Hana Krásná, Johannes Böhm, Harald Schuh
Abstract
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Aims. The signature of free core nutation (FCN) is found in the motion of the celestial intermediate pole in the celestial reference frame and in the resonance behaviour of the frequency-dependent Earth tidal displacement in its diurnal band. We focus on estimation of the FCN parameters, i.e. the period and amplitude.
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Aims. The signature of free core nutation (FCN) is found in the motion of the celestial intermediate pole in the celestial reference frame and in the resonance behaviour of the frequency-dependent Earth tidal displacement in its diurnal band. We focus on estimation of the FCN parameters, i.e. the period and amplitude.
Key concepts: Sidereal time, Nutation, Very-long-baseline interferometry, Geodesy, Amplitude, Ephemeris, Physics, Displacement (psychology)