How to Cite

Zhang, C., Li, Y., Cai, Y., Shi, J., & Zheng, J. (2020). NEW BREAKER INDEX FORMULA IN PARAMETRIC WAVE MODEL. Coastal Engineering Proceedings, (36v), waves.44.


Phase-averaged parametric wave models have been widely used to predict nearshore wave height transformation. The performance of parametric models depends significantly on the wave breaker index (), which controls the amount of breaking energy dissipation. Previous parameterizations improved the model predictability by considering the breaker index as a tunable coefficient, while made less effort to the physical interpretation for the proposed formulas. Indeed, inconsistency from the physical perspectives might exist. Therefore, the parameterization of still requires further investigation by considering the comprehensive influences of the offshore wave parameters and the local water depth, as well as the possible relationships with the breaker type and the surf zone state.


Apotsos, Raubenheimer, Elgar, Guza (2008): Testing and calibrating parametric wave transformation models on natural beaches, Coastal Engineering, ELSEVIER, vol. 55, pp. 224-235.

Baldock, Holmes, Bunker, Van Weert (1998): Cross-shore hydrodynamics within an unsaturated surf zone, Coastal Engineering, ELSEVIER, vol. 34, pp. 173-196.

Battjes, Janssen (1978): Energy loss and set-up due to breaking of random waves, Proceedings of the 16th International Conference on Coastal Engineering 1978, pp. 569-587.

Janssen, Battjes (2007): A note on wave energy dissipation over steep beaches, Coastal Engineering, ELSEVIER, vol. 54, pp. 711-716.

Thornton, Guza (1983): Transformation of wave height distribution, Journal of Geophysical Research: Oceans, AGU, vol. 88, no. C10, pp. 5925-5938.

Ruessink, Walstra, Southgate (2003): Calibration and verification of a parametric wave model on barred beaches, Coastal Engineering, ELSEVIER, vol. 48, pp. 139-149.

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.