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ALGE Modeling and Data Needs

ALGE Modeling and Data Needs. Dr. Anthony Vodacek Nina Raqueno Yan Li Center for Imaging Science Rochester Institute of Technology. 3D Hydrodynamic Model. Objective. Spatial data. Model output. Geo-referenced site specific Bathymetry Hourly weather data Inflow and outflow.

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ALGE Modeling and Data Needs

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  1. ALGE Modeling and Data Needs Dr. Anthony Vodacek Nina Raqueno Yan Li Center for Imaging Science Rochester Institute of Technology

  2. 3D Hydrodynamic Model Objective Spatial data Model output • Geo-referenced site specific • Bathymetry • Hourly weather data • Inflow and outflow Remote imagery and ground truth

  3. Bathymetry Grid for Conesus Lake • Coarse bathymetry will be used • for full lake model • But improved resolution will be • needed for each study site

  4. Bathymetry MapperInexpensive method to map nearshore bathymetry • GPS • FishFinder • RIT Datalogger

  5. Bathymetry Mapper Test Site meters Old Orchard Cove

  6. Nearshore bathymetry contours meters

  7. Previous Study of the Niagara Plume 6 hours 12 hours 18 hours 24 hours

  8. Future Work • Data Needs • Modeling Work

  9. Data Needs • Key sites • Sedimentation rates • Macrophyte canopy • Weather (winds, solar irradiance, etc.) • High resolution bathymetry (lake level) • Water temperatures (shelf vs. open lake) • GIS data format (compatibility) and layers • Stream inflows and outflows • Radiosonde data (best station)

  10. Modeling Work- Modification of the models • Macrophyte - affect on flow direction and velocity • Sediment transportation - sediment rates

  11. Physical Resuspension, Deposition, and Settling of Sediments • Mechanisms of sediment dispersion include: • Convection and turbulent diffusion • Stream loading • Gravitational settling • Physical resuspension and disposition at the • sediment-water interface.

  12. Physical Resuspension, Deposition, and Settling of Sediments • The sedimentation rates are dependent on: • The bottom shear stress due to the combined • action of waves and currents • Sediment composition and water content

  13. References • Alfred J. Garrett, John M. Irvine, and Amy D. King, Application of Multispectral Imagery to Assessment of a Hydrodynamic Simulation of an Effluent Stream Entering the Clinch River, Photogrammetric Engineering & Remote Sensing, Vol. 66, No. 3 • Richard L.Miller, and James F. Cruise, Effects of Suspended Sediments on Coral Growth: Evidence • from Remote Sensing and Hydrologic Modeling, • Remote Sensing Environment, 53:177 – 187 (1995)

  14. References (Continued) 3. T. Fischer-Antze, T. Stoesser, and N.R.B. Olsen, 3D numerical modeling of open-channel flow with submerged vegetation 4. Y. Peter Sheng, W.Lick, The Transport and Resuspension of Sediments in a Shallow Lake, Journal of Geophysical Research, Vol. 84, NO. C4

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