Delft3D Morphological Modeling Downstream of Sergio Motta Reservoir Dam

Siqueira, A. G.; Fiedler, M.; Yassuda, Eduardo

doi:10.1007/978-3-319-93133-3_3

Cited by 2 publications

(4 citation statements)

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“…At VP6, this increase will be 0.5 m, and at Tui it will be 0.4 m. For the RCP 4.5 and RP 100 years' scenarios, the water level increase will be about 0.4 m at VP1 and VP4, 0.3 m at VP6, and 0.2 m at Tui. Results for scenarios involving RP 50 years do not show differences between the two emissions scenarios (RCP 4.5 and RCP 8.5) since, according to [22], the predicted ocean extreme water levels are identical. In this case, the expected water level rises are 0.2 m at VP1, VP4, and VP6, and 0.1 m at Tui.…”

Section: Hydrodynamic Resultsmentioning

confidence: 90%

“…The bias analysis demonstrated that both data sets selected from field campaigns and hydrometric gauges for calibration, resulted in a slight underestimation of the water levels. The various sources of uncertainty associated either to the defined extreme ocean water levels [22] or the implemented model forcing functions and parameters, advised a continuous effort in the calibration of the model. An adequate answer to this inherent uncertainty is to turn the model operational [34] and to use assimilation techniques [35], based on continuous monitoring data.…”

Section: Discussionmentioning

confidence: 99%

“…The numerical model implemented for the analysis of the hydrodynamic and morphodynamic behavior of the river Minho estuary followed a two-dimensional approach in the horizontal plane (2DH) and was developed using the Delft3D software [12]. This numerical tool solves the Reynolds averaged conservation equations of mass and momentum, being able to simulate hydrodynamic as well as sedimentary transport equations for morphodynamic processes simulation, with satisfactory accuracy, allowing to achieve reliable results [6,11,22].…”

Section: Numerical Modelmentioning

confidence: 99%

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Hydro- and Morphodynamic Impacts of Sea Level Rise: The Minho Estuary Case Study

Melo

Pinho

Iglésias

et al. 2020

JMSE

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The understanding and anticipating of climate change impacts is one of the greatest challenges for humanity. It is already known that, until the end of the 21st century, the mean sea level (MSL) will rise at a global scale, but its effects at the local scale need to be further analyzed. In this context, a numerical modelling tool and a methodological approach for the river Minho estuary (NW of the Iberian Peninsula) are presented, to predict possible consequences of local MSL rise, considering the greenhouse emission scenarios RCP 4.5 and RCP 8.5. Hydrodynamic and morphodynamic impacts were analyzed considering several driving factors, such as tides, sea level rise, storm surge, wave set-up, and different river flood peak discharges, taking into account their probabilities of occurrence. The model was calibrated using in-situ data and a data assimilation tool, the OpenDA, which automates this process, allowing to reach reliable results in a considerably short time when compared with traditional techniques. The results forecast that the predicted MSL rise will reduce the flow velocity magnitude and the sediment transport into the coastal platform but will aggravate the inundation risks along the estuarine banks. In the worst scenario (RCP 8.5) the water level near the river mouth of the estuary is expected to rise 0.20 m for 50 years return period ocean water rising, and 0.60 m for 100 years return period. It was also possible to identify that floods are the most important driver for the sediment transport along the estuary, while the tide effect in the morphodynamics is restricted to the downstream estuarine region. This work demonstrated the importance of the numerical modelling tools to better understand the effects of climate change at local scales through the representation of the estuarine hydrodynamic pattern evolution for future climate scenarios.

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Section: Hydrodynamic Resultsmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Numerical Modelmentioning

confidence: 99%

See 1 more Smart Citation

Hydro- and Morphodynamic Impacts of Sea Level Rise: The Minho Estuary Case Study

Melo

Pinho

Iglésias

et al. 2020

JMSE

View full text Add to dashboard Cite

show abstract

“…The Delft3D software was selected to implement a 2DH model of the Douro estuary. This software solves the Reynolds averaged conservation equations of mass and momentum, being able to simulate hydrodynamics with acceptable accuracy [6,13].…”

Section: Numerical Modelmentioning

confidence: 99%