ACCURACY AND APPLICABILITY OF THE SPM LONGSHORE TRANSPORT FORMULA

J.S. Schoonees, A.K. Theron

Abstract


The ability to predict the time-averged longshore sediment transport rate accurately is essential for many coastal engineering applications. Because the longshore transport formula in the Shore Protection Manual (SPM; US Army, Corps of Engineers, 1984) is possibly the most widely used, it is important to know its accuracy. The aim of this paper is therefore to investigate the accuracy and applicability of this formula (the SPM formula). In addition, a number of variations to this formula are presented; these are also tested against a comprehensive data set. Finally, the SPM formula is re-calibrated and guidance is given regarding the use of this formula for coarse bed material.

Keywords


longshore transport; transport formula; SPM formula

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