The study of fl ooded areas is derived from detailed knowledge of the area under consideration (river and fl oodplain), hydrological analysis and hydraulic modeling. The estimated risk of fl ooding is now facilitated by survey systems able to create enable the creation of highly detailed digital terrain models (COBBY et alii, 2001), by complex mathematical models and sophisticated hardware and software which permit the achievement of complex elaborations within satisfactory time periods. However, the construction of the simulation model is always a compromise between the capability of the instruments and the detail that you want to achieve. So it can be useful to verify the extent of changes in hydraulic parameters of output compared to the choices made on the input parameters This is especially true when observed data of fl ood events are absent. Considering an extremely flat area, this work aims to analyze the results of hydrodynamic bi-dimentional simulations depending on the detail achieved in the characterization of the study area (expressed through the computational domain resolution) and the floodplain roughness.
SENSITIVITY ANALYSIS IN FLOOD MODELING OF FLAT AREAS
SOLE, Aurelia;GIOSA, LUCIANA;CANTISANI, Andrea;STATUTO, DINA;
2011-01-01
Abstract
The study of fl ooded areas is derived from detailed knowledge of the area under consideration (river and fl oodplain), hydrological analysis and hydraulic modeling. The estimated risk of fl ooding is now facilitated by survey systems able to create enable the creation of highly detailed digital terrain models (COBBY et alii, 2001), by complex mathematical models and sophisticated hardware and software which permit the achievement of complex elaborations within satisfactory time periods. However, the construction of the simulation model is always a compromise between the capability of the instruments and the detail that you want to achieve. So it can be useful to verify the extent of changes in hydraulic parameters of output compared to the choices made on the input parameters This is especially true when observed data of fl ood events are absent. Considering an extremely flat area, this work aims to analyze the results of hydrodynamic bi-dimentional simulations depending on the detail achieved in the characterization of the study area (expressed through the computational domain resolution) and the floodplain roughness.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
