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Detection of the Chandler Wobble of Mars From Orbiting Spacecraft
Geophysical Research Letters, 2020 sponsorship: The research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (80NM0018D0004). The work of A. R., R. -M. B., S. L. M., T. V.
Alex S. Konopliv +2 more
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Regional Atmospheric Influence on the Chandler Wobble
Advances in Space Research, 2015 International audienceFrom the maps of regional contribution to atmospheric angular momentum (AAM) over the period 1948-2011 (NCEP/NCAR reanalysis data) time domain excitation in Chandler frequency band was extracted by Panteleev's filtering method. This
Christian Bizouard
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Theoretical Model for the Chandler Wobble
Nature, 1967EULER is generally credited with having been the first to show that an axially symmetric rigid body, with a fractional difference between the equatorial and polar moments of inertia equal to that of the Earth, could undergo a free nutation with a period of about 300 days.
G. COLOMBO, I. I. SHAPIRO
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On the Chandler wobble of Mars
Planetary and Space Science, 1996Abstract The possibility of determination of the aggregative state and the radius of the Martian core by Chandler wobble data is discussed. The polar motion under consideration is excited by the Martian atmosphere and convective flow in the liquid core.
V.N. Zharkov, S.M. Molodensky
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On Modulations of the Chandler Wobble Excitation
Journal of Geodynamics, 2012Abstract We derive the Chandler wobble excitation from the polar motion (PM) observations by using the Panteleev corrective filtering. The latter method is based on inversion of the Euler–Liouville equation, with additional filtering in the Chandler frequency band.
Christian Bizouard
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The excitation of the Chandler wobble
Surveys in Geophysics, 1988The cause- or causes-of the excitation of the Chandler wobble is one of the most intriguing problems in geophysics. As a result of one of the most valuable examples of an international programme, the positions of the pole have been determined since the late 19th century with remarkable accuracy.
S. K. Runcorn +11 more
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On the Ellipticity of the Chandler Wobble
Publications of the Astronomical Society of Japan, 1977Abstract On the basis of the assumption of the statistically stationary random process for the excitation of the Chandler wobble with the constant effective damping coefficient α, the statistical relations are derived for the spectral densities and powers of the wobble. It is then shown for the real Earth that the non-isotropic component
Isao Okamoto, Tetsuo Sasao
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2020
<p>The Chandler wobble (CW) and Annual wobble (AW) are the main components of the Earth&#8217;s Polar motion, which play an important role in our understanding of their excitations. The Fourier Basis Pursuit Band-Pass Filtering (FBPBPF) method, which can effectively suppress the edge effect, are applied to extract the CW ...
Guocheng Wang +3 more
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<p>The Chandler wobble (CW) and Annual wobble (AW) are the main components of the Earth&#8217;s Polar motion, which play an important role in our understanding of their excitations. The Fourier Basis Pursuit Band-Pass Filtering (FBPBPF) method, which can effectively suppress the edge effect, are applied to extract the CW ...
Guocheng Wang +3 more
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Period variations of the Chandler wobble
Journal of Geodesy, 2003zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Characteristics of the chandler wobble
Chinese Astronomy, 1980Abstract We carried out a spectral analysis (by FFT and periodograms) on a homogenized set of data of coordinates of the Earth's pole in the period 1900–1969.9, and found the Chandler wobble to have 4 peaks at periods of 1.142, 1.169, 1.199 and 1.230 years. The two main peaks at 1.169 and 1.199 years have equal amplitudes (TABLE 4 and Fig.
Wu Shou-Xian, Wang Shu-he, Hua Ying-min
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