Analysis of multifrequency effects in oscillations of the Earth's pole

Details Analysis of multifrequency effects in oscillations of the Earth's pole Analysis of multifrequency effects in oscillations of the Earth's pole

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007arep...51..421a&link_type=abstract

Astronomy Reports, Volume 51, Issue 5, pp.421-427

Astronomy and Astrophysics

Astronomy

95.10.Jk

Scientific paper

A least-squares analysis of measurements of the Earth-rotation parameters is used to interpolate these data in order to redict the polar motion using a basic mathematical model that includes two frequencies: the Chandler and annual frequencies. A model taking into account the oscillations induced by the influence of the Moon is considered. The manifestation of high-frequency lunar oscillations in the beat period is demonstrated, together with the feasibility of interpolating these oscillations over short time intervals. A comparative analysis of models taking into account the monthly and bi-weekly frequencies is presented. A reasonable model explaining anomalous phenomena in the six-year beating is proposed.

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