Analysis of estuarine flood levels based on numerical modelling. The Douro river estuary case study

Autori

DOI:

https://doi.org/10.5902/2236117038538

Parole chiave:

Numerical models, Estuary, Douro river, Floods, Delft3D

Abstract

Estuarine hydrodynamics present intermittent and complex circulation patterns. In this context, from the point of view of the coastal management associated with flood risks in riverine areas, numerical models allow predicting scenarios under specific hypotheses. This work simulates flood events occurring in the Douro river estuary recurring to numerical modelling tools. This estuary, located in the northern region of Portugal, periodically suffered severe flooding, with the associated losses and damages for the local protected landscape areas and hydraulic structures. The occurrence of these events justify the importance of a complete characterization of the areas that present risk of inundation and how they can be affected. A 2D-horizontal numerical model implemented with the Delft3D software was developed for this estuarine region including also the adjacent coastal zone. Available in-situ data were used for model calibration and validation processes. The obtained results are consistent with the in-situ measured water levels, allowing to understand the dynamics of the estuary during flood events. The robustness of the implemented numerical model allows to anticipate flood scenarios effects and associated water levels. The simulations results can then be used for sustainable management of this estuarine zone that presents high social, economic and environmental values.

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Biografie autore

Stênio de Sousa Venâncio, University of the Triângulo Mineiro, Uberaba, MG, Brazil; University of Minho, Braga, Portugal

Associate Professor, Department of Civil Engineering, Federal University of the Triângulo Mineiro, Uberaba-MG, Brazil and Center of the Territory, Environment and Construction (CTAC), University of Minho, Braga, Portugal

José Luís Pinho, University of Minho, Braga

Associate Professor, Center of the Territory, Environment and Construction (CTAC), University of Minho, Braga, Portugal

José Manuel Vieira, University of Minho, Braga

Full Professor, Center of the Territory, Environment and Construction (CTAC), University of Minho, Braga, Portugal

Paulo Avilez-Valente, University of Porto, Porto

Assistant Professor, Department of Civil Engineering, University of Porto, Porto, Portugal and Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Porto, Portugal

Isabel Iglesias, University of Porto, Porto

Assistant Researcher, Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Porto, Portugal

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Pubblicato

2019-06-27

Come citare

Venâncio, S. de S., Pinho, J. L., Vieira, J. M., Avilez-Valente, P., & Iglesias, I. (2019). Analysis of estuarine flood levels based on numerical modelling. The Douro river estuary case study. Revista Eletrônica Em Gestão, Educação E Tecnologia Ambiental, 23, e14. https://doi.org/10.5902/2236117038538