Intrayear irregularities of the Earth’s rotation

被引：0
|
作者：
L. D. Akulenko
Yu. G. Markov
V. V. Perepelkin
L. V. Rykhlova
机构：
[1] Russian Academy of Sciences,Institute of Mechanics
[2] Moscow Institute of Aviation,Institute of Astronomy
[3] Russian Academy of Sciences,undefined
来源：
Astronomy Reports | 2008年 / 52卷
关键词：
95.10.Jk;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The methods of celestial mechanics can be used to construct a mathematical model for the perturbed rotational motions of the deformable Earth that can adequately describe the astrometric measurements of the International Earth Rotation Service (IERS). This model describes the gravitational and tidal influences of the Sun and Moon. Fine resonant interactions of long-period zonal tides (annual, semiannual, monthly, and biweekly) with the diurnal and semidiurnal tides are revealed. These interactions can be reliably confirmed via a spectral analysis of the IERS data. Numerical modeling of tidal irregularities of the Earth’s axial rotation was carried out, focusing on the analysis and forecasting of variations of the day length occurring within short time intervals of a year or shorter (intrayear variations).
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页码：590 / 597
页数：7
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