Specification
 

• GEOTOM apparatus for up to 100 electrodes with an extension box up to 200 electrodes
• 1-D-,2-D-, 3-D-ERT, complex electrical resistivity / self potential; 6 frequencies (0.3/1.04/2.08/4.16/8.32/25 Hz); 2 chanels; resolution: up to 10 nV
• Cable with electrode spacing of 2m and extension cables
• 200 stainless steal electrodes

Application
 

• General:  
  • Mapping and monitoring of the electrical conductivity of the underground: We can derive hydrological parameter (e.g. the spatial distribution of the ground water table) by interpreting the measured resistivity values.
  • Monitoring the temporal change in soil water content, e.g. a permanent resistivity profile was installed in the study area Wettzell (Bavarian Forest - BKG)

• Projects:  
  • HYGRA
  • OPAQUE

• Study area:  
  • South African Geodynamic Observatory (SAGOS)
  • Geodetic Observatory Wettzell, Germany

Link:

•  University of Potsdam Institute Applied Geophysics
•  GEOTOM is produced by GEOLOG