Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977azh....54..429p&link_type=abstract
Astronomicheskii Zhurnal, vol. 54, Mar.-Apr. 1977, p. 429-435. In Russian.
Astronomy and Astrophysics
Astronomy
Latitude, Nutation, Polar Wandering (Geology), Power Spectra, Diurnal Variations, Entropy, High Resolution, Sidereal Time
Scientific paper
Maximum-entropy power spectra are computed for the latitude differences determined with the aid of 18-yr observations of two bright zenith stars (Alpha Per and Eta UMa) at Poltava, USSR. Long-period oscillations in latitude differences with periods of 96, 183, 321, 366, and 399 sidereal days are observed and interpreted in terms of the combined effects of errors in nutation coefficients, plumb-line fluctuations, and forced motion of the poles. Corrections are determined for the coefficients of the dominant and semiannual nutation terms. The possible existence of near-diurnal free polar motion, as predicted by a theory involving a liquid core for the earth, is considered.
Iatskiv Ia. S.
Popov A. N.
No associations
LandOfFree
Interpretation of the Poltava latitude-difference spectrum obtained by observations of two bright zenith stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Interpretation of the Poltava latitude-difference spectrum obtained by observations of two bright zenith stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interpretation of the Poltava latitude-difference spectrum obtained by observations of two bright zenith stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1616999