Numerical and laboratory investigations of electrical resistance tomography for environmental monitoring

  • Heinson Tania Dhu Graham (Co-operative Centre for Landscapes Environment and Mineral Exploration School of Earth and Environmental Sciences University of Adelaide)
  • Published : 2004.02.01

Abstract

Numerical and laboratory studies have been conducted to test the ability of Electrical Resistance Tomography-a technique used to map the electrical resistivity of the subsurface-to delineate contaminant plumes. Two-dimensional numerical models were created to investigate survey design and resolution. Optimal survey design consisted of both downhole and surface electrode sites. Resolution models revealed that while the bulk fluid flow could be outlined, small-scale fingering effects could not be delineated. Laboratory experiments were conducted in a narrow glass tank to validate theoretical models. A visual comparison of fluid flow with ERT images also showed that, while the bulk fluid flow could be seen in most instances, fine-scale effects were indeterminate.

References

  1. Atekwana, E. A., Sauck, W.A., Abdel Aal, 0.7.., and Werkema, D.D. Jr., 2002,Geophysical investigation of vadose zone conductivity anomalies at a hydrocarbon contaminated site: implications for the assessment of intrinsic bioremediation: Joumal of Environmental and Engineering Geophysics, 7,103-110
  2. Barrett, B., Heinson, G., Hatch, M., and Telfer, A., 2002, Geophysical methods in saline groundwater studies: locating perched water tables and fresh-water lenses: Exploration Geophysics, 33, 151-121
  3. Bevc, D., and Morrison, H.F, 1991, Borehole-to surface electrical resistivity monitoring of a salt water injection experiment: Geophysics, 56, 769-777
  4. Chambers, J.E., Ogilvy, R.D., Meldmm, P.I, and Nissen, J., 1999, 3D resistivity imaging of buried oil and tar contaminated waste deposits: European Joumal ofEnvironmental and Engineering Geophysics, 4, 1-13
  5. Curtis, A., 1999a, Optimal experimenl design: cross-borehole tomographic examples: Geophysical Journal International, 136, 637-650
  6. Curds, A., 1999b, Optimal design of focused experiments and surveys: GeophysicalJoumal International, 139, 205-215
  7. Curtis, A., and Maurer, H., 2000, Optimizing, the design of geophysical experiments: Is it worthwhile?: The Leading Edge, 19, 1058-1062
  8. Daily, W., and Owen, E., 1991, Cross-borehole resistivity tomography: Geophysics, 56, 1228-1235
  9. Daily, W., Ramirez, A., LaBrecque, D., and Barber, W., 1995, Electrical resistance tomography experiments at the Oregon Graduate Institute: Joumal of ApptiedGeophysics, 33, 227-237
  10. Frind, E.O., 1982, Simulation of long term density-dependent transport in groundwater: Advanced Water Resources, 5, 73-97
  11. Frohlich, R.K., and Urish, D.W., 2002, The use of geoelectrics and test wells for the assessment of groundwater quality of a coastal industrial site: Journal of AppliedGeophysics, 50, 261-278
  12. Granato, G.E., and Smith, K.P., 1999, Robowell: An automated process for monitoring ground water quality using established sampling protocols: Ground Water Monitoring and Remediation, 18, 81-89
  13. Hassanizadeh, S.M., and Leijnse, T, 1988, On the modelling of brine transport in porous media: Water Resources Research, 24, 321-330
  14. Huyakom, P.S., Andersen, P.F., Mercer, J.W., and White, H.O., 1987, Saltwater intrusion in aquifers: development and testing of a three-dimensional finite element model: Water Resources Research, 23, 293-312
  15. Johnson, V.M., Tuckfield, R.C., Ridley, M.N., and Anderson, R.A., 1996, Reducing the sampling frequency of groundwater monitoring wells: Environmental Scienceand Technology, 30, 355-358
