The ITRF realizations developed from the ITRS since 1991 include the following versions:3
epoch
79038991
79048992
79058993
79068994
79078995
79088996
79098997
From this version onwards, the motion of the tectonic plate is represented in the solution for each station as a velocity vector. Previous ITRFs only continued the initial positions, using a motion model to fill in the velocity.
79108998
This version introduces extra parameters to describe the year-periodic motion of the stations: A (amplitude) and φ (phase) per-axis. This sort of seasonal variation has an amplitude of around 1 cm and is attributed to non-tidal loading effects (e.g. the shifting weight of water).
7911
8999
7912 9000
99899990
GNSS systems:9
National systems:
The GPS reference epoch was moved from 2000.0 to 2001.0 in G1150 due to the magnitude 7.9 Denali Fault earthquake in Alaska in November 2002. Still in 2022 ITRF2020 was released, yet GPS was only using G2139 in its antennas, which was aligned to ITRF2014 (IGb14) (though at epoch 2016.0, not reference epoch 2010.0).11 On 7 January 2024 move to IGS20 happened, so WGS 84 is now aligned with ITRF2020, including PSD (post-seismic deformation), also called G2296.
On the other hand GLONASS is using PZ-90.11, which is close to ITRF2008 at epoch 2011.0 and is using 2010.0 epoch (that means when you use reference transformation to PZ-90.11 you will get January 2010 date).
Clynch, James R. (February 2006). "Earth coordinates" (PDF). GPS Geodesy and Geophysics. James R. Clynch. Retrieved 24 March 2016. http://clynchg3c.com/Technote/geodesy/coorddef.pdf ↩
"Reference Frames in GNSS". Navipedia. European Space Agency. https://gssc.esa.int/navipedia/index.php/Reference_Frames_in_GNSS ↩
"International Terrestrial Reference Frame 2014 (ITRF2014)". Quality Positioning Services B.V. Retrieved 3 October 2019.[permanent dead link] https://confluence.qps.nl/qinsy/latest/en/international-terrestrial-reference-frame-2014-itrf2014-138708701.html ↩
Altamimi, Zuheir; Sillard, Patrick; Boucher, Claude (2002). "ITRF2000: A new release of the International Terrestrial Reference Frame for earth science applications". Journal of Geophysical Research: Solid Earth. 107 (B10): ETG 2-1–ETG 2-19. Bibcode:2002JGRB..107.2214A. doi:10.1029/2001JB000561. https://doi.org/10.1029%2F2001JB000561 ↩
Altamimi, Z.; Collilieux, X.; Legrand, J.; Garayt, B.; Boucher, C. (2007). "ITRF2005: A new release of the International Terrestrial Reference Frame based on time series of station positions and Earth Orientation Parameters". Journal of Geophysical Research: Solid Earth. 112 (B9): B09401. Bibcode:2007JGRB..112.9401A. doi:10.1029/2007JB004949. hdl:10338.dmlcz/141752. /wiki/Bibcode_(identifier) ↩
Altamimi, Zuheir; Collilieux, Xavier; Métivier, Laurent (3 February 2011). "ITRF2008: an improved solution of the international terrestrial reference frame". Journal of Geodesy. 85 (8): 457–473. Bibcode:2011JGeod..85..457A. doi:10.1007/s00190-011-0444-4. https://doi.org/10.1007%2Fs00190-011-0444-4 ↩
Altamimi, Zuheir; Rebischung, Paul; Métivier, Laurent; Collilieux, Xavier (2016). "ITRF2014: A new release of the International Terrestrial Reference Frame modeling nonlinear station motions". Journal of Geophysical Research: Solid Earth. 121 (8): 6109–6131. Bibcode:2016JGRB..121.6109A. doi:10.1002/2016JB013098. https://doi.org/10.1002%2F2016JB013098 ↩
"ITRF | Itrf2020". itrf.ign.fr. Retrieved 2022-06-18. https://itrf.ign.fr/en/solutions/ITRF2020 ↩
US Department of Commerce, National Oceanic and Atmospheric Administration. "Transitioning from IGS14 to IGb14 - National Geodetic Survey". geodesy.noaa.gov. Retrieved 28 June 2022. https://geodesy.noaa.gov/CORS/news/igb14/transitioning_to_igb14.shtml ↩