Webinar: The new International Gravity Reference System (IGRS) and its materialization (IGRF)


The increasing importance of terrestrial gravimetry requires a stable reference system that reflects the precision achieved by modern gravimeters. Over the past decade, the International Association for Geodesy (IAG) has developed a system for achieving accurate, homogeneous, long-term global monitoring of the Earth’s gravity field, while harnessing the potential of current absolute gravity measurements. The webinar will be focused on addressing the concepts around the International Gravity Reference System (IGRS) and its materialization, the IGRF, established from Resolutions N ° 2 (2015) and N ° 4 (2019) of the IAG. Subsequently, the regional impact of the establishment of the IGRS / IGRF will be analyzed through the Argentine-German Geodesy Observatory (AGGO) as the IGRF reference station.


Hartmut Wziontek

Federal Agency for Cartography and Geodesy (BKG), Germany
President of the IAG Joint Working Group 2.1.1: Establishment of an International Gravity Reference Frame

Ezequiel D. Antokoletz

Faculty of Astronomical and Geophysical Sciences of the National University of La Plata, Argentina
National Council for Scientific and Technical Research (CONICET), Argentina
Federal Agency for Cartography and Geodesy (BKG), Germany
Coordinator “Gravimetric Reference” within the GT-III of SIRGAS

Date: March 5, 2021
Time: 15:00 UTC
Duration: 45 minutes + 15 questions

Meeting link:
Meeting ID: 812 7834 6287
Access code: 197162

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