Results 31 to 40 of about 84,388 (175)
Wavelet analysis of the Chandler wobble [PDF]
Journal of Geophysical Research: Solid Earth, 1998 Wavelet analysis is applied to analyze polar motion spanning the years 1890–1997. First, the wavelet transform is used to identify the components (prograde and retrograde) present in the data. This wavelet transform is subsequently used to filter and reconstruct each component.
Dominique Gibert +2 more
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Journal of Astronomy and Space SciencesTwo main components of polar motion are Chandler wobble and annual wobble. Annual wobble is obviously caused by the seasonal perturbations on the Earth – such was suspected as well as readily confirmed in unison.
Sung-Ho Na, Yu Yi
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Dissipation and Ellipticity of the Chandler Wobble [PDF]
International Astronomical Union Colloquium, 2000 AbstractThe Chandler wobble, one of the main feature of the Earth’s polar motion, is related to the properties of the mantle and liquid core as well as the mobility of the oceans. The equilibrium pole tide and mantle anelasticity both lengthen the Chandler period, moreover, the former imposes a slight ellipticity on the pole path, and the latter is ...
Yaozhong Zhu, Buxi Gao
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SYNCHRONIZATION OF TERRESTRIAL PROCESSES WITH FREQUENCIES OF THE EARTH-MOON-SUN SYSTEM
Odessa Astronomical Publications, 2016 It is established that the frequencies of the quasi-biennial oscillation (QBO) of atmospheric winds and the Chandler wobble (CW) of the Earth's poles are synchronized with each other and with the fundamental frequencies of the Earth–Moon–Sun system.
N. S. Sidorenkov
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Excitation of the Chandler Wobble [PDF]
International Astronomical Union Colloquium, 2000 AbstractThe redistribution of air and water masses between the Pacific and Indian oceans during the El Niño/Southern oscillation (ENSO) changes the components of the Earth’s inertia tensor and shifts the position of the pole of the Earth’s rotation. The spectrum of the ENSO has components with periods of about 6, 3.6, 2.8, and 2.4 years.
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Comments on the Chandler wobble Q [PDF]
Geophysical Journal International, 1979 Summary. The Chandler wobble Q, as obtained from the astronomical data cannot be equated with the Q, of the source of damping, as an examination of Chandler wobble energetics reveals. We find that if dissipation occurs in the mantle then Q, = 9 Q,, implying that either the mantle Q is frequency dependent or the wobble Q is much larger than 100.
J. B. Merriam, K. Lambeck
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Statistical property of the Chandler wobble excitation function
, 2004 The Chandler wobble excitation function (hereinafter, geodetic excitation) is obtained by removing the seasonal components and low frequency components with periods from several years to decades from the polar motion excitation function derived from ...
Liao, DC +3 more
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The Rheology of the Earth in the Intermediate Time Range
Annals of Geophysics, 1970 The evidence bearing upon the rheology of the " tectonically<br />significant layers" of the Earth (" tectonosphere ") in the intermediate<br />time range (4 hours to 15000 years) is analyzed.
A. E. SCHEIDEGGER
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Geodynamic Research at the Department of Planetary Geodesy, SRC PAS
Reports on Geodesy and Geoinformatics, 2016 The Department of Planetary Geodesy of the Space Research Centre PAS has been conducting research on a broad spectrum of problems within a field of global dynamics of the Earth.
Brzeziński Aleksander +11 more
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The Period of the Chandler Wobble [PDF]
Symposium - International Astronomical Union, 1980 Realistic models of the Earth are known to possess a solid anelastic inner core, mantle and crust, and a fluid core and oceans. How might we go about calculating the theoretical free period of the Chandler wobble of such an Earth model? Let xi be a set of Cartesian axes with an origin at the center of mass, and let ωi be the instantaneous angular ...
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