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Effect of bathymetric changes on residence time in Buenaventura bay (Colombia)
Efecto de los cambios batimétricos sobre el tiempo de residencia en la bahía de Buenaventura (Colombia)
DOI:
https://doi.org/10.15446/dyna.v86n211.79649Palabras clave:
Residence time, Hydrodynamic model, Particle tracking model (en)Tiempo de residencia, Modelo hidrodinámico, Modelo de trayectoria de partícula (es)
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In order to study the effects of dredging on the residence time of the water in Buenaventura Bay, a 2D finite elements hydrodynamic model was coupled with a particle tracking model. After calibrating and validating the hydrodynamic model, two scenarios that represented the bathymetric changes generated by the dredging process were simulated. The results of the comparison of the simulated scenarios, showed an important reduction in the velocities fields that allow an increase of the residence time up to 12 days in some areas of the bay. In the scenario without dredging, that is, with original bathymetry, residence times of up to 89 days were found.
Para estudiar los efectos del dragado sobre el tiempo de residencia del agua en la bahía de Buenaventura, se acopló un modelo hidrodinámico de elementos finitos en dos dimensiones y un modelo de trayectoria de partícula. Luego de calibrado y validado el modelo hidrodinámico, fueron simulados dos escenarios que contrastaron los cambios batimétricos generados por el proceso de dragado. Los resultados de la comparación de los escenarios simulados mostraron una reducción considerable en los campos de velocidades que permiten un aumento del tiempo de residencia hasta de 12 días en algunas zonas de la bahía. En el escenario sin dragado, es decir con batimetría original se encontraron tiempos de residencia hasta de 89 días.
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1. A.B. Fortunato, P. Freire, B. Mengual, X. Bertin, C. Pinto, K. Martins, T. Guérin, A. Azevedo. (2021). Sediment dynamics and morphological evolution in the Tagus Estuary inlet. Marine Geology, 440, p.106590. https://doi.org/10.1016/j.margeo.2021.106590.
2. J. Reyes-Rojas, M. Panesso-Guevara, G. Duque. (2023). Influence of maintenance dredging on polychaete community composition in an estuary (Tropical Eastern Pacific). International Journal of Environmental Science and Technology, 20(10), p.10621. https://doi.org/10.1007/s13762-022-04722-7.
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