Hostname: page-component-745bb68f8f-b6zl4 Total loading time: 0 Render date: 2025-02-01T07:44:25.549Z Has data issue: false hasContentIssue false
  • English
  • Français

Short-Period Oscillations of Earth Rotation

Published online by Cambridge University Press:  12 April 2016

B. Kołaczek ,
W. Kosek  and
H. Schuh
B. Kołaczek
Affiliation:
Space Research Centre, PAS Warsaw, Poland
W. Kosek
Affiliation:
Space Research Centre, PAS Warsaw, Poland
H. Schuh
Affiliation:
Deutsches Geodätisches Forschungsinstitut, DGFI München, Germany

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.

Sub-seasonal variations and especially sub-seasonal oscillations with periods of about 120, 60, 50, 40 days in polar motion and of about 120, 60–90, and 50 days in LOD are presented. Variations of amplitudes of these sub-seasonal oscillations of polar motion are shown. Maxima of these amplitudes are of the order of 2–4 mas. These oscillations are elliptical ones. The correlation coefficients between geodetic and atmospheric excitation functions in this range of the spectrum are variable and have annual variations. Maxima of correlation coefficients are of the order of 0.6–0.8.

Modern geodetic VLBI experiments provide very accurate results in polar motion and UT1–UTC with a temporal resolution of 3–7 minutes. Several irregular, quasi-periodic variations were found. In many UT1–UTC data sets, oscillations with periods around 8 hours and between 5 and 7 hours can be seen.

Type
Part 6. Daily and Subdaily Polar Motion
Information
International Astronomical Union Colloquium , Volume 178: Polar Motion: Historical and Scientific Problems , 2000 , pp. 533 - 544
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

