DECADE FLUCTUATIONS IN THE EARTHS RATE OF ROTATION AND LONG-TERM LIBRATIONS IN POLAR MOTION

被引：5
|
作者：
POMA, A
PROVERBIO, E
URAS, S
机构：
[1] Osservatorio Astronomico, Cagliari
[2] Istituto di Astronomia e Fisica Superiore dell'Università, Cagliari
[3] Unità di Ricerca, Gruppo Nazionale di Astronomia del CNR, Cagliari
来源：
NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA C-GEOPHYSICS AND SPACE PHYSICS | 1991年 / 14卷 / 02期
关键词：
polar wobble; Rotational variations;
D O I：
10.1007/BF02509391
中图分类号：
学科分类号：
摘要：
An investigation into long series of astronomical latitude and time observations is presented in order to analyse their long-term variations. Decade fluctuations in the Earth's rate of rotation and long-term librations in polar motion (secular drift and Markowitz wobble) are discussed. Available data show a good correlation between observed rotational acceleration of the Earth and the motion of the mean pole over periods of about thirty years.
引用
收藏
页码：119 / 125
页数：7
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