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Comparison of Polar Motion Data from the 1980 Project Merit Short Campaign

Published online by Cambridge University Press:  12 April 2016

Ivan I. Mueller
Affiliation:
Dept. of Geodetic Science, Ohio State University Columbus, Ohio 43210 U.S.A.
B. S. Rajal
Affiliation:
Dept. of Geodetic Science, Ohio State University Columbus, Ohio 43210 U.S.A.
Y. S. Zhu
Affiliation:
Dept. of Geodetic Science, Ohio State University Columbus, Ohio 43210 U.S.A.

Abstract

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Polar motion coordinates obtained during the Merit short campaign by various techniques, as well as their variations, have been compared directly and through a smoothing procedure. In the direct comparison, values at selected dates were differenced in all combinations and the rms values computed. Through the smoothing procedure the amplitudes of the annual and Chandler motions as well as the centers of the polhodes were estimated and compared with predicted values based on the previous six years of polar motion data. The results are somewhat inconclusive, mainly due to the shortness of the campaign and the (practically) real time data reduction techniques. To resolve the issue of possible systematic differences, the proposed MERIT main campaign seems an absolute necessity.

Type
Part I
Copyright
Copyright © Reidel 1982