Comparing Measurement Response and Inverted Results of Electrical Resistivity Tomography Instruments
| Autor: | Niels Claes, Burke J. Minsley, Austin Carey, Andrew D. Parsekian, Andy Kass, B. A. Flinchum, Drew Thayer, Kamini Singha, R. E. Harmon, Bradley J. Carr, Emily B. Voytek |
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| Rok vydání: | 2017 |
| Předmět: |
Environmental Engineering
Materials science Observational error Acoustics 0208 environmental biotechnology Contact resistance 02 engineering and technology 010502 geochemistry & geophysics Geotechnical Engineering and Engineering Geology 01 natural sciences Line (electrical engineering) Electrical connection 020801 environmental engineering Geophysics Electrical resistivity and conductivity Electrode Waveform Electrical resistivity tomography 0105 earth and related environmental sciences |
| Zdroj: | D. Parsekian, A, Claes, N, Singha, K, Minsley, B J, Carr, B, Voytek, E, Kass, M A, Harmon, R, Carey, A, Thayer, D & Flinchum, B 2017, ' Comparing measurement response and inverted results of electrical resistivity tomography instruments ', Journal of Environmental & Engineering Geophysics, vol. 22, no. 3, pp. 249-266 . https://doi.org/10.2113/JEEG22.3.249 |
| ISSN: | 1943-2658 1083-1363 |
| Popis: | In this investigation, we compare the results of electrical resistivity measurements made by six commercially available instruments on the same line of electrodes to determine if there are differences in the measured data or inverted results. These comparisons are important to determine whether measurements made between different instruments are consistent. We also degraded contact resistance on one quarter of the electrodes to study how each instrument responds to different electrical connection with the ground. We find that each instrument produced statistically similar apparent resistivity results, and that any conservative assessment of the final inverted resistivity models would result in a similar interpretation for each. We also note that inversions, as expected, are affected by measurement error weights. Increased measurement errors were most closely associated with degraded contact resistance in this set of experiments. In a separate test we recorded the full measured waveform for a sing... |
| Databáze: | OpenAIRE |
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