  16. LaBrecque, D. J., 1989, Cross-borehote resistivity modelling and model fitling'. PhDThesis, University of Utah
  17. LaBrecque, D. J., Ramirez, A. L., Daily, W. D., Binley, A. M. and Schima, S. A., 1996a, ERT monitoring of environmental remediation processes: MeasurementScience and Technoloey, 7, 375-383
  18. LaBrecque, D.J. Miletto, M., Daily, W., Ramirez, A., and Owen, E., 1996b, The effects of noise on Occam's inversion of resistivity tomography data: Geophysics, 61,538-548
  19. LaBrecque, D., and Ward, S., 1998, Two-dimensional inversion of cross-borehole resistivity data using multiple boundaries: 58th Annual International Meeting, Society of Exptoration Geophysics, Extended Abstracts, 194-197
  20. Loke, M.H,, and Barker, R.D., 1996a, Rapid least-squares inversion of apparent resistivity pseudosections by a quasi-Newton method: Geophysicat Prospecting, 44, 131-152
  21. Loke, M.H., and Barker, R.D., 1996b, Practical techniques for 3D resistivity surveys and data inversion; Geophysical Prospecting, 44, 499-523
  22. Newmark, R.L., Daily, W.D., Kyle, K.R., and Ramirez, A. L., 1998, Monitoring DNAPL pumping using integrated geophysical techniques: Journal ofEnvironmental and Engineering Geophysics, 3, 7-13
  23. Newmark, R.L., Daily, W.D., Kyle, K.R., and Ramirez, A. L., 1998, Monitoring DNAPL pumping using integrated geophysical techniques: Journal of Environmental and Engineering Geophysics, 3, 7-13
  24. Nobes, D.C., 1996, troubled waters: Environmental applications of electrical and electromagnetic methods: Surveys in Geophysics, 17, 393-454
  25. Ogilvy, R.D., Meldrum, P.I., and Chambers, J.E., 1999, Imaging of industrial waste deposits and buried quarry geometry by 3D resistivity tomography: European Joumal of Environmental and Engineering Geophysics, 3, 103-113
  26. Oostrom, M., Dane, J.H., Guven, 0., and Hayworth, J.S., 1992, Experimentalinvestigation of dense solute plumes in an unconfmed aquifer model: Water Resources Research, 28, 2315-2326
  27. Ramirez, A., Daily, W., LaBrecque, D., Owen, E., and Chesnut, D., 1993, Monitohng underground steam injection process using electrical resistance tomography: Water Resources Research, 29, 73-87
  28. Slater, L.D., Binley, A., and Brown, D., 1997, Electhcal imaging of fractures using groundwater salinity change: Ground Water, 35, 436-442
  29. Simmons, C.T., and Narayan, K.A., 1998, Modelling density-dependent flow and solute transport at the Lake Tutchewop saline disposal complex, Victoria: Journalof Hydrolgy, 206, 219-236
  30. Simmons, C-T., Piehni, M.L., and Hutson, J.L., 2002, Laboratory investigation of variable-density flow and solute transport in unsaturated-saturated porous media: transport in Porous Media, 47, 215-244
  31. Sullivan, E., and LaBrecque, D., 1998, Optimization of ERT Surveys: Proceedings of the Symposium on the AppUcation of geophysics to environmental and engineering problems (SAGEEP), 571-581
  32. Thpp, A.C., Hohmann, G.W., and Swift, C.M. Jr, 1984, Two dimensional resistivity inversion: Geophysics, 49, 1708-1717
  33. Zhou, Y., 1996, Sampling frequency for monitoring the actual state of ground water systems: Joumal of Hydrolosy, 180, 301-318
  34. Zhou, B., and Greenhalgh, S.A., 1997, A synthetic study on crosshole resistivity imaging with different electrode arrays: Exploration Geophysics, 28, 1-5
  35. Zhou, B,, and Greenhalgh, S.A., 1999, Explicit expressions and numerical computation for the Fr&het and second derivatives in 2.5-D Helmholtz equation inversion: Geophysical Prospecting, 48, 443-468
  36. Zhou, B., and Greenhalgh, S.A., 2000, Crosshole resistivity tomography using different electrode configuration: Geophysical Prospecting, 48, 887-912