Brzeziński, A., 1992. Polar motion excitation by variations of the Effective Atmospheric Angular Momentum functions. Considerations Concerning Deconvolution Problem, MN, 17, 3–20.Google Scholar
Brzeziński, A., 1995. “On the Interpretation of Maxium Entropy Power Spectrum and Cross Power Spectrum in Earth Rotation Investigations.” Manuscripta Geodetica, 20, 248–264.Google Scholar
Chao, B.F., 1989. “Length of day variations caused by El Niño Southern oscillation and quasi-biennial oscillation.” Science, 243, 923–925.Google Scholar
Chao, B.F., 1993. “Excitation of Earth’s polar motion by Atmospheric Angular Momentum variations, 1980-1990.” Geophysical Research Letters, 20, 235–256.Google Scholar
Dickey, J.O., 1989. Axial Rate of Spin of the Earth, in the Interdisciplinary Role of Space Geodesy (Mueller, and Zerbini, eds.) Erice, Italy, July 23-29, 1988, 23–30.Google Scholar
Dickey, J.O., 1993. Atmospheric excitation of the Earth’s rotation: Progress and prospects via space geodesy, AGU Monograph, Contributions of space geodesy to geodynamics: Earth Dynamics, Smith, and Turcotte, eds., Geodynamics Series, 24, 55–70.Google Scholar
Dickey, J.O., Ghil, M., Marcus, L., 1991. “Extratropical aspects of the 40-50 day oscillation in Length of Day and Atmospheric Angular Momentum.” JGR, 96, 22, 643–658.Google Scholar
Dickey, J.O., Marcus, S.L., Eubanks, T.M., and Hide, R., 1993. Climate Studies via Space Geodesy: Relationships between ENSO and and Interannual Length of Day Variations. In Interactions Between Global Climate Subsystems: The Legacy of Hann, Geophys. Monograph, Ser., 75, edited by McBean, G.A. and Hantel, M., AGU, Washington, D.C. 141–155.Google Scholar
Eubanks, T.M., Steppe, J.A., Dickey, J.O., Collehan, P.S., 1985. “A spectral analysis of the Earth’s Angular Momentum budget.” JGR, 90, 5385–5404.CrossRefGoogle Scholar
Eubanks, T.M., Steppe, J.A., Dickey, J.O., Rosen, R.D., Salstein, D.A., 1988. “Causes of rapid motion of the Earth Pole.” Nature, 334, No. 6178, 115–119.Google Scholar
Eubanks, T.M., 1993. “Variations in the orientation of the Earth,” AGU Monograph, Contributions of Space Geodesy to Geodynamics: Earth Dynamics, Smith, and Turcotte, eds. Geodynamics Series, 24, 1–54.Google Scholar
Feissel, M., Gambis, D., 1980. “La mise en evidence de variations rapides de la durée du jour.” C.R. Acad. Sc, Paris, 291, 271–273.Google Scholar
Freedman, A.P., Steppe, J.A., Dickey, J.O., Eubanks, T.M. and Sung, L.Y., 1994. “The short-term prediction of universal time and length of day using Atmospheric Angular Momentum.” JGR, 99, 6981–6996.Google Scholar
Gambis, D., 1992. “Wavelet transform analysis of the length of the day and El Niño/Southern oscillation variations at interseasonal and interannual time scale.” Ann. Geophysicae, 10, 429–437.Google Scholar
Hide, L., Birch, L., Morrison, V., Shea, D.J., White, , 1980. “Atmospheric Angular Momentum and changes in the length of the day,” Nature, 286, 114–117.Google Scholar
Hide, I., Dickey, J.O., 1991. “Earth variable rotation.” Science, 253, 629–637.Google Scholar
IERS 1988-1998. IERS Annual Report for 1988-1998, Observatoire de Paris, France,Google Scholar
IERS Conventions (1996), 1996. ed. by McCarthy, D. D., IERS Technical Note 21, Observatoire de Paris, France.Google Scholar
Kołaczek, B., Kosek, W., 1987. Systematic differences between radiointerferometric and laser series of pole coordinates and short-periodic variations of pole coordinates. Paper presented at the IUGG Symposium V4 “Variations in Earth rotation,” Vancouver, Canada. Geophys. Monograph, 82, IUGG, copyright 1994 by the IUGG and AGU, 95–101.Google Scholar
Kołaczek, B., 1992. Variations of Short Periodical Oscillations of Polar Motion with Periods ranging from 10-140 days. Report No. 419 Department of Geodetic Science and Surveying. The Ohio State University, Columbus, Ohio 43210–1247, Apr. 1992.Google Scholar
Kołaczek, B., 1993. Variations of Short Periodical Oscillations of Earth Rotation. Proc. of the 156th Symp. of the LAU held in Shanghai, China, Sep. 15–19, 1992.Google Scholar
Developments in Astrometry and Their Impact on Astrophysics and Geodynamics. Mueller, I.I. and Kołaczek, B. (eds). Kluwer Academic Publishers. Dordrecht/Boston/New York, 291–296.Google Scholar
Kołaczek, B., Kosek, W., 1993. Variations of 80-120 days Oscillations of polar motion and Atmospheric Angular Momentum. Proc. 7th International Symposium “Geodesy and Physics of the Earth” IAG Symposium No. 112, Potsdam, Germany, Oct. 5-10, 1992. Montag, H. and Reigber, Ch. (eds.), Springer Verlag, 439–442.Google Scholar
Kołaczek, B., 1995. Short Period Variations of Earth Rotation. Proc. Journées 1995 “Systèmes de Référence Spatio-Temporels”, Warsaw, Poland, Sep. 18–20, 1995. 147–154. Google Scholar
Kołaczek, B., Nuzdhina, M., Nastula, J., Kosek, W. 1999. “El Niño impact on atmospheric and geodetic excitation functions” — accepted by Journal Geophysical Research.Google Scholar
Kołaczek, B., Nuzhdina, M., Nastula, J., Kosek, W. 1999. “El Niño Impact on Polar Motion,” IERS Technical Notes No 26, “The impact of El Niño and other low frequency signals on Earth Rotation and global Earth System parameters” Paris, France. 23–28.Google Scholar
Kosek, W., 1987. “Computations of Short Periodical Variations of Pole Coordinates of the MERIT Campaign by the Use of Ormsby Filter and the Maximum Entropy Spectral Analysis with the Optimum Filter Length, Bulletin Géodésique, 61, 109–124.Google Scholar
Kosek, W., 1993. “The Common Short Periodic Oscillations in the Earth’s Rate of Rotation, Atmospheric Angular Momentum and Solar Activity,” Bulletin Géodésique, 67, 1–9.Google Scholar
