Geographical Information Systems and Remote Sensing: a possible support in 2D modelling of flood propagation

by F. F. Amighetti, ISMES S.p.A., Bergamo, Italy,
P. P. Congiatu, ISMES S.p.A., Bergamo, Italy,
A. Di Filippo, ISMES S.p.A., Bergamo, Italy,
P. Molinaro, ISMES S.p.A., Bergamo, Italy,

Abstract: This paper examines some specific aspects regarding the implementation of a 2D mathematical model of flood propagation, namely that of input and output data management. The problems connected with the acquisition, storage and updating of input data, and with the storage, representation and further elaboration of the produced results and information are examined. The use of an integrated system, based on the application of Geographical Information System (GIS) and Remote Sensing (RS) techniques, is discussed. The combination of appropriate remotely sensed images (from airplanes or satellites), available cartographic data and data collected by field surveys, is necessary to create an updated GIS of the study area. The GIS can be used to produce the terrain parameters required by 2D modelling of flood propagation, and to implement a suitable interface between the data and the model. Finally, the GIS can be used as an aid for storage, representation, and analysis of the model output.

Subject Headings: Geographic information systems | Data processing | Two-dimensional models | Information systems | Hydrologic models | Information management | Mathematical models | Floods

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