Abstract
The evolution of the joint distribution of wave heights and periods that results from shoaling is investigated using laboratory data obtained from experiments conducted on two (1:40 and 1:20) planar beach slopes. The data are compared to the theoretical joint distribution for wave heights and periods proposed by Longuet‐Higgins (1983). For unbroken waves with d/L >≈ 0.1 the shapes of the observed and predicted distributions agree reasonably well. However, the predicted joint distribution given by Longuet‐Higgins (1983) is displaced relative to the observed distribution. A parameterization for the observed displacement is offered. In addition, a parameterization for the variation of the spectral width parameter through the shoaling region is also given.
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