Abstract

In continuation of a recent companion paper (Skotner, C., Apelt, C.J., Application of a Boussinesq model for the computation of breaking waves. Part 1: Development and verification. Ocean Eng., in press) describing the development of a set of Boussinesq equations that can be used to study the transformation of waves before, during and after wave breaking provided the bed slope is relatively gentle, the present paper presents new data and tests the ability of the developed model to compute wave-induced setdown and setup of regular waves propagating onto a submerged coral reef consisting of relatively steeper slopes. This is done by comparison with new laboratory measurements conducted in a closed wave flume. The results show that the model computes accurately the setdown and setup of regular waves of small incident wave height but there is a tendency to underestimate the wave setup as the incident wave height increases.

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