Since the early 1990s, GFZ has been operating superconducting gravimeters for high-precision, long-term stable and continuous monitoring of temporal gravity changes. These are the integral effects of all mass variations and deformations induced by a large number of geophysical effects on a wide spectrum from seconds to decades.

GFZ currently operates 3 superconducting gravimeters at the observatories in

• Sutherland/South Africa | SAGOS
• Zugspitze/Germany | ZUGOG
• Helgoland/Germany | HELGOG
  
  They are part of the International Geodynamics and Earth Tide Service (IGETS) with the IGETS database operated at GFZ.