1. XS2D COMPONENT

2. Outline  You can create 2D cross sections in ArcGIS  Cross sections are made of real GIS features  Cross sections use a (S, Z) coordinate system  Subsurface Analyst helps you create cross sections within ArcMap  Manage cross sections within a geodatabase

3. Subsurface Visualization Layers of 3D volumes that are largely unseen ? ? Visualizing the subsurface can be challenging

4. Cross Sections …And interpret the rest We can sample the subsurface… AA’ Map A A’Wells Section A-A’ help us understand local geology Cross sections help us understand local geology

5. GIS Datasets Spatial and attribute relationships tie features together … Borehole log Section lines Wells Raster surfaces …Creating the connectivity we need to construct meaningful cross sections from GIS datasets You can create cross sections from GIS datasets Geologic features

6. GIS Features Works with your ArcGIS tools Layer symbology, attributes, geodatabase storage, editing… real GIS features Cross section features are real GIS features

7.  Part of the Arc Hydro Groundwater data model  Is included in the hydrostratigraphy component  XS2D feature classes have a XS2D prefix  They exist in a special coordinate system that translates vertical coordinates so they can be viewed in ArcMap XS2D component Additional data: XS2D_Line, XS2D_Polygon, XS2D_Point…

8. Common Cross Section Features Cross Section Panel Panel Divider BorelineBoreline Major Grid Minor Grid

9. Additional Features Arc Hydro Tools You can add additional features using the Arc Hydro Tools Saltwater Interface Surficial Geology Or create your own features and annotation

10. SectionLine Features belong to a section line Cross sections belong to a section line A set of cross section feature classes per section line…  Simple 2D polylines  Define the cross section in map view

11.  Are indexed with a HydroID – the unique identifier within the geodatabase  All vertical datasets will be related to the HydroID of the SectionLine SectionLine Features

12.  Use the Create SectionLine Feature Class tool to create a new feature class  Digitize new section lines using the ArcMap editing tools  Make sure you assign a HydroID to the new features Creating SectionLines

13.  Central part of the XS2D component  Keeps track of the feature classes in all cross sections  SectionID is a key attribute = HydroID of a SectionLine feature XS2D Catalog

15. Cross Section Data proximity to the section line You add data by proximity to the section line Built from standard GIS operations like ‘Select By Location’ and ‘Intersect’ A A’ A A’ AA’ A A’ Adding Nearby Wells Adding Outcrops

16. Cross Section Coordinates Cross sections use a (Distance, Elevation) coordinate system And includes vertical exaggeration… Each system is unique to the cross section… x y S Z S

17. Vertical Exaggeration Features store exaggerated values, while the grid shows “real” values S z P1 P2 10x Exaggeration PointCoordinates10x Exaggerated Elevation (Feature Vertex Value) Real Elevation (Grid Value) P1(550, 750)75075 P2(550, 400)40040

18.  Standard XS2D feature classes XS2D Feature Classes

19.  The Data Frame is the canvas where cross sections are drawn Data Frame Edit Print Draft

20. 2D and 3D Transformations You can convert from 2D to 3D and back again

21. Building Cross Sections You can build your own workflows for building cross sections

22. Example Workflow 1. Create SectionLines – sketch cross section lines that are the base for creating cross sections.

23. Example Workflow 2. Select wells – wells are related with borehole data Tip: Select wells within a distance of a section line

24.  Click on the Section Line  Choose:  Features to Include  Vertical Exaggeration  Grid Line Spacing Example Workflow 3. Run the cross section wizard Output is a new cross section data frame with features created

25. Example workflow 4. Import additional data

26. Example Workflow 5. Create panels using standard ArcMap editing tools

27.  Helps control the digitization process  Can manage snapping properties and priorities Snapping Environment Vertex Edge End

28.  Use ArcMap editing tools  Use topology tools Editing Tools Trace Sketch

29. Example Workflow 6. Arrange the layout Add: Legends Annotation Additional Cross Sections Set: Data Frame Properties Grid Line Appearance

30. Workflow II – image registration  Start from existing cross section images  Load and register the images to an existing SectionLine  Wizard helps create necessary features (grid lines, panel dividers, panels) based on the image registration process Workflow II – image registration

31. Image registration wizard Register the image using vertical and horizontal lines

32. Image registration wizard Result is a new data frame with registered image + XS2D feature classes

33. Additional data - faults

34. Adding data - raster data

35. Adding data – log plots

36. Key Points  You can create 2D cross sections in ArcGIS  Cross sections are made of real GIS features - can take advantage of all the ArcMap capabilities  Cross sections use a (S, Z) coordinate system  Subsurface Analyst helps you create cross sections – basic tools, Xs2D Wizard