Geo-electrical signature of dissolution and precipitation processes in a synthetic carbonate sample

This work has been published in Rembert, F., Jougnot, D., Luquot, L., Guérin, R. (2022) Interpreting self-potential signal during reactive transport: application to calcite dissolution and precipitation, Water, 14(10), 1632, doi:10.3390/w14101632.

We present a dataset of geo-electrical monitoring of an experiment of calcite dissolution and precipitation in a column filled with calcite grains and equipped with two current electrodes at its extremities and four aligned measurement electrodes on its side (P₁, P₂, P₃, and P₄). This dataset comprises measurements of spectral induced polarization (SIP), self-potential (SP), inlet and outlet pore water electrical conductivity (EC), room temperature, and outlet pore water ionic concentrations, pH, and alkalinity.

The experiment is divided into 3 stages: initialization, dissolution, and precipitation. These experimental stages are mentioned in SIP filenames as “init”, “HCl”, and “precip”, respectively.

SIP is acquired on four channels: channels 1, 2, and 3 correspond to portions of the column at the upstream (P₁-P₂), middle (P₂-P₃), and downstream (P₃-P₄), channel 4 corresponds to a mean value (P₁-P₄). Each data file is in the .csv format and the logic of the filename is: “SIP-year-month-day-experimental-stage-number”.csv

SP is acquired on three channels (P₁-P₄, P₂-P₄, and P₃-P₄) using the total field method with the last electrode (P₄) as the reference electrode. Each data file is in the .txt format and the logic of the filename is: “SP-time-period”.txt