Three-Dimensional Simulation of Flow, Salinity, Sediment, and Radionuclide Movements in the Hudson River Estuaryby Yasuo Onishi, Pacific Northwest Lab, Richland, WA, USA,
Donald S. Trent, Pacific Northwest Lab, Richland, WA, USA,
Abstract: The three-dimensional, finite difference model FLESCOT was applied to a 106-km reach of the Hudson River estuary in New York between Chelsea and the mouth of the river. It predicted the time-varying, three-dimensional distributions of tidal flow, salinity, three separate groups of sediments, and a radionuclide in both dissolved and particulate forms for over 40 days. The model also calculated riverbed elevation changes caused by sediment deposition and bed erosion, bed sediment size distribution and armoring, and distributions of the particulate **1**3**7Cs sorbed by sand, silt, and clay in the bed.
Subject Headings: Three-dimensional flow | Three-dimensional models | Flow simulation | Sediment transport | Hydrologic models | Radioactive materials | River flow | Salinity | Tides | Rivers and streams | River and stream beds | Flow distribution | Computer models | Hudson River | North America | United States | New York
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