Investigation of cable effects in spectral induced polarization imaging at the field scale using multicore and coaxial cables

• DOI: 10.1190/geo2019-0552.1
• Publication Date: 2020-10-14T07:16:44Z
• Authors: Adrian Flores Orozco; Lukas Aigner; Jakob Gallistl
• Keywords: Coaxial; Coaxial cable

The spectral induced polarization (SIP) method has emerged as a well-suited laboratory technique to characterize hydrogeologic and biogeochemical parameters in soil samples. However, field applications of the SIP imaging are still rare, which can be attributed particular care required minimize contamination data by electromagnetic coupling. To date, procedures rely on use two different cables separating current potential dipoles improve quality readings, although this increases efforts might reduce depth investigation or spatial resolution data. overcome these limitations, we have investigated single coaxial cable, an alternative simplify procedures. We evaluate collected with same measuring device using cable combination multicore lengths manufacturers. Data sets reveal significantly lower number outliers high consistency between phase-lag even for measurements five times longer than length profile. Furthermore, improved deeper (with signal-to-noise ratio) comparison separate cables. Our results demonstrate that permit collection readings similar those used resistivity surveys.