Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-11-25T04:57:44.112Z Has data issue: false hasContentIssue false
  • English
  • Français

Variations of Short Periodical Oscillations of Earth Rotation

Published online by Cambridge University Press:  07 August 2017

B. Kołaczek
B. Kołaczek*
Affiliation:
Space Research Center, PAS Bartycka 18A, 00-716 Warsaw, Poland

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The short periodical oscillations of variations of Earth rotation parameters (ERP) with periods of about 120, 100, 80, 60, 50 days are the most energetic oscillations after the Chandler and seasonal ones. These oscillations were analysed using SLR and VLBI data and the narrow Ormsby band-pass and Fourier Transformation filters. Polhodes of these oscillations for the last several years were computed. Amplitudes of these oscillations are of the order of 2–5 mas and are changeable. They are modulated with a period of about 600 days.

Type
Impact on Geodynamics
Information
Symposium - International Astronomical Union , Volume 156: Developments in Astrometry and their Impacts on Astrophysics , 1993 , pp. 291 - 296
Copyright
Copyright © Kluwer 

References

Dickey, J.O., 1989a, “Axial Rate of Spin of the Earth”, Proc. of the Int. Conference on The Interdisciplinary Role of Space Geodesy, Erice, Italy, Mueller, 1.1. Zebrini, eds., Springer Verlag, New York.Google Scholar
Dickey, J.O., Herring, T.A., O'Connel, R.J., Smylie, D.E., 1989b, “Short-Term Dynamics of the Solid Earth”, Proc. of Int. Conference on the Interdisciplinary Role of Space Geodesy, Erice, Italy, Mueller, I.I., Zerbini, eds., Springer Verlag, New York.Google Scholar
Dickey, J.O., 1991, Final Report of Special Study Group 5–98 Atmospheric Excitation of the Earth Rotation, XX IUGG General Assembly, Vienna, 1991.Google Scholar
Dickman, S.R., 1989, “Polar Motion”, Proc. of Int. Conference on the Interdisciplinary Role of Space Geodesy, Erice, Italy, Mueller, I.I., Zerbini, eds., Springer Verlag, New York.Google Scholar
Feissel, M. and Lewandowski, W.,1984, “A comparative Analysis of Vondrak and Gaussian Smoothing Techniques”, Bull. Geod. 58, 464–474.CrossRefGoogle Scholar
IERS, 1989–1991 IERS Annual Reports 1980 and 1991, Paris Observatory, Paris, France.Google Scholar
Kołaczek, B., Brzeziński, A., Kosek, W., Nastula, J., Hozakowski, W., Sołoducha, B., 1991 Investigations of Earth Rotation Variations, Artificial Satellites, Planetary Geodesy — No 15, Warsaw, Poland.Google Scholar
Kołaczek, B., 1992, “Variations of Short Periodical Oscillations of Earth Rotation with periods of ranging from 10–140 days”, Report No.419 Dept. of Geodetic and Surveying, OSU, Columbus, Ohio USA Google Scholar
Kosek, W., 1991. On high Frequency Spectral Analysis of Very Noisy Stochastic Processes and its Application to the ERP series determine by VLBI and SLR, U.S. Naval Observatory Circular No.177, Washington DC 20392-5100, Feb 15.Google Scholar
Orsmby, J.F.A., 1961, Design of Numerical Filters with Application to Missile Data Processing, J. Assoc. Comput. Mach. 8, 440–466.Google Scholar
Otnes, and Enochson, L. 1972, Spectral Analyses and Time Series, Academic Press. London.Google Scholar