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(α−2L) Terms as Obtained from PZT Observations

Published online by Cambridge University Press:  14 August 2015

Shigetaka Iijima ,
Shigeru Fujii  and
Yukio Niimi
Shigetaka Iijima
Affiliation:
Tokyo Astronomical Observatory, University of Tokyo
Shigeru Fujii
Affiliation:
Tokyo Astronomical Observatory, University of Tokyo
Yukio Niimi
Affiliation:
Tokyo Astronomical Observatory, University of Tokyo

Abstract

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Periodic terms with arguments such as (α−2L) and (2α−2L) etc. which appear via various phenomena in the results of time and latitude observations by PZT are summarized in analytical forms in order to clarify their mutual relation. Numerical values in time and latitude for these terms to be expected at the Tokyo PZT are also given. From the data of time observations obtained by the Tokyo PZT during the past 15 years, amplitudes of the terms, cos(α−2Lα) and sin(2α−2Lα) in time, are obtained as +0.72 and 1.21 ms, respectively. These results give the value of (l+k-ℓ) as 1.14, and the values of nutation coefficients for 2L, and

Type
Part I: Time
Information
Symposium - International Astronomical Union , Volume 82: Time and the Earth's Rotation , 1979 , pp. 79 - 84
Copyright
Copyright © Reidel 1979 

References

McCarthy, D.D.: 1976, Astron. J. 8l, p. U82.Google Scholar