Predictions of run-up scale on coastal seawalls using a statistical formula

Journal of Ocean Engineering and Marine Energy - Tập 7 - Trang 173-187 - 2021
Thamnoon Rasmeemasmuang1, Winyu Rattanapitikon2
1Department of Civil Engineering, Faculty of Engineering, Burapha University, Chon Buri, Thailand
2School of Civil Engineering and Technology, Sirindhorn International Institute of Technology, Thammasat University, Khlong Luang, Thailand

Tóm tắt

This paper presents predictions of run-up scale on coastal structures using a multiple linear regression equation. The Wonnapha Beach seawall in Chon Buri, Thailand, is used as the study site. Instead of exactly measuring wave run-up on structures, run-up levels were observed and categorized into five scales (from 0 to 4). Run-up scales, together with the data of tidal levels, offshore waves, and winds, are analyzed using multiple linear regression. A new parameter, “effective wind speed,” is introduced by merging wind direction and speed into one parameter explaining more physical meaning of wind influences on wave run-up. The regression formula can reproduce observed run-up scales with an $$R_{{}}^{2}$$ of 0.589 and the mean absolute error of 0.62. For this study, the predictive formula can be applied as a real warning for the near future since simultaneous data is used; however, applying this approach while using forecasted input data would be a useful and timely warning tool for alerting people who live near coastal defenses about potentially hazardous run-up conditions.

Tài liệu tham khảo

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