An integrated framework of coastal flood modelling under the failures of sea dikes: a case study in Shanghai

Abstract Climate change leads to sea level rise worldwide, as well increases in the intensity and frequency of tropical cyclones (TCs). Storm surge induced by TC’s, together with spring tides, threatens cause failure flood defenses, resulting massive flooding low-lying coastal areas. However, limited research has been done on combined effects increasing TCs characteristics due dikes. This paper investigates spatial variation dikes subject past future TC climatology rise, via a case study deltaic city- Shanghai, China. Using hydrodynamic model spectral wave model, storm tide parameters were calculated input for an empirical overtopping discharge rate. The results show that relative (RSLR) largely exacerbates hazard Shanghai future, which RSLR is likely have larger effect than Shanghai. In addition, will increase large extent terms water volume each corresponding given return period. approach developed this can also be utilized investigate risk other regions.