Comparison of irregular changes of speed of rotation of the Earth, parameters of geophysical and atmospheric processes with events on the Sun

  • G.S. Kurbasova Crimean Astrophysical Observatory, Nauchny, 298409
  • G.N. Shlikar Crimean Astrophysical Observatory, Nauchny, 298409

Abstract

The study of the Earth’s rotation in space addresses the complex nature of Earth orientation changes, the mechanismus of excitation of these changes and their geophysical implications in a droad variety of areas.

The rotation rate of the Earth’s crust is not constant, but exhibits complicated fluctuations in speed amounting to several parts in 108 (corresponding to a variation of several milliseconds (ms) in the lingth of the day (LOD)). These changes occur over a broad spectrum of the time scales, ranging from hours to centuries and longer, reflecting the fact they are produced by a wide variety of geophysical and astronomical processes.

The spectral structure of experimental time series is determined with the help modified per by a method two-channel autoregressions spectral power density. Results of comparison of time series give the basis to speak about high coordination of fluctuations with the periods about 73 year.

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References

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Published
2009-06-01
How to Cite
Kurbasova G., Shlikar G., 2009. Izvestiya Krymskoi Astrofizicheskoi Observatorii, vol. 105, no. 1, pp. 195-201. Available at: https://jn.craocrimea.ru/index.php/izvcrao/article/view/892 (Accessed: 3December2020)
Section
Research articles