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For physical properties of sediment bed, EFDC+ with the erosion rates option 3 uses below input files to configure the initial model conditions for spatially varying physical properties of sediment bed layers, and these files can be created using sediment core datasets by a sediment bed construction tool in EFDC_+ Explorer.
sedb.inp: fraction of each sediment class
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The files sedb.inp, bedlay.inp, bedbdn.inp, and bedddn.inp specify the initial conditions for sediment bed in the model, and the user can create those files using a sediment bed construction tool in EFDC_+ Explorer. To assign the sediment bed initial conditions, the user may click Assign Bed IC button in the Erosion Rate Options frame in the General tap (Figure 1), then the Initialization of Sediment Beds window will appear as shown in Figure 2.
Two options are available in the Grid Cell Options frame to specify the region for sediment bed initialization:
All Grid Cells: EFDC_+ Explorer will will initialize all grid cells in the model domain using a single sediment core file
Only Grid Cells Inside Polygons: EFDC_+ Explorer will will initialize the only grid cells inside the applied polygons using a sediment core file.
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In SEDFlume Measured Erosion Rates matrix, the user may enter the erosion properties measured from each SEDFlume core such as Erosion Multiplier (A), Erosion Exponent (n), and Maximum Erosion Rate (cm/s) for each vertical layer.
The sampling location of each SEDFlume core also needs to be entered in Easting (m) and Northing (m) Coordinates for utilizing the Core Assignment features of EFDC_+ Explorer.
Figure 4 Erosion Rates Option 3 - Core Definitions Tab.
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