Electrical resistivity tomography services
Why do we need electrical resistivity tomography services (ERT) ?
Electrical Resistivity Tomography (ERT) is an advanced geophysics method to determine the sub-surface’s resistivity distribution by making measurements on the ground surface.
ERT profiles consist of a modeled cross-sectional (2-D) plot of resistivity (Ω·m) versus depth
- Firstly, Sinkhole/void locating
- Secondly, mapping of depth to bedrock
- Thirdly, groundwater table investigation
- Fourthly, mapping of bedrock fracture zones
- Mapping extents of conductive contaminant plumes
- Landfill delineation
- In addition archaeological site mapping
Methodology and data processing
ERT is a geophysical technique for imaging subsurface structures from electrical resistivity measurements made at the surface 2-D electrical resistivity tomography (ERT) is now mainly carried out with a multi-electrode resistivity meter system. Such surveys use many electrodes laid out in a straight line with constant spacing. after that A computer-controlled system is used to automatically select the active electrodes for each measure. A computer-controlled system is then used to automatically select the active electrodes for each measure.
As a result, the investigation area has resistivity values ranging from a few tens of Ω·m to a few hundred thousand Ω·m, from the measurement results we have the following observations:
– The zone of low resistivity with the ability to the moist sand-soil layer, water-bearing fractured rock.
– The zone with high resistivity with the ability to the dry sand-soil layer, hard rock, or less weathered rock.
Electrical resistivity tomography ERT is a useful near-surface imaging technique, which mainly include data acquisition, numerical modeling and tomographic inversion. As a result, for surface data acquisition, dipole-dipole, Schlumberger and gradient arrays are applicable for high-resolution images, particularly, the full-range gradient array may complement to the gradient array for better data coverage and completeness of data information. 
My Son Application Science Research Company is a leader in electrical resistivity tomography ERT services in VietNam And Southeast Asia.
Hotline: 0902 307 382 (by English)
Technical support phone: 0963 247 151 (by English)
Email: mysoncrsa@gmail.com
In conclusion, Non Destructive, Precise and Cost Efficient.