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Estimation of the Parameters of the Earth's Polar Motion

Published online by Cambridge University Press:  14 August 2015

Clark R. Wilson
Clark R. Wilson*
Affiliation:
Department of Geological Sciences, The University of Texas at Austin

Extract

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The parameters of the Earth's polar motion have been estimated by a method which accounts for observational error and which treats two possible statistical models for the polar motion excitation process. Both a 100 year and a 78 year long polar motion series have been used to estimate the Chandler wobble frequency, Fc, and quality factor, Qc; the noise level in the polar motion data; and the magnitude of the excitation process. Discussion of the annual component of polar motion has been omitted because its frequency (1 cycle per year (cpy)) and cause (annual motion of air and water) are presumed known.

Type
Part VIII: Geophysics
Information
Symposium - International Astronomical Union , Volume 82: Time and the Earth's Rotation , 1979 , pp. 307 - 312
Copyright
Copyright © Reidel 1979 

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