Traverses Overview

Traverses are lines or surfaces of known orientation on which joint / discontinuity data has been collected. Traverses are defined in the Traverse Information Dialog and assigned to joint measurements using a Traverse ID. See the following topics for details.

• Traverse Information Dialog
• Traverse Type
• Traverse ID
• Data Format / Traverse Format
• Traverse Column

Traverses are used for the following purposes in Dips:

• To group data units according to the traverses on which the data was collected (e.g., linear scan lines, planar traverses, borehole traverses), using the Traverse ID.
• To weight the data to correct for measurement bias. Weighting is used when the Terzaghi Weighting option is applied to contour or rosette plots. It is also used in the calculation of weighted mean vectors, when Sets are created, and for Kinematic Analysis when the weighting is applied.
• Traverses can be used to combine data with different orientation formats (e.g. dip / dipdirection and strike / dip data) within the same Dips data file using the Data Format option.
• Traverses are essential for defining and processing oriented core data using either Linear BH Oriented Core or Curved BH Oriented Core Traverse types.

To enter Traverse information, select Traverses in the Analysis menu, and enter data in the Traverse Information dialog.

Entering Borehole Data into Dips

If your data is from an oriented core (alpha/beta values) then you use the Borehole Traverse option in Dips.

See this related article for more information: Can I convert alpha/beta from an oriented core drilling into dip/dip direction or strike/dip data?

If your borehole data has already been processed into true dip and dip direction, then you do not use the borehole Traverse option. In this case, you can define the borehole as a linear Traverse (for the purpose of using the Terzaghi weighting for bias correction).

See this related article for more information: How can I correct the bias of televiewer data (dip and dip direction) in Dips?

NOTE: If the borehole is curved, then you can split the Traverse into approximately linear sections and define a separate Traverse for each section.