IAGBN – International Absolute Gravity Basestation Network

The IAGBN is a global network of absolute gravity measurement sites coordinated by the IAG to monitor temporal and spatial variations of Earth’s gravity field. It maintains high-precision gravity reference points using absolute gravimeters and links regional and national gravity networks to a consistent global standard. In geodesy, the IAGBN supports geoid determination, mass redistribution studies, crustal deformation monitoring, and the calibration of other gravity measurement systems.