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Título: | Subsurface Mixing Dynamics Across the Salt-Freshwater Interface |
Autor: | De Vriendt, Kevin CSIC ORCID; Le Borgne, T.; Pool, María CSIC ORCID; Dentz, Marco CSIC ORCID | Palabras clave: | Mixing Analytical model Coastal groundwater Flow deformation Numerical modeling Seawater intrusion |
Fecha de publicación: | 16-abr-2022 | Editor: | European Geosciences Union | Citación: | Geophysical Research Letters 49 (7): e2021GL097094 (2022) | Resumen: | Mixing along the salt-freshwater interface is critical for geochemical reactions, transport, and transformation of nutrients and contaminants in coastal ecosystems. However, the mechanisms and controls of mixing are not well understood. We develop an analytical model, based on the coupling between flow deformation and dispersion, which predicts the mixing dynamics along the interface for steady-state flow in coastal aquifers. The analytical predictions are compared with the results of detailed numerical simulations, which show that nonuniform flow fields, inherent to seawater intrusion in coastal aquifer, result in a non-monotonic evolution of mixing width and mixing rates along the interface. The analytical model accurately captures these dynamics over a range of freshwater flow rates and dispersivities. It predicts the evolution of the mixing width and mixing rates along the interface, offering a new framework for understanding and modeling mixing and reaction processes in coastal aquifers. | Versión del editor: | https://doi.org/10.1029/2021GL097094 | URI: | http://hdl.handle.net/10261/270426 | DOI: | 10.1029/2021GL097094 | ISSN: | 00948276 |
Aparece en las colecciones: | (IDAEA) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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2021gl097094-sup-0001-supporting information si-s01.pdf | Material suplementario | 261,78 kB | Adobe PDF | Visualizar/Abrir |
Geophysical Research Letters - 2022 - De Vriendt - Subsurface Mixing Dynamics Across the Salt‐Freshwater Interface.pdf | Artículo principal | 4,69 MB | Adobe PDF | Visualizar/Abrir |
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