Is responsible for all ground geophysical data (gravity, magnetic, electromagnetic, seismic and resistivity). Localised areas are located and surveyed with the most effective method determined by the objective of the project, each technique can yield new insights into the subsurface. Planning, collection of data, processing and interpretation serves as pillars in ground geophysics.

It is also responsible for all ground geophysical surveys conducted by government to improve the current geo information database.


More than 13.000 gravity stations are currently held by the Geological Survey. To improve data density a gravity programme will be launched in the near future aiming at coverage of one gravity station per 10 km2. The network stations will be linked to a base station that is in turn connected to four absolute gravity stations established by NIMA in 1997. With the purchasing of new gravity-meter (CG-5), this national project will improve regional gravity coverage.

Other joint research ventures include monitoring magnetic secular variation in co-operation with the Hermanus Observatory, South Africa and neutron emissions in conjunction with the University of Potchefstroom, South Africa.