Hostname: page-component-848d4c4894-v5vhk Total loading time: 0 Render date: 2024-06-23T11:46:10.856Z Has data issue: false hasContentIssue false
  • English
  • Français

Polar Motion with Daily and Sub-daily Time Resolution

Published online by Cambridge University Press:  12 April 2016

G. Beutler ,
M. Rothacher ,
J. Kouba  and
R. Weber
G. Beutler
Affiliation:
Astronomical Institute, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland
M. Rothacher
Affiliation:
Astronomical Institute, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland
J. Kouba
Affiliation:
Geodetic Survey of Canada, 615 Booth Street, Ottawa, Ontario K1A 0E9, Canada
R. Weber
Affiliation:
Department of Theoretical Geodesy, Technical University of Vienna, Gusshausstrasse 27-29, Vienna, A-1040, Austria

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.

Since 1992 the IGS ACs (International GPS Service Analysis Centers) have delivered daily estimates of polar motion (PM) and length of day (LOD) to the IERS (International Earth Rotation Service). The IGS combined PM and LOD series are available since January 1, 1995. Since June 1996 the IGS rapid and the final combined orbits are accompanied with two distinct IGS combined PM series with the same time resolution of one day. Both, the IGS final and rapid combined PM series also include combined PM rate data as well as LOD, starting in March 1997.

Since 1995 the CODE Analysis Center of the IGS has produced PM and LOD estimates with a two-hour time resolution on a routine basis. A study of the time series with sub-daily time resolution clearly shows the half-daily and daily tidal signals. The results correspond very well to those obtained from satellite altimetry.

These sub-daily time series are based on the same observational data from the IGS tracking network as those time series with a one-day time resolution. It would thus be possible with a minor analysis effort, without additional observational effort, to come up with a long and consistent series of PM and LOD with a time resolution of about 1 to 2 hours.

Type
Part 6. Daily and Subdaily Polar Motion
Information
International Astronomical Union Colloquium , Volume 178: Polar Motion: Historical and Scientific Problems , 2000 , pp. 513 - 526
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

Beutler, G., Brockmann, E. Gurtner, W., Hugentobler, U., Mervart, L., Rothacher, M., 1994, Manuscripta Geodaetica, 19, pp. 367–386.Google Scholar
Beutler, G., Kouba, J., Springer, T., 1995, Bulletin Géodésique, 64, 4, pp. 200–222.Google Scholar
Beutler, G., Mueller, I.I., Neilan, R.E., 1996, International Association of Geodesy Symposia, 115, pp. 3–13, Springer.Google Scholar
Beutler, G., Rothacher, M., Schaer, S., Springer, T.A., Kouba, J., Neilan, R.E. 1999, Advances for Space Research, 23, 4, pp. 631–653.CrossRefGoogle Scholar
Clark, T.A., Ray, D.R. Gipson, J.M., Egbert, G.D., Ma, C., 1997, CSTG Bulletin, 13, pp. 37–41.Google Scholar
Freedman, A.P., Ibanez-Meier, R., Herring, T.A., Lichten, S.M., Dickey, J.O., 1994, Journal of Geophysical Research, 21, 9, pp. 769–772.Google Scholar
Gipson, J.M. 1996, Journal of Geophysical Research, 101, B12, pp. 28051–28064.CrossRefGoogle Scholar
Hefty, J., Rothacher, M., Springer, T., Weber, R. Beutler, G., 1999, Journal of Geodesy, submitted.Google Scholar
Kouba, J., Beutler, G., Neilan, R.E., 1998, Proceedings of 11th International Workshop on Laser Ranging, in press.Google Scholar
Kouba, J., Beutler, G., Rothacher, M., 2000 This Volume.Google Scholar
Lichten, S.M., Marcus, S.L., Dickey, J.O., 1992, Journal of Geophysical Research, 99, 6, pp. 537–540.Google Scholar
Mueller, I.I., 1992, International Association of Geodesy Symposia, 109, pp. 1–22, Springer.Google Scholar
Rothacher, M., Mervart, L. 1996, The Bernese GPS Software Version Ą.0, Astronomical Institute, University of Bern.Google Scholar
Rothacher, M., 1998, Habilitation Thesis, University of Bern, pp. 65–104.Google Scholar
Rothacher, M., Beutler, G., Herring, T.A., Weber, R., 1999, Journal of Geophysical Research, 104, B3, pp. 4835–4859.CrossRefGoogle Scholar
Weber, R., 1996, Österreichische Zeitschrift für Vermessungswesen und Geoinformation, 84, 3, pp. 269–275.Google Scholar
Weber, R., Rothacher, M., 2000, This Volume.Google Scholar