Results 11 to 20 of about 1,547,748 (299)

Formation and motion of a transpolar arc in response to dayside and nightside reconnection [PDF]

open access: yes, 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   +5 more sources

Analysis and prediction of polar motion using MSSA method

open access: yesEarth, 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
doaj   +1 more source

Is the Earth’s Magnetic Field a Constant? A Legacy of Poisson

open access: yesGeosciences, 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
doaj   +1 more source

The influence of Antarctic ice loss on polar motion: an assessment based on GRACE and multi-mission satellite altimetry

open access: yesEarth, 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
doaj   +1 more source

Drift of Earth's Pole Confirms Groundwater Depletion as a Significant Contributor to Global Sea Level Rise 1993–2010

open access: yesGeophysical 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
doaj   +1 more source

Polar Research turns 40

open access: yes, 2022
Among his varied Resistance activities during the Nazi occupation of Norway, Tore Gjelsvik co-edited an underground newspaper called Bulletinen (The Bulletin).
Helle V. Goldman, Goldman, Helle V.
core   +1 more source

Assimilation of Earth rotation parameters into a global ocean model: excitation of polar motion [PDF]

open access: yesNonlinear 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
doaj   +1 more source

Estimation of Earth Rotation Parameters and Prediction of Polar Motion Using Hybrid CNN–LSTM Model

open access: yesRemote 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
doaj   +1 more source

Precise prediction of polar motion using sliding multilayer perceptron method combining singular spectrum analysis and autoregressive moving average model

open access: yesEarth, Planets and Space, 2023
The precise prediction of polar motion parameters is needed for the astrogeodynamics, navigation and positioning of the deep space probe. However, the current prediction methods are limited to predicting polar motion for specific periods, either short ...
Kezhi Wu   +5 more
doaj   +1 more source

Short periodic variations of polar motion and hemispheric atmospheric angular momentum excitation functions in the period 1984-1992 [PDF]

open access: yesAnnales Geophysicae, 1995
Short periodic oscillations with the periods from 10 up to 110 days of the hemispheric components of effective atmospheric angular momentum (EAAM) excitation function and their correlation with polar motion excitation function have been analyzed.
J. Nastula
doaj   +1 more source

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