The analysis of six years of VLBI data has yielded corrections to the coefficients of the seven largest terms in the IAU 1980 nutation series with periods of one year or less, with accuracies approaching the truncation error of this nutation series (0.1 mas). This paper examines the methods used to extract the nutation information from the VLBI data, the calculation of the uncertanties of the resultant corrections to the nutation-series coefficients, and current research on the earth's nutations.
The Impact of VLBI on Astrophysics and Geophysics
- Pub Date:
- Earth Rotation;
- Very Long Base Interferometry;
- Annual Variations;
- Error Correcting Devices;
- Long Term Effects;