Ground conductivity meter
Ground conductivity meter (GCM) is an EM method where coils transmit an electromagnetic field and the response of the ground is measured. GCM is also known as the slingram method. Bargheer Geophysics are capable of delivering several different GCM methods.
A much used method in Denmark is pulling the GCM instrument with an ATV, allowing a lot of data to be collected in a short time. In good field conditions, it is possible to collect in access of 50km of data in a day, making it a very cost effective tool for mapping the electric variations in the top 5-8 meters of the subsoil.
Applications for this method include:
- Archaelogical mapping.
- Geotechnical investigations (a great supplement to the traditional drillings).
- Mapping of the size of old landfills.
- Finding best sites for rainwater drainage.
- Drainage piping planning for agriculture.
- And many other uses.