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| | Abstract | | We proposed a new 3D resistivity survey using independent full-waveform resistivity meter. Each system is completely independent, incorporating its own power source and GPS module. This system does not require a cable between the current and the potential meters, so it can reduce the large amount of work required for 3D resistivity survey. In this method, three set of potential electrodes were used to obtain two dipole data at right angles, but negative apparent resistivity was sometimes observed due to the relationship between current and potential dipole. Because it was difficult to handle negative values, these data were often deleted in inversion. However, by using two dipole data including negative resistivity converted to amplitude and direction, it became clear that the results were more stable than the conventional inversion method. |
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