Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10120062 | Physics and Chemistry of the Earth, Parts A/B/C | 2005 | 14 Pages |
Abstract
Our study investigates the possible effects of recent land-use changes on the frequency regime of floods for reclaimed lands. We modelled the runoff concentration behaviour of a reclaimed area of 76Â km2, located in the Po River plain near the city of Bologna (northern Italy), through the combined application of a semi-distributed rainfall-runoff model, which captures the key features of surface and sub-surface flows, and a hydrodynamic streamflow routing model. Three land use data from 1955, 1980 and 1992 were available. We implemented the rainfall-runoff model to the three land-use scenarios and analysed the hydrological-hydraulic behaviour of the study area for numerous rainfall events associated with different recurrence interval. The results of our study show a rather significant sensitivity of the flood frequency regime of the reclaimed land to land-use changes, and the sensitivity tends to increase as the recurrence interval of the rainfall event decreases.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
Giorgio Camorani, Attilio Castellarin, Armando Brath,