Calculates the groundwater seepage velocity vector (direction and magnitude) for steady flow in an aquifer.
[Visual Basic .NET] Public Function DarcyVelocity ( _ ByVal headRaster As IGeoDataset, _ ByVal porosityRaster As IGeoDataset, _ ByVal thicknessRaster As IGeoDataset, _ ByVal transmissivityRaster As IGeoDataset _ ) As IGeoDataset
[C#] public IGeoDataset DarcyVelocity ( IGeoDataset headRaster, IGeoDataset porosityRaster, IGeoDataset thicknessRaster, IGeoDataset transmissivityRaster );
[C++]
HRESULT DarcyVelocity(
IGeoDataset* headRaster,
IGeoDataset* porosityRaster,
IGeoDataset* thicknessRaster,
IGeoDataset* transmissivityRaster,
IGeoDataset** residualDataset
);
[C++]Parameters
headRaster [in]headRaster is a parameter of type IGeoDataset
porosityRaster [in]porosityRaster is a parameter of type IGeoDataset
thicknessRaster [in]thicknessRaster is a parameter of type IGeoDataset
transmissivityRaster [in]transmissivityRaster is a parameter of type IGeoDataset
residualDataset [out, retval]residualDataset is a parameter of type IGeoDataset
Product Availability
Remarks
|
headRaster |
Raster containing values of groundwater head elevation for each cell in the raster. The head is typically an elevation above some datum, such as mean sea level. |
|
porosityRaster |
Raster containing values of effective formation porosity for each cell in the raster |
|
thicknessRaster |
Raster containing values of saturated thickness for each cell in the raster |
|
transmissivityRaster |
Raster containing values of formation transmissivity for each cell in the raster The transmissivity of an aquifer is defined as the hydraulic conductivity K times the saturated aquifer thickness b, as units of length squared over time. This property is generally estimated from field experimental data such as pumping tests. |
- The method returns a reference to a Raster object.
- Use a RasterBandCollection for output direction and magnitude rasters.
- Read the Working with ArcGIS Spatial Analyst objects technical document for general information on implementing Spatial Analyst operations.