International Journal of Geophysics / 2012 / Article / Fig 6

Research Article

Experimental Studies on the Changes in Resistivity and Its Anisotropy Using Electrical Resistivity Tomography

Figure 6

The illustration of extracting apparent resistivity set for Wenner- array. In the studies on apparent resistivity anisotropy at point O, we need the apparent resistivity data arranged along the vertical dash line. According to the characteristics of Wenner- array, the apparent resistivity measurements could be extracted every one “n” factor. That is, the apparent resistivity measurements just corresponding to odd “n” factors and on the vertical dash line will be extracted out. Black solid circles represent the extracted data.