Layer Properties

When a model layer is selected in the Model Explorer, all of the properties of that layer are displayed in the Properties panel. Any or all of the properties may be edited. Changes to each field are automatically applied as they are made.

Layer Properties
Name	Specify a descriptive name for the layer. Select check box if layer is pierceable.
Surface
Type	Select the data type used to describe the elevation of the top surface. Only "Grid" is allowed.
Elevation	When the surface grid is selected and validated, the statistics are displayed.
Density
Type	The density may be provided as either: a Constant (real number), Lateral Distribution (from a grid),Voxel Distribution, Vertical Distribution (already defined for the model), or Density from Velocity (real number). The Density from Velocity option is only available if the model originated as a Time model, with a valid velocity and the velocity-to-density conversion set for the layer. Depending upon which source is selected above, different values are required. You might enter a constant density, select an appropriate choice from a list, or browse to select the appropriate data file.
Susceptibility
Type	Select the susceptibility type as Constant or Lateral Distribution (grid).
Susceptibility	Depending upon which source is selected, you must enter a constant susceptibility, or browse to select an appropriate grid. When the grid is selected and validated, the statistics of the grid are displayed and fields to specify remanent magnetization are hidden.
Remanence
Magnitude	Specify a constant remanent magnetization, in µcgs.
Inclination	Specify a constant value, in degrees.
Declination	Specify a constant value, in degrees.
Velocity (for Time model only)
Method	Select one of the methods for converting velocity to density, or "No conversion".
Velocity	specify the layer velocity, in the specified units.

Application Notes

• Selecting a property source type other than "constant" requires an appropriate property source, if one is not already loaded for the layer. If several types have been previously loaded for this layer, the active type may be changed without having to reload them.

• Validation of each field or selection occurs when the focus is changed to another field. Changes will not be applied if they are invalid and the focus cannot be switched until errors are corrected. If layers are switched prior to the last change passing validation, changes may be lost.

• Magnetic properties for a layer may include constant susceptibility and constant remanent magnetization, or variable susceptibility and no remanent magnetization.