Using simplified bathymetry and SAR imagery in the validation of a hydraulic model for the Tagus River floodplain

• DOI: 10.2112/si75-003.1
• Publication Date: 2016-08-22T14:39:29Z
• Authors: Maria Amélia V.C....; Rita Pestana; Magda Matias; Dora Roque; António Trigo-Tei...; Sandra Heleno
• Keywords: 13. Climate action; 0207 environmental engineering; 02 engineering and technology; 14. Life underwater

ABSTRACT Araujo, M.A.V.C.; Pestana, R.; Matias, M.; Roque, D.; Trigo-Teixeira, A., and Heleno, S., 2016. Using simplified bathymetry and SAR imagery in the validation of a hydraulic model for the Tagus River floodplain. In: Vila-Concejo, A.; Bruce, E.; Kennedy, D.M., and McCarroll, R.J. (eds.), Proceedings of the 14th International Coastal Symposium (Sydney, Australia). Journal of Coastal Research, Special Issue, No. 75, pp. 13 - 17. Coconut Creek (Florida), ISSN 0749-0208. This work presents several approaches in the validation of the hydrodynamic model Tuflow on the simulation of flood extents and water levels, based on satellite SAR imagery. A methodology that uses a simplified bathymetry in the river main course is employed, which proves to be reliable and accurate for high-flow events. This was made possible as the digital terrain model was acquired in a dry period, accounting for large dry areas in the river bed, avoiding in this way the need of expensive river bathymetry surveys. Also, two methods ...