Method to obtain standard pseudosections from pseudo pole–dipole arrays

Capability of cross-hole electrical configurations for monitoring rapid plume migration experiments

“…We carried out the inversion of the mixed organized dataset using the dynamic model presented in The inversion of the datasets was carried out using the commercial Res2dinvx64 software (Geotomo software) with the robust inversion method. To simulate the effect of experimental errors, we added noise using the following expression (Bellmunt and Marcuello, 2011):…”

“…Significant resistivity changes during data acquisition can lead to low resolution images and low convergence of data (Wilkinson et al, 2010). The acquisition time is directly related to the amount of data and the multichannel acquisition efficiency (Bellmunt and Marcuello, 2011). As a general rule, increasing the amount of data will increase resolution, but the improvement begins to level off at large amount of data.…”

Enhanced resolution for long electrode ERT

“…shows that four 2‐pole measurements are needed for a single 4‐pole measurement using the principle of superposition. Others have used the same principle to convert a base set of 3‐pole data to a comprehensive 3‐pole set (Blome et al 2011), convert 3‐pole data to 4‐pole data (Candansayar & Başokur 2001; Bellmunt & Marcuello 2011) or convert a particular array of 4‐pole data to any other 4‐pole array (Sri Niwas & Israil 1989). For the 20‐electrode case, we can expect 14 535 non‐reciprocal 4‐pole calculations ( N ), per combinatorial rule: (Rucker et al 2011) which expands to (Xu & Noel 1993; Loke et al 2010) where n is the number of electrodes.…”