THE EARTHS EQUATORIAL PRINCIPAL AXES AND MOMENTS OF INERTIA

被引：32

作者：

LIU, HS

CHAO, BF

机构：

[1] Geodynamics Branch, Goddard Space Flight Center, Greenbelt, Maryland

来源：

GEOPHYSICAL JOURNAL INTERNATIONAL | 1991年 / 106卷 / 03期

关键词：

EARTHS MOMENT OF INERTIA; EARTHS ROTATION;

D O I：

10.1111/j.1365-246X.1991.tb06341.x

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Let the Earth's equatorial principal moments of inertia be A and B, where A < B, and the corresponding principal axes be a and b. Explicit formulae are here derived for determining the orientation of a and b axes and the difference B - A using C22 and S22, the two gravitational harmonic coefficients of degree 2 and order 2. For the Earth, the a axis lies along the (14.93-degrees-W, 165.07-degrees-E) diameter, and the b axis lies perpendicular to it along the (75.07-degrees-E, 104.93-degrees-W) diameter. The difference B - A is 7.260 x 10(-6) MR2. These quantities for other planets are contrasted, and geophysical implications are discussed.

引用

页码：699 / 702

页数：4

共 32 条

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