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Title: Extending the H&R wave overtopping model to vertical structures
Authors: Reis, M. T.
Hedges, T.
Neves, S.
Neves, M. G.
Hu, K.
Mase, H.
Issue Date: Jun-2013
Abstract: The H&R wave overtopping model, originally developed for sloping structures, is employed in a number of operational coastal flood forecasting and warning systems. This paper describes the first step in a project to extend the model to encompass vertical structures. Use is made of the CLASH database for the purpose of checking whether it is appropriate to simply extrapolate the existing formulae for the model’s empirical coefficients beyond their strict ranges of applicability. The outcome is encouraging. Despite the fact that, in general, the model tended to underestimate the higher wave overtopping rates, it was reasonably accurate in describing the lower overtopping rates which normally trigger flood warnings, suggesting that it may be worthwhile pursuing the task of calibrating and validating the H&R model for vertical structures.
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