Author(s): A. Paquier; F. Pons; E. Leblois; F. Rodriguez
Linked Author(s):
Keywords: Rainfall simulator; Urban database; Urban flood; Shallow water equations
Abstract: 2-D hydrodynamic modeling of urban flood was performed to simulate the September 19,2000 event in the city center of Marseille. The whole basin of the Vieux Port was modeled using as direct input the rainfall. A rainfall simulator permitted to obtain realistic distribution of the rainfall during the whole event and over the whole basin. Then, the rainfall produced was distributed along the streets to simulate real inputs to the street network. For the latter, various modelling methods were used, which provide some high differences only in the areas with low building density. Conversely, the differences using various runs of the rainfall simulator can be higher showing also a difference in the peak occurrence. The uncertainty resulting from the choice either of one of these rainfall simulator runs or of one of these distribution methods is higher than the one resulting from the choice of hydrodynamic software.
Year: 2009