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Polar motions with periods of order a half-Chandler period and less in their temporal variability
, 2001 openaire +2 more sources
THE VARIATION OF THE SEA-LEVEL AND THE BAROMETRIC PRESSURE WITH CHANDLER'S PERIOD
THE VARIATION OF THE SEA-LEVEL AND THE BAROMETRIC PRESSURE WITH CHANDLER'S PERIODopenaire
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The period and Q of the Chandler wobble of Mars
Planetary and Space Science, 2009Abstract The calculations of the Chandler wobble period TW have been performed for a set of interior structure models of Mars with 50- and 100-km thick crust and averaged crustal density varying in the range 2700–3200 kg/m3. The models satisfy new values for the moment of inertia and the elastic tidal Love number k 2 s .
V.N. Zharkov, T.V. Gudkova
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On the period and quality factor of the Chandler wobble
Izvestiya, Physics of the Solid Earth, 2008The motion of the Earth’s geophysical pole is modeled by numerical integration of the Liouville equations. The dependence of variable parameters of these equations (the period of free nutation T and the quality factor of the shell Q) is examined as a function of time and initial data sets used for constructing geophysical perturbing functions.
E. A. Spiridonov, I. Ya. Tsurkis
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Quasi‐periodic wind signal as a possible excitation of Chandler wobble
Journal of Geophysical Research: Solid Earth, 1996The atmospheric contribution to the excitation of the Chandler wobble (CW) is studied for a period of about 11 years period beginning in September 1983, using the wobble data set (SPACE93). Two atmospheric angular momentum (AAM) functions are employed; one is based on Japan Meteorological Agency (JMA) data, and the other is based on U.S.
Masato Furuya, Yozo Hamano, Isao Naito
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Chandler Wobble Period andQDerived by Wavelet Transform
Chinese Journal of Astronomy and Astrophysics, 2004We apply complex Morlet wavelet transform to three polar motion data series, and derive quasi-instantaneous periods of the Chandler and annual wobble by differencing the wavelet transform results versus the scale factor, and then find their zero points. The results show that the mean periods of the Chandler (annual) wobble are 430.71 ± 1.07 (365.24 ± 0.
De-Chun Liao, Yong-Hong Zhou
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Advances in Space Research, 2017
Polar motion consists of both free (Chandler wobble, with approximately 14-month period) and forced components. The latter are caused by different excitations of geophysical origin. Very long-periodic (or secular) part is most probably due to post-glacial rebound, shorter periodic part (with dominant annual period) are caused mainly by motions of the ...
J. Vondrák, C. Ron, Ya. Chapanov
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Polar motion consists of both free (Chandler wobble, with approximately 14-month period) and forced components. The latter are caused by different excitations of geophysical origin. Very long-periodic (or secular) part is most probably due to post-glacial rebound, shorter periodic part (with dominant annual period) are caused mainly by motions of the ...
J. Vondrák, C. Ron, Ya. Chapanov
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Nonlinear long-period tidal forcing with application to ENSO, QBO, and Chandler wobble
2021<p>Apart from its known impact to variations in the Earth&#8217;s length-of-day (LOD) variations, the role of long-period tidal forcing cycles in geophysical behaviours has remained elusive. To explore this further, tidal forcing is considered as a causative mechanisms to the following cyclic processes: El Ni&#241;o ...
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