Statistics – Computation
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994em%26p...65..269z&link_type=abstract
Earth, Moon, and Planets (ISSN 0167-9295), vol. 65, no. 3, p. 269-276
Statistics
Computation
4
Dynamic Models, Earth Axis, Earth Core, Earth Mantle, Earth Rotation, Flux Density, Earth Orientation, Earth Planetary Structure, Earth Tides, Geodesy, Very Long Base Interferometry
Scientific paper
In this paper, two factors -- the redistribution of the density and the variation in the angular velocity of the Earth rotation, that affect the adopted value of the flattening for equidensity surface within the Earth, are discussed. The computational results show that the contribution of the redistribution of the density in the Earth interior (especially in the core) on the change of the flattening at the core-mantle boundary (CMB) is marginal, and that the calculated value of the flattening at the CMB can be in good agreement with the very long baseline interferometry (VLBI) observed value so long as the fact that the angular velocity of the Earth rotation has undergone the tidal evolution is taken into account. As a result, this paper presents a set of recommended values of the dynamical parameters of the Earth for computing Earth's forced nutation series.
Xia Yi-Fei
Zhang Cheng-Zhi
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