Modeling the influence of river discharge on salt intrusion and residual circulation in Danshuei River estuary,Taiwan |
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| Authors: | Wen-Cheng Liu Wei-Bo Chen Ralph T. Cheng Ming-Hsi Hsu Albert Y. Kuo |
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| Affiliation: | 1. Department of Civil and Disaster Prevention Engineering, National United University, Miao-Li 36003, Taiwan;2. Department of Civil Engineering, National Taiwan University, Taipei 10617, Taiwan;3. US Geological Survey, Menlo Park, CA 94025, USA;4. Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei 10617, Taiwan;5. National Center for Ocean Research, National Taiwan University, Taipei 10617, Taiwan |
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| Abstract: | A 3-D, time-dependent, baroclinic, hydrodynamic and salinity model was implemented and applied to the Danshuei River estuarine system and the adjacent coastal sea in Taiwan. The model forcing functions consist of tidal elevations along the open boundaries and freshwater inflows from the main stream and major tributaries in the Danshuei River estuarine system. The bottom friction coefficient was adjusted to achieve model calibration and verification in model simulations of barotropic and baroclinic flows. The turbulent diffusivities were ascertained through comparison of simulated salinity time series with observations. The model simulation results are in qualitative agreement with the available field data. |
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| Keywords: | 3-D model Residual circulation Salt intrusion Danshuei River estuarine system and coastal sea Freshwater discharge |
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