1. Analysis of periodicity in the irregular rotation of the earth
- Author
-
Luo Shi-fang, Yan Shao-zhong, Li Yuan-xi, Liang Shi-guang, and Ye Shu-hua
- Subjects
Sunspot ,Meteorology ,Space and Planetary Science ,Planet ,Future trend ,Periodogram ,Astronomy and Astrophysics ,Astrophysics::Earth and Planetary Astrophysics ,Variation (astronomy) ,Rotation ,Geodesy ,Geology ,Earth's rotation - Abstract
In this paper a periodogram analysis is applied to the 1820–1970 data of Earth's rotation in a search for hidden periods ranging from a few years to several decades. 12 periods are found and their combination matches well the observed variation over these 150 years. Most of the periods are very close to the periods of the sunspots, the Moon and the planets. The extrapolated curve remains in good fit with data observed in 1972. The results may be useful in further investigations on the underlying mechanisms and in forecasting future trend in the variation of the Earth's rotation.
- Published
- 1977
- Full Text
- View/download PDF