Abstract
Seawater intrusion is a severe issue and is a main cause of serious freshwater scarcity during the dry season in the Mekong Delta. Insights into seawater intrusion processes and its controlling factors are needed to adaptation straterigies. In this paper, we use long-term salinity obvervation data and hydraulic modelling to simulate the salinization processes (spatial–temporal salinity distribution and concentration) in the context of changes in upstream discharge and tidal regimes over 20 years. The seawater intrusion model is based on DHI MIKE 11 software which is an one-dimensional equations of continuity, momentum conservation and transport in natural waters. In addition, longitudinal simulations along the Tien River mouth illustrate different hydrodynamic conditions of the river, help reproduce the observable salinity trends and contribute to a better understanding of this natural phenomenon. The Mike 11 model allows a quick assessment of saline intrusion in the Tien River mouth to predict a 4‰ salty border for agricultural production and a 0.3‰ salty border for domestic water exploitation for irrigation systems in Ben Tre to help ensure the plan to use water for production and daily life in the dry season 10 days in advance.
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Pham, T.T.B. et al. (2023). Seawater Intrusion Processes Along the Tien River Mouth in the Period 2000–2020. In: Vo, P.L., Tran, D.A., Pham, T.L., Le Thi Thu, H., Nguyen Viet, N. (eds) Advances in Research on Water Resources and Environmental Systems. GTER 2022. Environmental Science and Engineering. Springer, Cham. https://doi.org/10.1007/978-3-031-17808-5_2
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DOI: https://doi.org/10.1007/978-3-031-17808-5_2
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