion that occurs on beaches with out seawalls manifested as more localized toe scour and end effects of flanking and impoundment at seawalls. Limited evidence indicates that the subaqueous nearshore profile on a sediment-deficient coast with seawalls does not steepen indefinitely, but approaches an equilibrium configuration compatible with the coarser-grained particles comprising the bottom sediment.

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