EnviroInsite training workshop - Advanced contouring methods


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Presentation of advanced methods in generation of contours in EnviroInsite

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EnviroInsite training workshop - Advanced contouring methods

  1. 1. Contouring – Advanced Issues EnviroInsite Training Workshop March 2013
  2. 2. Kriging Range in 1-D Interpolation measurement value ~Range Interpolating measured values onto 1-D Grid EnviroInsite Training
  3. 3. Kriging Range in 2D Interpolation EnviroInsite Training
  4. 4. Grid Tips • Use smallest number of rows / columns that provides reasonable result • Start with small number of rows / columns and increase for final plot • Change grid bounds (horizontal and vertical) to slice through contour Advanced Issues in Contouring
  5. 5. Kriging Tips • Spherical model typically works best • Increasing a_max / a_min smooths result • For contaminant plumes – set angle along axis and increase a_max relative to a_min • Generally don’t change sill / nugget Advanced Issues in Contouring
  6. 6. Other Contouring Options • Calculate volume within each contour shell (only for 3d) • Log Transform – good for contaminant data • Manual Label Placement Advanced Issues in Contouring
  7. 7. Advanced Issues in Contouring Hands-on Exercise