Steps To Perform a 3D ERI Survey

Perform a 3D ERI Survey with a fast inline 3D array (3D Electrical Resistivity Imaging)
  1. Perform steps 1-11 of the 2D Survey outlined above and collect at least two parallel 2D survey lines.
  2. Assume that the first data scan in steps 1-11 was produced starting at the (0,0) coordinate along the X-axis
  3. Move the next 2D survey line one electrode spacing (ES) parallel to the first line and record the new starting coordinate. I.e. If the electrode spacing is 5 meter then the new location for the second line is (0,5)
  4. Repeat steps 1-11 of the 2D Survey outlined above.
  5. Repeat steps 1-11 by collecting 2 or more parallel 2D lines
  6. Process the multiple parallel 2D lines using the AGI EarthImager 3D
    1. Go to Tools -> Combine 2D Parallel Lines > enter Y offset distance for each line loaded > save files to a new "combined" dataset
    2. Read in the "combined" dataset in EarthImager3D
    3. Set the defaults for a surface survey
    4. Press the Start Button (takes less than a minute)
  7. View and save the figures

Parts of a ERI (Electrical Resistivity Imaging) System