Results 21 to 30 of about 380,733 (291)
Polar motion at seasonal frequencies [PDF]
Journal of Geodynamics, 1996 report
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Study of Convolutional Neural Networks for Global Parametric Motion Estimation on Log-Polar Imagery
IEEE Access, 2020 The problem of motion estimation from images has been widely studied in the past. Although many mature solutions exist, there are still open issues and challenges to be addressed.
V. Javier Traver, Roberto Paredes
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On the external forcing of global eruptive activity in the past 300 years
Frontiers in Earth Science, 2023 The decryption of the temporal sequence of volcanic eruptions is a key step in better anticipating future events. Volcanic activity results from a complex interaction between internal and external processes, with time scales spanning multiple orders of ...
J-L. Le Mouël +16 more
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Characteristics of Perturbations in Recent Length of Day and Polar Motion [PDF]
Journal of Astronomy and Space Sciences, 2013 Various features of the existing perturbations in the Earth’s spin rotation are investigated for the recent and most reliable data by spectral analysis, filtering, and comparison with idealized model. First, theory of Earth’s spin rotational perturbation
Sung-Ho Na +4 more
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Effects of the Earth’ s triaxiality on the polar motion excitations
Geodesy and Geodynamics, 2012 his study aims to evaluate the significance of the Earth’s triaxiality to the polar motion theory. First of all, we compare the polar motion theories for both the triaxial and rotationally-symmetric Earth models, which is established on the basis of the ...
Chen Wei, Shen Wenbin
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Geodesy and Cartography, 2015 The paper presents a summary of research activities concerning theoretical geodesy performed in Poland in the period of 2011-2014. It contains the results of research on new methods of the parameter estimation, a study on robustness properties of the M ...
Borkowski Andrzej, Kosek Wiesław
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On Classical Dynamics of Affinely-Rigid Bodies Subject to the Kirchhoff-Love Constraints [PDF]
, 2010 In this article we consider the affinely-rigid body moving in the three-dimensional physical space and subject to the Kirchhoff-Love constraints, i.e., while it deforms homogeneously in the two-dimensional central plane of the body it simultaneously ...
Kovalchuk, Vasyl
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Polar Motion — An Overview [PDF]
International Astronomical Union Colloquium, 2000 AbstractAfter one hundred years of intensive study, some aspects of polar motion remain poorly understood. This motion of the Earth’s axis of rotation with respect to its mantle and crust has been observed and studied since the creation of the International Latitude Service.
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Image Motion of Remote Sensing Camera With Wide Field of View Over the Antarctic and Arctic
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 Imaging by the remote sensing camera with a wide field of view (WFV) is of great significance in the issue of polar environment. However, the instability of the image motion velocity poses a huge challenge to the observation task since the direction of ...
Jinliang Han +6 more
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Excitation of Polar Motion [PDF]
International Astronomical Union Colloquium, 2000 AbstractConceptual models of polar motion have evolved over the past century, as improved data revealed signals over progressively wider frequency bands. In the 1890s, Chandler represented polar motion as a sum of discrete components, 14 month and annual terms, and this component model effectively summarized the observations, but did not provide a ...
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