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Theories of Notation and Polar Motion I,
1980Abstract : The present report attempts a systematic presentation and review of modern theories of the earth's rotation (precession, nutation, and polar motion) for a rigid earth, a purely elastic earth, and the Poincare model consisting of a rigid mantle and a liquid core.
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On the Excitation and Damping of the Polar Motion
Publications of the Astronomical Society of Japan, 1965Abstract In the present paper, the excitation and damping of the polar motion are treated as a series of stochastic process, and the damping coefficient and constants concerning to the excitation of the polar motion are determined. The damping .coefficient thus determined is 0.320 (year–1), which is very close to that obtained by WALKER ...
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Journal of Geodynamics, 1984
Abstract We establish a general theory that describes the rotational motion of a layered, oblate, elastic Earth under the influence of tidal forces when account is taken of the liquid outer core. We obtain a linearized version of the Navier-Stokes equation; within it not only have we retained the Coriolis and centrifugal acceleration terms, but also ...
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Abstract We establish a general theory that describes the rotational motion of a layered, oblate, elastic Earth under the influence of tidal forces when account is taken of the liquid outer core. We obtain a linearized version of the Navier-Stokes equation; within it not only have we retained the Coriolis and centrifugal acceleration terms, but also ...
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On the Damping Coefficient of the Polar Motion
Publications of the Astronomical Society of Japan, 1966Abstract The theory of the excitation and damping of the polar motion is developed for stationary excitation functions, and sufficient conditions for the excitation function are investigated. The relation between autocorrelation functions of the polar motion and the excitation function, μq(s) and μQ(s) is found to be μ q s
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Designing Rotary Linkages for Polar Motions
2021 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2021Aravind Baskar +3 more
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1970
The work of the International Polar Motion Service which aims at the study of polar motion has progressed smoothly from its beginning at 1962.0 with the collaboration of more than 50 stations in 24 countries — Algeria, Argentina, Australia, Belgium, Brazil, Canada, Chile, China, Czechoslovakia, Equador, Finland, France, Germany, Italy, Japan, Poland ...
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The work of the International Polar Motion Service which aims at the study of polar motion has progressed smoothly from its beginning at 1962.0 with the collaboration of more than 50 stations in 24 countries — Algeria, Argentina, Australia, Belgium, Brazil, Canada, Chile, China, Czechoslovakia, Equador, Finland, France, Germany, Italy, Japan, Poland ...
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Polarization, conformal invariants, and Brownian motion
1998For a set \(A\) in the complex plane, let \(A_+=A\cap \{z:\text{Im} z\geq 0\}\), let \(A_-=A\cap \{z:\text{Im} z\leq 0\}\), and let \(\overline A=\{\overline z:z\in A\}\). If \(A\) is either an open set or a closed set, define the polarization of \(A\) by \(P(A)= (A\cup \overline A)\cup (A \cap \overline A)\).
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Relationship between polar motion and key hydrological elements at multiple scales
Science China Earth Sciences, 2022Shanshan Deng, Xingguo Mo, Suxia Liu
exaly