Spatial distribution of thawed and frozen ground based on areal electrical tomography data

The article presents the results of a study on the spatial distribution of thawed and frozen grounds in the permafrost zone using three-dimensional electrical resistivity tomography. The aim of the research was to determine the boundaries between frozen and thawed rocks, as well as to identify the groundwater level. The study utilized data from electrical resistivity tomography, drilling, and borehole thermometry. Based on the obtained data, a three-dimensional geoelectrical model was constructed, which aligns well with the available geological information. It was found that anomalous zones with elevated temperatures correlate with areas of reduced electrical resistivity, indicating the presence of taliks. Maps of the groundwater level and the top of permafrost were created, reflecting the geological features of the studied area. The results confirm the effectiveness of the three-dimensional model for data interpretation in complex geological conditions and can be applied to solve similar problems.