# How well can wave runup be predicted? comment on Laudier et al. (2011) and Stockdon et al. (2006)

August 11, 2015

Laudier et al. (2011) suggested that there may be a systematic bias error in runup predictions using a model developed by Stockdon et al. (2006). Laudier et al. tested cases that sampled beach and wave conditions that differed from those used to develop the Stockdon et al. model. Based on our re-analysis, we found that in two of the three Laudier et al. cases observed overtopping was actually consistent with the Stockdon et al. predictions. In these cases, the revised predictions indicated substantial overtopping with, in one case, a freeboard deficit of 1 m. In the third case, the revised prediction had a low likelihood of overtopping, which reflected a large uncertainty due to wave conditions that included a broad and bi-modal frequency distribution. The discrepancy between Laudier et al. results and our re-analysis appear to be due, in part, to simplifications made by Laudier et al. when they implemented a reduced version of the Stockdon et al. model.

## Citation Information

Publication Year 2015 How well can wave runup be predicted? comment on Laudier et al. (2011) and Stockdon et al. (2006) 10.1016/j.coastaleng.2015.05.001 Nathaniel G. Plant, Hilary F. Stockdon Article Journal Article Coastal Engineering 70155836 USGS Publications Warehouse St. Petersburg Coastal and Marine Science Center