Process Based Modeling of Total Longshore Sediment Transport

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Abstract

HAAS, K.A. and HANES, D.M., 2004. Process based modeling of total longshore sediment transport. Journal of Coastal Research, 20(3), 853-861. West Palm Beach (Florida), ISSN 0749-0208.

Waves, currents, and longshore sand transport are calculated locally as a function of position in the nearshore region using process based numerical models. The resultant longshore sand transport is then integrated across the nearshore to provide predictions of the total longshore transport of sand due to waves and longshore currents. Model results are in close agreement with the I1-P1 correlation described by Komar and Inman (1970) and the CERC (1984) formula. Model results also indicate that the proportionality constant in the I1-P1 formula depends weakly upon the sediment size, the shape of the beach profile, and the particular local sediment flux formula that is employed. Model results indicate that the various effects and influences of sediment size tend to cancel out, resulting in little overall dependence on sediment size.

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