In the General tab, in the Erosion Rate Options frame, the user should select the last option as shown in Figure 1. This option, erosion rate will base on equation E = A*Tau^N with A (Erosion Multiplier), N (Erosion Exponent) elements and Bed Properties Using SEDB, BEDLAY, BEDBDN and BEDDDN. A and N will be defined in Erosion Rates tab as shown in Figure 3.
Those files sedb.inp, bedlay.inp, bedbdn.inp and bedddn.inp are created by EE when the user assign bed initial condition to the model. To assign bed initial condition to the model, the user click Assign Bed IC button, a form of Initialization of Sediment Beds appears as shown in Figure 2.
In the Grid Cell Options frame, there are two options, the user can selects either All Grid Cells or Only Grid Cells Inside Polygons
All Grid Cells: All grid cells of the mode domain will be assigned from a sediment core file
Only Grid Cells Inside Polygons: Only grid cells inside polygons will be assigned from a sediment core file
In the Initialization of Sediment Bed frame
There are three options for initialization of sediment bed as Use Polygon DSM, Use Sediment Core with Grainsize, and Create Uniform Bed. The user selects Use Sediment Core with Grainsize option, then browse to the sediment core files (*.dat) which is created before. How to create the sediment core file is describe in Sediment Bed Construction.
Figure 1 Erosion Rates Option 3 - General tab.
Figure 2 Erosion Rates Option 3 - Initialization of Sediment Bed.
Figure 3 Erosion Rates Option 3 - Erosion Rates tab.