Estimation of the short-term zonal tides from UT1 observations

Details Estimation of the short-term zonal tides from UT1 observations Estimation of the short-term zonal tides from UT1 observations

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jsrs.meet..208c&link_type=abstract

"Proceedings of the "Journées Systèmes de Référence Spatio-temporels 2007". Observatoire de Paris, 17-19 September 2007. Editor:

Physics

Scientific paper

Zonal tides with periods shorter than 35d, according to the latest IERS model, are estimated by means of UT1-TAI series from the solution C04 of the IERS. Corrections of AAM and OAM influences on UT1 variations are applied. The accuracy of the estimated amplitudes of the fortnightly and monthly zonal tides is about 4µs. After removing the estimated zonal tides from UT1-TAI variations, the residual time series contain significant oscillations with periods below 35d. New 56 terms are involved and proposed here 97-term model of fortnightly and monthly zonal tides yields estimation of tidal amplitudes with accuracy of about 2.1µs and residuals below 13µs.

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