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Hydrodynamic Modeling and Simulation of Water Residence Time in the Estuary of the Lower Amazon River by de Abreu, Carlos Henrique M.; Barros, Maria de Lourdes Cavalcanti; Brito, Daímio Chaves; Teixeira, Marcelo Rassy; Cunha, Alan Cavalcanti da is a Environmental Science article available to read on EtoBox.

What is Hydrodynamic Modeling and Simulation of Water Residence Time in the Estuary of the Lower Amazon River about?

Studies about the hydrodynamic behavior in the lower Amazon River remain scarce, despite their relevance and complexity, and the Water Residence Time (Rt) of this Amazonian estuary remains poorly unknown. Therefore, the present study aims to numerically simulate three seasonal Rt scenarios based on a calibrated hydrodynamic numerical model (SisbaHiA) applied to a representative stretch of the lower Amazon River. The following methodological steps were performed: (a) establishing experimental water flow in natural channels; (b) statistically test numerical predictions (tidal range cycles for different hydrologic periods); and (c) simulating velocity fields and water discharge associated with Rt numerical outputs of the hydrodynamic model varied from 14 ≤ Rt ≤ 22 days among different seasonal periods. This change has shown the significant influence of hydrologic period and geomorphological features on Rt. Rt, in its turn, has shown significant spatial heterogeneity, depending on location and stretch of the channels. Comparative analyses between simulated and experimental parameters evidenced statistical correlations higher than 0.9. We conclude that the generated Rt scenarios were co

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Author

de Abreu, Carlos Henrique M.; Barros, Maria de Lourdes Cavalcanti; Brito, Daímio Chaves; Teixeira, Marcelo Rassy; Cunha, Alan Cavalcanti da

Publisher

MDPI AG; Multidisciplinary Digital Publishing Institute (MDPI); Basel: Molecular Diversity Preservation International (MDPI), 2009- (ISSN 2073-4441)

Published

2020

Language

EN

Field

Environmental Science (Physical Sciences)