| dc.description.abstract | The Electrode Resistivity Tomography method was used to many years. In previous studies, they compared many properties between different electrode arrays.In this study, We discuss not only resolution but also lateral effect for different electrode arrays in this study. We chose Edge-Gradient (EG) array, Pole-Dipole (PD) array, Pole-Pole (PP) array and Wenner-Schlumberger (WS) array to do the two tests. In first test, we set survey line near the buried object and then do measuring. After measuring, move survey line leave the buried object 20cm, 40cm, 60cm and 80cm respectively and then do the measuring. Finally, move survey line to 8m measure the background information in first site. In second test, we put artificial shallow conductor upon the survey line and then do measuring. After measuring, move artificial shallow conductor leave the survey line 10cm, 20cm, 30cm and 40cm respectively and then do the measuring. Finally, we remove the artificial shallow conductor to measure the background information in second site. We use resistivity image to discuss the resolution , which survey line near the target in two tests. And then discuss the lateral effect by the variation of resistivity image during moving survey or moving artificial shallow conductor. The result of resolution, Wenner-Schlumberger array and Eege-Gradient array can get better resolution images than Pole-Pole array and Pole-Dipole array. And the lateral effect of Wenner-schlumberger array is strongest in this study
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