Brooks and Corey (1964) Fit

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SVSoils

 

 

The Brooks and Corey dialog contains the equation parameters necessary to mathematically represent the SWCC curve in accordance with the methodology published by Brooks and Corey (1964). A description of the theory can be found in the SVSOILS Theory Manual.

 

ac: The ac field refers to one of the fitting parameters in the Brooks and Corey (1964) equation. The ac parameter is related to the air-entry value of the soil and is often referred to as the bubbling pressure.

 

nc: The nc field refers to another fitting parameter in the Brooks Corey (1964) equation. This parameter is related to the steepness of the SWCC and is often referred to as the pore-size index.

 

Fit: The Fit indicates if experimental data has been fit with the Brooks and Corey (1964) equation.

 

Error: The Error field shows the difference between the fitted values and the laboratory data as measured in terms of R2.

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Residual WC, wr: The Residual WC is the calculated residual volumetric water content associated with the Brooks and Corey (1964) equation.

 

AEV: The AEV field shows the air-entry value calculated from the fit of the Brooks and Corey (1964) equation (kPa).

 

Max. Slope: The Max. Slope refers to the maximum slope (on a log-log plot) of the Brooks and Corey (1964) fit of the soil-water characteristic curve (unitless).

 

Graph:

 Click the graph button at the bottom of the dialog to display a graph.