The Earth's equatorial principal axes and moments of inertia
The Earth's equatorial principal axes and moments of inertia
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DOI：
10.1111/j.1365-246x.1991.tb06341.x
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发表时间：
1991-09
影响因子：
2.8
通讯作者：
Han-shou Liu;B. Chao
中科院分区：
文献类型：
--
作者：
Han-shou Liu;B. Chao
The earth's equatorial principal moments of inertia are given as A and B, where A is less than B, and the corresponding principal axes are given as a and b. Explicit formulas are derived for determining the orientation of a and b axes and the difference B - A using C(22) and S(22), the two gravitational harmonic coefficients of degree 2 and order 2. For the earth, the a axis lies along the (14.93 deg W, 165.07 deg E) diameter, and the b axis lies perpendicular to it along the (75.07 deg E, 104.93 deg W) diameter. The difference B - A is 7.260 x 10 to the -6th MR2. These quantities for other planets are contrasted, and geophysical implications are discussed.
