Role of vegetated barrier in reducing tsunami damage

Field observations of the after effects of the 2004 Sumatra and the 2011 Tohoku tsunami have indicated the important role of the coastal vegetation in affecting tsunami wave runup. By using the Serre-Green-Naghdi equations, currently I am studying how an onshore vegetation barrier modifies the tsunami runup under variations of barrier width, W; barrier location, Bl; tsunami wave amplitude, H/ho; and beach slope, S.

Figures below show tsunami inundations after interactions with barrier for 1:10 and 1:20 beach slopes respectively. Regular patterns are easily observed although different values of studied variables are considered.

My goal is to characterize these patterns based on the aforementioned variables in order to provide useful considerations when designing tsunamis evacuation plans.