Kosek, W. 1995. “Time Variable Band Pass Filter Spectra of Real and Complex-Valued Polar Motion Series,” Artificial Satellites, Planetary Geodesy, 30, 27–43.Google Scholar
Kosek, W., Kołaczek, B., 1995a. “Irregular Short Period Variations of Polar Motion.” Proc. Journées 1995 ”Systèmes de Référence Spatio-Temporels”, Warsaw, Poland, Sep. 18–20, 1995. 117–120.Google Scholar
Kosek, W., Nastula, J., Kołaczek, B., 1995b. “Variability of polar motion oscillations with periods from 20 to 150 days in 1979-1991.” Bulletin Geodesique, 69, 308–319.Google Scholar
Kosek, W., Kołaczek, B., 1997. “Semi-Chandler and Semiannual Oscillations of Polar Motion.” Geophysical Research Letters, 24, 2235–2238.Google Scholar
Kosek, W., McCarthy, D.D., Luzum, B. 1998a. “Possible Improvement of Earth Orientation Forecast Using Autocovariance Prediction Procedures, Journal of Geodesy, 72, 189–199.Google Scholar
Kosek, W., Kołaczek, B., Salstein, D., Nastula, J., 1998b. “Time variable Spectra of Polar Motion and its Atmospheric Excitation.” Paper presented at the AGU Fall Meeting, Symposium G71I, “Polar Motion from Hours to Decades,” San Francisco, December 6-10, 1998.Google Scholar
Kosek, W., Popiński, W., 1999a. “Comparison between the Fourier transform band pass filter and the wavelet transform spectro-temporal analyses on the Earth Rotation Parameters and their excitation functions.” Submitted to IERS Technical Notes 28, paper presented at the EGS XXIV General Assembly The Hague, The Netherlands, 19-23 April 1999.Google Scholar
Kosek, W., Popiński, W., 1999b. “Comparison of the spectro-temporal analysis methods on polar motion and its atmospheric excitation.” Accepted to Artificial Satellites, Space Research Centre, PAS, Warsaw, Poland.Google Scholar
Kuehne, J., Stuart, J., Wilson, C.R., 1993. “Atmospheric excitation of non-seasonal polar motion, JGR, 98, 19973–19978.Google Scholar
Morabito, D.D., Eubanks, T.M., Steppe, J.A., 1988. Kalman filtering of Earth rotation changes in the 128th IAU Symposium on The Earth’s rotation and reference frames for geodesy and geodynamics. Kluwer Academic, 257–267.Google Scholar
Nastula, J. 1992. “Short periodic variations in the Earth’s rotation in the period 1984-1990,” Ann. Geophysicae, 10, 441–448.Google Scholar
Nastula, J., 1995. “Analysis of the Regional Contributions to the Polar Motion Excitation.” Proc. Journées 1995 ”Systèmes de Référence Spatio-Temporels”, Warsaw, Poland, Sep. 18–20, 1995. 155–158.Google Scholar
Nastula, J., Kosek, W., Kołaczek, B., 1997. “Analyses of Zonal Atmospheric Excitation Functions and Their Correlation with Polar Motion Excitation Functions.” Annales Geophysicae, 15, EGS 1439–1446.Google Scholar
Nothnagel, A., Nicolson, G.D., Campbell, J. and Schuh, H., 1992. “Radioint-erferometric polar motion observations with high temporal resolution,” Bulletin Géodésique, 66, 346–354.Google Scholar
Otnes, R.K., Enochson, L. 1972. Digital Time Series Analysis, John Wiley and Sons Publishing Company, New York.Google Scholar
Petrov, S., Brzeziński, A., Gubanov, V.S., 1996. “A stochastic model for polar motion with Application to smoothing, prediction and combining.” Artificial Satellites, 31, 1 (Planetary Geodesy No 26), Space Research Centre, PAS, Warsaw, Poland, 51–70.Google Scholar
Popiński, W., Kosek, W. 1994. “Wavelet Transform and Its Application for Short Period Earth Rotation Analysis,” Artificial Satellites, 29, 75–83.Google Scholar
Popiński, W., Kosek, W. 1995a. “Discrete Fourier and Wavelet Transforms in Analysis of Earth Rotation Parameters,” in Proc. Journées 1995 — Earth Rotation, Reference Systems in Geodynamics and Solar System, 18-20 September, Warsaw, Poland, 121–124.Google Scholar
Popiński, W., Kosek, W. 1995b. “The Fourier Transform Band Pass Filter and its Application to Polar Motion Analysis,” Artificial Satellites, 30, 9-25, Space Research Centre, Warsaw, Poland.Google Scholar
Rosen, R.D. and Salstein, D.A., 1983. “Variations in Atmospheric Angular Momentum on global and regional scales and the length of day,” JGR, 88, 5451–5470.Google Scholar
Schmitz-Hübsch, H. and Schuh, H. 1999. “Seasonal and Short-Period Fluctuations of Earth Rotation Investigated by Wavelet Analysis.” Festschrift for Erik W. Grafarend, Univ. Stuttgart, Technical Reports Dep. of Geodesy and Geoinformatics, Report Nr. 1999.6-2, ed. by Krumm, F. and Schwarze, V.S., 421–431.Google Scholar
Schuh, H. 1986. “Analysis of UT1 Determinations by VLBI within Project IRIS.” IAU Symposium 128, The Earth’s Rotation and Reference Frame for Geodesy and Geodynamics, Coolfont, Oct. 20-24, 1986, ed. by Babcock, and Wilkins, D. Reidel, 171–180.Google Scholar
Schuh, H. 1990. “Earth’s Rotation Measured by VLBI.” Proc. of the 3rd Meeting on Tidal Friction and the Earth’s Rotation, Bielefeld, Sep., 1988, ed. by Brosche, P. and Sündermann, H., Springer Verlag, 1–12.Google Scholar
Schuh, H., 1999. “The Rotation of the Earth Observed by VLBI.” Acta Geod. Geoph. Hungarica, 34, 421–432.Google Scholar
Schuh, H. and Titov, O., 1999, “Short-period variations of the Earth’s Rotation Parameters as seen by VLBI.” Proc. of the 13th Working Meeting on European VLBI, Viechtach Feb. 1999, ed. by Schlüter, W. and Haase, H., BKG report, 172–177.Google Scholar
Titov, O. 1999. “Least squares collocation method (LSCM) for space geodetic data analysis.” Proc. of the IAG Symposium ‘Towards an Integrated Global Geodetic Observing System’ (IGGOS), Munich, Oct. 1998, in press, 1999.Google Scholar
Titov, O. and Zarraoa, N., 1997. “OCCAM 3.4 User’s Guide.” Communications of the Institute for Applied Astronomy (IAA), St. Petersburg, No. 69.Google Scholar