The principal moments of inertia calculated with the hydrostatic equilibrium figure of the Earth
The principal moments of inertia calculated with the hydrostatic equilibrium figure of the Earth
复制标题
用地球静水平衡图计算的主惯性矩
DOI：
10.1016/j.geog.2017.02.005
复制
发表时间：
2017-05
影响因子：
2.4
通讯作者：
Zhang M.
中科院分区：
文献类型：
--
作者：
Liu C.J.;Huang C.L.;Zhang M.
As an indication of the Earth's mass distribution, the principal moments of inertia (PMOI, i.e.,A, B, C) of the Earth are the basic parameters in studies of the global dynamics of the earth, like earth nutation, and the geophysics. From the aspect of observation, the PMOI can be calculated from the spherical coefficients of observed gravity field. In this paper, the PMOI are calculated directly according to its definition with the figures of the Earth's interior derived by a generalized theory of the hydrostatic equilibrium figure of the Earth. We obtain that the angle between the principal axis of the maximum moment of PMOI and the rotational axis is 0.184°, which means that the other two principal axes are very closely in the equatorial plane. Meanwhile,B-Ais 1.60 × 10−5MR2, and the global dynamical flattening (H) is calculated to be 3.29587 × 10−3, which is 0.67% different from the latest observation derived valueHobs(3.273795 × 10−3) (Petit and Luzum, 2010), and this is a significant improvement from the 1.1% difference between the value ofHderived from traditional theories of the figure of the Earth and the value ofHobs.It shows that we can calculate the PMOI andHwith an appropriate accuracy by a generalized theory of the hydrostatic equilibrium figure of the Earth.
登录
查看更多内容
影响因子：
4.4
作者：
Chen W.;Li J.C.;Ray J.;Shen W.B.;Huang CL.
通讯作者：
Huang CL.
影响因子：
1.6
作者：
V. Dehant;N. Capitaine
通讯作者：
V. Dehant;N. Capitaine
影响因子：
2.8
作者：
Han-shou Liu;B. Chao
通讯作者：
Han-shou Liu;B. Chao
DOI：
--
发表时间：
--
期刊：
Bulletin of the Astronomical Institutes of the Netherlands
影响因子：
--
作者：
W. Sitter;Faculteit der Wiskunde en Natuurwetenschappen
通讯作者：
W. Sitter;Faculteit der Wiskunde en Natuurwetenschappen
DOI：
--
发表时间：
2008
期刊：
Progress in Astronomy
影响因子：
--
作者：
Liu Yu;Huang Cheng-li
通讯作者：
Liu Yu;Huang Cheng-li