Parametric study of solitary wave propagation and runup over fringing reefs based on a Boussinesq wave model

The influence of climate change on tsunami-like solitary wave inundation over fringing reefs

“…This ratio has been proved to be robust for the wave processes over the sloping plane beach (Shi et al 2012) and here we demonstrate that this ratio is also valid for the solitary wave propagation over the sharply varying reef bathymetry, where parameters of empirical breaking models have to be tuned (Yao et al 2012), with no need of tuning. The validation results presented in this paper are consistent with the previous work (Ning et al 2018), but the results for the case with the incident wave height of 0.07 m was not presented in Ning et al (2018). Moreover, Ning et al (2018) suggested dx = 0.01 m is accurate enough for the case with the incident wave height of 0.05 m while this study confirms dx = 0.02 m is also accurate enough and more computationally efficient even for the case with the incident wave height of 0.07 m, which has smaller incident wave length.…”

“…The validation results presented in this paper are consistent with the previous work (Ning et al 2018), but the results for the case with the incident wave height of 0.07 m was not presented in Ning et al (2018). Moreover, Ning et al (2018) suggested dx = 0.01 m is accurate enough for the case with the incident wave height of 0.05 m while this study confirms dx = 0.02 m is also accurate enough and more computationally efficient even for the case with the incident wave height of 0.07 m, which has smaller incident wave length.…”

“…But the run-up process over the back-reef beach was not included. In this study, the present model, version 3.0, released in December 2016, will be calibrated and validated with the newly performed laboratory measurements (Ning et al 2018), including shoaling, breaking, bore propagation and running up a sloping back-reef beach. Using the validated model, the responses of solitary wave inundation distance and fluid forces within the inundation zone to climate change-related sea-level rise and reef surface roughness degrading were investigated and discussed to give some insights into the influence of climate change on tsunami hazards over fringing reefs.…”

A Study of the Maximum Momentum Flux in the Solitary Wave Run-Up Zone over Back-Reef Slopes Based on a Boussinesq Model

“…Therefore, they are still insufficient to demonstrate the role of fringing reefs in the mitigation of tsunami hazards. More recently, Yao et al [23] and Ning et al [38] numerically investigated the effects of reef parameters on solitary wave run-up height, contributing to the understanding of the role of fringing reefs. Besides the run-up height, the maximum momentum flux in the solitary wave run-up zone also serves as a measure of tsunami damage potential with engineering and environmental significance.…”

“…The shock-capturing Boussinesq model utilized in this study is FUNWAVE-TVD [34], which developed a high-order shock-capturing TVD (Total Variation Diminishing) scheme for the original FUNWAVE model [43]. With a proper value of the grid size and Manning coefficient incorporated in the bottom friction term, the present model has been shown to be robust for the solitary wave transformation and run-up over fringing reefs, as presented in Ning et al [38].…”