Results 31 to 40 of about 12,498 (259)
Remote Sensing, 2022 Due to the conservation of global angular momentum, polar motion (PM) is dominated by global mass redistributions and relative motions in the atmosphere, oceans and land water at seasonal time scales.
Haibo Liu, Yan Zhou, Jim Ray, Jiesi Luo
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Geodesy and Geodynamics, 2017 At seasonal and intraseasonal time scales, polar motions are mainly excited by angular momentum fluctuations due to mass redistributions and relative motions in the atmosphere, oceans, and continental water, snow, and ice, which are usually provided by ...
Wei Chen +3 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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Geophysical Research Letters, 2023 Climate model estimates show significant groundwater depletion during the 20th century, consistent with global mean sea level (GMSL) budget analysis. However, prior to the Argo float era, in the early 2000’s, there is little information about steric sea ...
Ki‐Weon Seo +7 more
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Collective dynamics of domain structures in liquid crystalline lipid bilayers
Российский технологический журнал, 2022 Objectives. Numerous studies of biosystems indicate the distinct role of quasi-one-dimensional molecular structures in the transport of energy, charges, and information.
V. N. Kadantsev, A. N. Goltsov
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Elliptic polarisation of the polar motion excitation
Journal of Geodesy, 2015 Because of its geophysical interpretation, Earth’s polar motion excitation is generally decomposed into prograde (counter-clockwise) and retrograde (clockwise) circular terms at fixed frequency. Yet, these later are commonly considered as specific to the frequency and to the underlying geophysical process, and no study has raised the possibility that ...
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Free and Forced Wave Motion in a Two-Dimensional Plate with Radial Periodicity
Applied Sciences, 2021 In many practical engineering situations, a source of vibrations may excite a large and flexible structure such as a ship’s deck, an aeroplane fuselage, a satellite antenna, a wall panel.
Elisabetta Manconi +3 more
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Meteorological excitation of the annual polar motion [PDF]
Geophysical Journal International, 1982 Summary. Numerous studies have indicated that the annual term in the polar motion cannot be explained in any detail by meteorological/hydrological excitation and no reasonable alternative excitations have been put forward. Part of the problem has been that the hydrostatic adjustment of the oceans to the atmospheric pressure changes has traditionally ...
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On the Eigen‐Mode Excitation of Linear Oscillators and the Earth's Polar Motion [PDF]
Annalen der Physik, 2020 AbstractBy transforming a 1D second‐order linear oscillator into a 2D first‐order polar motion differential equation, it can be shown that the finite smoothness (i.e., the presence of jump in finite order derivatives) of the applied Newtonian forcing constitutes the sufficient and necessary condition for instantaneous excitation of free eigen‐mode ...
Ming Fang, Xinhao Liao, Xueqing Xu
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Reducing filter effects in GRACE-derived polar motion excitations
Earth, Planets and Space, 2019 Polar motion is caused by mass redistribution and motion within the Earth system. The GRACE (Gravity Recovery and Climate Experiment) satellite mission observed variations of the Earth’s gravity field which are caused by mass redistribution.
Franziska Göttl +3 more
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