IGSN71 is the international gravity datum defined in 1971. Is there any updated modern international gravity datum that replace IGSN71?
Stallin Bhandari Tri Dev Acharya Can you please help me to find answer to this query?
I think this is the only one available, no updates so far.
https://celebrating200years.noaa.gov/foundations/gravity_surveys/side.html
https://www.esri.com/about/newsroom/arcuser/moving-from-static-spatial-reference-systems-in-2022/
Do not know about system or datum but frame is the next https://iag-aig.org/doc/GH2020/209_IAG%20Resolutions.pdf
Than this publication can help as I thing Article Status of the International Gravity Reference System and Frame
About European and world gravity reference https://www.researchgate.net/scientific-contributions/G-Boedecker-2026296205
Here is the presentation made on the "International Gravity Reference System":
Presentation The International Gravity Reference System
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