1. Numerical modeling of hydrodynamic circulation in Ichkeul Lake-Tunisia
- Author
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Nejla Tlatli-Hariga, Hajer Ouni, Jamila Tarhouni, M. C. Sousa, João Pedro Pinheiro, João Miguel Dias, N. Ben M’Barek, and Américo S. Ribeiro
- Subjects
020209 energy ,Ichkeul Lake ,Temperature salinity diagrams ,Wetland ,02 engineering and technology ,020401 chemical engineering ,ddc:330 ,0202 electrical engineering, electronic engineering, information engineering ,0204 chemical engineering ,Hydrology ,TSM ,geography ,geography.geographical_feature_category ,Global warming ,Lake ecosystem ,Water clarity ,Siltation ,Water level ,Salinity ,Sedimentary material ,General Energy ,Ramsar site ,Environmental science ,lcsh:Electrical engineering. Electronics. Nuclear engineering ,Hydrodynamic circulation ,Delft3D-FLOW ,lcsh:TK1-9971 - Abstract
The Ichkeul Lake ecosystem, Northern of Tunisia, has been registered as a biosphere reserve in 1977 (MAB-UNESCO Convention), a UNESCO World Heritage site in 1979, and a RAMSAR site in 1980. Damming and global warming drought drastically diminished the fresh water supply to this lake. This leads to water level and salinity fluctuation throughout the year. Consequently, the water clarity of this shallow wind-stressed lake was altered and if this siltation continues to increase, will seriously affects the hydromorphology and ecology of this wetland. Therefore, to study the hydrodynamic water circulation in the lake and the transport of the Total Suspend Matter (TSM), hydrodynamic and transport models were calibrated and applied to this environment. Numerical model predictions based on water level, temperature and salinity sensitivity to the bed roughness show that the Delft 3D-Flow model reproduced well the measured data with RMSE < 0.027 for water level. Keywords: Delft3D-FLOW, Hydrodynamic circulation, Ichkeul Lake, Sedimentary material, TSM, Water clarity
- Published
- 2020
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