Electrical Resistivity Tomography

Electrical Resistivity Tomography (ERT) is used to study soil thickness and conductivity differences and to analyze rock surfaces. The method is particularly useful for providing initial information for design on the characteristics of a construction site. The most common sites to be built are roads, mining infrastructure and geostructures. 

 


 

Method

ERT responds to natural conductivity variations (ores, hydrous structures), but can also be applied to man-made sources of variation, such as environmentally harmful substances.

Electrodes are spread on the ground and connected to a transmitter and receiver before measurement. The achievable measurement depth depends on the measurement configuration and soil conditions, and is related to the resolution of the results. Different measurement configurations can be used and are always designed based on the research object.

Geovisor suorittamassa vastusluotausmittausta
Geovisorin vastusluotaukseen käytettävää laitteistoa
Vastusluotausmittauksessa käytettävää laitteistoa

Equipment and data

The equipment is usually IRIS Syscal Pro or Abem Terrameter or something similar. Geovisor has excellent connections to equipment rental companies and an extensive cooperation network, so we are sure to find the equipment that suits your needs. Our staff has diverse experience with various geophysical equipment.

Customers always receive quality-assured raw data from the surveys. In addition, we process and analyze the data. The selected level of reporting and customer familiarization with the survey results are carried out as agreed.

The final product of the ERT method is usually a 2D pseudosection, an inversion result or a 3D voxel model of the target.