Results 1 to 10 of about 329,389 (148)
Assimilation of Earth rotation parameters into a global ocean model: excitation of polar motion [PDF]
Nonlinear Processes in Geophysics, 2011 The oceanic contribution to Earth rotation anomalies can be manifold. Possible causes are a change of total ocean mass, changes in current speed or location and changes in mass distribution.
J. Saynisch, M. Wenzel, J. Schröter
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Collective Motion of Vibrated Polar Disks [PDF]
Physical Review Letters, 2010 We experimentally study a monolayer of vibrated disks with a built-in polar asymmetry which enables them to move quasi-balistically on a large persistence length.
Chatè, Hugues +2 more
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IGS polar motion measurement accuracy
Geodesy and Geodynamics, 2017 We elaborate an error budget for the long-term accuracy of IGS (International Global Navigation Satellite System Service) polar motion estimates, concluding that it is probably about 25–30 μas (1-sigma) overall, although it is not possible to quantify ...
Jim Ray, Paul Rebischung, Jake Griffiths
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A new polar motion prediction method combined with the difference between polar motion series
Geodesy and Geodynamics, 2022 After the first Earth Orientation Parameters Prediction Comparison Campaign (1st EOP PCC), the traditional method using least-squares extrapolation and autoregressive (LS + AR) models was considered as one of the polar motion prediction methods with ...
Leyang Wang, Wei Miao, Fei Wu
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Secular polar motion observed by GRACE [PDF]
Journal of Geodesy, 2021 AbstractA long-term drift in polar motion (PM) has been observed for more than a century, and Glacial Isostatic Adjustment (GIA) has been understood as an important cause. However, observed PM includes contributions from other sources, including contemporary climate change and perhaps others associated with Earth’s interior dynamics.
Ki-Weon Seo +4 more
openaire +3 more sources
Analysis and prediction of polar motion using MSSA method
Earth, Planets and Space, 2021 Polar motion is the movement of the Earth's rotational axis relative to its crust, reflecting the influence of the material exchange and mass redistribution of each layer of the Earth on the Earth's rotation axis. To better analyze the temporally varying
Xin Jin, Xin Liu, Jinyun Guo, Yi Shen
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Estimation of Earth Rotation Parameters and Prediction of Polar Motion Using Hybrid CNN–LSTM Model
Remote Sensing, 2023 The Earth rotation parameters (ERPs), including polar motion (PMX and PMY) and universal time (UT1-UTC), play a central role in functions such as monitoring the Earth’s rotation and high-precision navigation and positioning.
Kehao Yu +5 more
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Earth, Planets and Space, 2021 Increasing ice loss of the Antarctic Ice Sheet (AIS) due to global climate change affects the orientation of the Earth’s spin axis with respect to an Earth-fixed reference system (polar motion).
Franziska Göttl +4 more
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Is the Earth’s Magnetic Field a Constant? A Legacy of Poisson
Geosciences, 2023 In the report he submitted to the Académie des Sciences, Poisson imagined a set of concentric spheres at the origin of Earth’s magnetic field. It may come as a surprise to many that Poisson as well as Gauss both considered the magnetic field to be ...
Jean-Louis Le Mouël +4 more
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Sensors, 2020 Polar motion (PM) has a close relation to the Earth’s structure and composition, seasonal changes of the atmosphere and oceans, storage of waters, etc.
Qiaoli Kong +5 more
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