{
T-Data Track: Click here to select the column titled Toluene from the pop-up list. Expand this heading
to set the input data filters.
Filter based on G-Values: Leave this unchecked.
Resample at Regularly-Spaced Intervals: Leave this unchecked.
{
Solid Model Name: Click to the right to assign a name for the interpolated model, and type in: toluene
2-14-07
This will be the name assigned to the solid model to be created, with an ".RwMod" file name extension.
! Note how you've included the date in the model name - this can be handy to keep track of which solid
model represents which date measurements. RockWorks does not assign these names automatically.
{Solid Modeling Options: Click on the Options button to the right to establish the modeling settings.
Algorithm (Modeling Method):
! For Time Interval Data, this is important. The default method that RockWorks uses for general
solid modeling is Inverse Distance Anisotropic. While this works well for numerous I-Data
measurements, this isn't the best choice for the limited measurements typical of T-Data.
IDW Advanced: Click in this radio button; note that modeling options are displayed to
the right.
Weighting Exponents: These options allow you to vary the influence of
measurements that lie horizontally versus vertically in relation to each node being
interpolated. The greater the exponent value, the less influence the measurements
will have.
Horizontal: Set this exponent to 2. (normal influence)
Vertical: Set this exponent to 4. (reduced influence)
Search Method: Expand this heading.
All Points: Choose this option so that the program will not limit the search
for measurements to consider when interpolating the node values.
Additional Options:
Dimensions: These define the extents of the output model.
Based on Output Dimensions: Be sure this option is checked.
Confirm Model Dimensions item can be left unchecked (though in your own
work, this is a handy way to double-check the model extents and node spacing).
Decluster: Unchecked.
Add Points: unchecked.
Cutoff - H, Cutoff - V: unchecked.
LogarithM: unchecked. If used, this can be helpful for interpolation of highly
anomalous data.
Smoothing: unchecked.
HiFi: unchecked.
Distance: unchecked.
Polygon: unchecked.
Superface: Check this to activate an upper surface (grid) filter, and click on the tab to
access the settings.
Manual: Click on this option to the right. While Automatic filtering works well for
many project-wide solid models, we want to constrain this model with the water level
surfaces created in the previous lesson.
Grid Model: Click here to browse for the file "Aquifer
1_2_14_2007_top.RwGrd". (Your file name may have a different date
order.)
Buffer Size: Set this to 0.0.
Subface: unchecked.
Tilting: unchecked. If activated, this can be used to apply a tilt to the model.
Warping: unchecked. If activated, this can be used to warp a model based on a
surface.
Faulted: unchecked. If activated, you can use a 3D "fault file" to introduce faults into
your model.
G=Color: unchecked. This is used for color modeling only.
Undefined Nodes: Use this setting, at the bottom of the window, to define the value to
be assigned to the solid model nodes above the water level top and below the water level
base. (All project nodes are present in the model; "filtered" nodes can be set to a specific
value to "hide" them.)
Null (-1.0e27): Choose this option.
{Click OK to close this dialog box.
3.
Create 3-Dimensional Diagram: Check this, and expand this heading to access the diagram settings.
{Diagram Type:
Isosurface: This will create a diagram in which the different G value levels can be represented
as if enclosed within a "skin" that is like a 3-dimensional contour. Within RockPlot3D you can
interactively adjust the minimum T-data value to be enclosed within the isosurface contour.
{
Plot Logs: Check this. The program will generate the 3D logs using the same settings we used in an
earlier lesson in this section.
{
Reference Cage: Check this and click on the Options button to the right.
Dimensions: This should be set to Automatic.
Panels: Click the All Panels - Off button to turn off all of the cage panels.
Grids: Click the All Grids - Off button to turn off all of the cage grid lines.
Axis Labels: Be sure these options are all checked:
Southeast
Base / West
Base / South
Click OK to close this dialog box.
{
Color Scheme: Click the Options button and set the colors you want to use for the minimum and
maximum model values. You can do so by clicking on the small color boxes on either end of the min-max
bar, or click on the bar itself to choose a predefined color ramp.
{
Include Color Legend: Insert a check-mark here.
4. Confirm that the Rules & Filters pane, on the right side of the options window, is still set to apply an Exact
Date filter for 2/14/2007. (Note that the Stratigraphic Rules will be ignored since they don't apply to this T-
Data model.)
{
Spatial (XYZ) Filtering: Leave this unchecked.
5. Click the Process button at the bottom of the T-Data Model window. RockWorks will create two items:
It will interpolate a solid model using the specified project dimensions using the IDW Advanced method of
extrapolating the Toluene concentrations for those areas with no boreholes, using the date-filtered input data.
Nodes which lie above the constraining water surface will be assigned a Null value. The completed model will be
store in the project folder with the name "toluene 2-14-07.RwMod."
RockWorks will then create an isosurface diagram to illustrate the model. The completed diagram will be
displayed in a RockPlot3D tab.
6. View the isosurface model options by double-clicking on the Toluene item that’s listed in the data tree.
The program will display a window listing the Isosurface Options. Here’s a quick summary:
{
Color scheme: This solid model contains "G" values representing Toluene concentrations that range
from a minimum to a maximum. The default scheme will be set to Continuous, to show continuous
gradations between the low and high values. If you wish, you can change the by clicking on the Min-Max
button to the right of the color scheme. In your own work, if you want to display specific concentrations
In document
Tutorial Rockworks
(Page 92-95)