Decade fluctuations in the earth's rate of rotation and long-term librations in polar motion

Details Decade fluctuations in the earth's rate of rotation and long-term librations in polar motion Decade fluctuations in the earth's rate of rotation and long-term librations in polar motion

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ncimc..14..119p&link_type=abstract

Nuovo Cimento C, Serie 1 (ISSN 0390-5551), vol. 14 C, Mar.-Apr. 1991, p. 119-125.

Astronomy and Astrophysics

Astronomy

3

Earth Rotation, Librational Motion, Polar Wandering (Geology), Angular Velocity, Latitude

Scientific paper

An investigation into long series of astronomical lattude and time observations is presented in order to analyze their long-term variations. Decade fluctuations in the earth's rate of rotation and long-term librations in polar motion (secular drift and Markowitz wobble) are discussed. Available data show a good correlation between observed rotational acceleration of the earth and the motion of the mean pole over periods of about thirty years.

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