The Impact of Eco-retrofitting on Coastal Resilience Enhancement – A Physical Modelling Study

Abstract Recent climate change studies highlight that the sea-level rise and increase in intensity frequency of extreme climatic events storm surges will result catastrophic wave overtopping from coastal defences. Retrofitting existing seawalls provides great potentials for enhancement resilience region through attenuation. With increasing attention towards sustainable low emission solutions improving critical infrastructures to natural hazards, providing protection service is no longer only concern scientists, but environmental impacts such interventions also started be considered. This paper presents a laboratory-scale investigation ‘eco-retrofitting’ approaches including vertipools reef breakwater their impact on mitigating seawall. The laboratory tests were conducted vertical seawall with 1(V):20(H) smooth foreshore. Each test was consisted approximately 1000 pseudo-random waves based JONSWAP spectrum. Both impulsive non-impulsive conditions tested. plain taken as reference case, exhibited an overall good agreement empirical predictions, when compared EurOtop. analysis data highlights significance tested eco-interventions volume, 70% reduction mean rate.