ELECTRICAL RESISTIVITY TOMOGRAPHY ERT

ERT electrical resistivity tomography is non-invasive surface method used to map subsurface resistivity and define geological features. ERT data are collected with automated multi-electrode resistivity meters. The chief advantage of ERT method is great accuracy of measurements as well as high immunity to electrical interferences. Depending on applied electrode array ERT survey allows to choose 1D, 2D or 3D imaging. Interpretation of ERT data provides information on the mineral deposit and its depth, presence of aquifers or on the source and extent of groundwater and soil pollution.

APPLICATIONS

  • assessing geological conditions

  • locating karst, faults and fracture zones

  • groundwater exploration

  • minerals exploration

  • flood embankments and dams investigations

  • landslide investigation

  • detection soil and groundwater pollution

  • detecting buried objects, support to archaeology

Geoelectrical resistivity methods are one of the most popular survey techniques of applied geophysics. Interpretation of data allows for separation of zones with different resistivity values; subsurface resistivity distribution reflects soil thickness and geologic variability as well as natural and anthropogenic features in the shallow subsurface.

EQUIPMENT

Terrameters LS2 ABEM (ERT, IP)

ARES II, GF Instruments (ERTR/LS)