COMPARISON BETWEEN BIJKER AND LEONT’YEV LONGSHORE SEDIMENT TRANSORT FORMULAE

Longshore sediment transport (LST) rate induced by waves and current is an important element in coastal management, morphology and design of coastal structures.When LST is determined, shoreline changes, caused by nature or human constructions can be predicted. LST is mainly calculated either by applying a bulk or detailedapproach. Formulas such as CERC uses a bulk approach and estimates an integral LST amount across surf zone. Many researchers have worked on the calibrationcoefficient of this formula. One of the most recent formulas for CERC coefficient is proposed by Leont’yev [1]. An example of a detailed LST calculation method isproposed by Bijker [2]. In the present paper the results obtained by a simplified Bijker method and CERC formula based on Leont’yev proposed coefficient are compared and evaluated against field data.