Results 11 to 20 of about 2,176,992 (296)
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
semanticscholar +1 more source
Neural ODE Differential Learning and Its Application in Polar Motion Prediction
Journal of Geophysical Research - Solid Earth, 2022 This paper introduces a new learning algorithm for accurate, physically driven time series prediction. The fundamental assumption behind the method is that the phenomena follow Ordinary Differential Equations.
M. K. Shahvandi +2 more
semanticscholar +1 more source
Validation of GRACE and GRACE-FO Mascon Data for the Study of Polar Motion Excitation
Remote Sensing, 2021 In this study, we calculate the hydrological plus cryospheric excitation of polar motion (hydrological plus cryospheric angular momentum, HAM/CAM) using mascon solutions based on observations from the Gravity Recovery and Climate Experiment (GRACE) and ...
J. Śliwińska, M. Wińska, J. Nastula
semanticscholar +1 more source
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
semanticscholar +1 more source
Earth, Planets and Space, 2021 In geodesy, a key application of data from the Gravity Recovery and Climate Experiment (GRACE), GRACE Follow-On (GRACE-FO), and Satellite Laser Ranging (SLR) is an interpretation of changes in polar motion excitation due to variations in the Earth’s ...
J. Śliwińska, J. Nastula, M. Wińska
semanticscholar +1 more source
Temporal and spatial change in the relationship between sea-ice motion and wind in the Arctic [PDF]
, 2020 This paper examines the temporal and spatial change in the characteristics of sea-ice motion in the Arctic. Ice motion is generally expressed by a motion at a constant ratio (wind factor) of wind speed, with a certain angle (turning angle) from the wind ...
Yamaguchi, Hajime +2 more
core +1 more source
Formation and motion of a transpolar arc in response to dayside and nightside reconnection [PDF]
, 2005 peer reviewed[ 1] We trace the formation and subsequent motion of a transpolar arc in response to dayside and nightside reconnection. Both high- and low-latitude dayside reconnection are observed, as well as periods of substorm and nonsubstorm nightside ...
Hubert, Benoît +6 more
core +1 more source
Excitation of non-atmospheric polar motion by the migration of the Pacific Warm Pool [PDF]
, 2004 Changes in the annual variation of the Earth's polar motion are found to be largely caused by the variation of the atmospheric angular momentum (AAM). Recent simulation results of oceanic general circulation models further suggest global oceanic effects ...
Liao, XH +8 more
core +1 more source
Sub-daily polar motion from GPS, GLONASS, and Galileo
Journal of Geodesy, 2020 We derive an empirical model of the sub-daily polar motion (PM) based on the multi-GNSS processing incorporating GPS, GLONASS, and Galileo observations.
R. Zajdel +5 more
semanticscholar +1 more source
Oceanic excitations on polar motion: a cross comparison among models [PDF]
, 2005 Recent studies based on various ocean general circulation models (OGCMs) demonstrate that the oceans are a major contributor to polar motion excitations. In this paper, we analyse and compare observed non-atmospheric polar motion excitations with oceanic
Liao, XH, Wilson, CR, Zhou, YH, Chen, JL
core +1 more source