Results 61 to 70 of about 16,295 (228)

Response of the equatorial ionosphere to the geomagnetic DP 2 current system

open access: yesGeophysical Research Letters, 2016
The response of equatorial ionosphere to the magnetospheric origin DP 2 current system fluctuations is examined using ground‐based multiinstrument observations.
E. Yizengaw   +9 more
doaj   +1 more source

Effect of Field Line Torsion on the Polarization of ULF Waves

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract In this paper we suggest a simple modification of the dipole magnetic field which introduces field‐aligned currents and torsion to the field lines. The resulting field lines are not contained in the meridional planes and have resemblance to the geomagnetic field lines in the dawn and dusk flanks of the magnetosphere. We analyze polarization of
K. Kabin, A. W. Degeling, R. Rankin
wiley   +1 more source

Modeling the Jovian magnetosphere under an antiparallel interplanetary magnetic field from a global MHD simulation

open access: yesEarth and Planetary Physics, 2018
We present preliminary results of a new global Magnetohydrodynamics (MHD) simulation model of the Jovian magnetosphere. The model incorporates mass loading from Jupiter's satellite Io, the planet's fast corotation, and electrostatic coupling between its ...
YuXian Wang   +4 more
doaj   +1 more source

Midday reversal of equatorial ionospheric electric field [PDF]

open access: yesAnnales Geophysicae, 1997
A comparative study of the geomagnetic and ionospheric data at equatorial and low-latitude stations in India over the 20 year period 1956–1975 is described.
R. G. Rastogi
doaj   +1 more source

Positive ion temperatures above the F-layer maximum [PDF]

open access: yes, 1965
Positive ion temperatures above F layer maximum from Ariel I satellite ion mass ...
Boyd, R. L. F., Raitt, W. J.
core   +1 more source

A High‐Efficiency Multivariable TEC‐SOFTS Model for Ionospheric TEC Prediction: Validation Over China Area During Low and High Solar Activity Periods

open access: yesSpace Weather, Volume 24, Issue 5, May 2026.
Abstract The ionospheric Total Electron Content (TEC) is a key parameter for characterizing the ionospheric properties. In this study, an efficient multivariable time series prediction model, TEC‐Series Core Fusion and efficient multivariable time series (TEC‐SOFTS), was constructed by combining multiple geomagnetic and solar activity indices ...
Chen Chen   +6 more
wiley   +1 more source

Dynamic Expansion and Merging of the Equatorial Ionization Anomaly During the 10–11 May 2024 Super Geomagnetic Storm

open access: yesRemote Sensing
This study investigates the responses of the equatorial and low-latitude ionosphere in the American–Atlantic longitude sector during the super geomagnetic storm that occurred on 10–11 May 2024.
Ercha Aa, Yanhong Chen, Bingxian Luo
doaj   +1 more source

The intermediate layers and associated tidal motions observed by a digisonde in the equatorial anomaly region [PDF]

open access: yesAnnales Geophysicae, 2003
This investigation presents an initial attempt to analyze a full year of daily ionosonde observations relevant to the determination of plasma densities, tidal structures, and ion transports in the equatorial anomaly region of the lower ionosphere.
C.-C. Lee   +4 more
doaj   +1 more source

Solar Wind‐Magnetosphere‐Ionosphere Coupling During the October 2024 Storms

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Two geomagnetic storms occurred in October 2024 (Oct 6‐9 and 10–12), driven by the impact of a series of interplanetary coronal mass ejections on the magnetosphere. The first was a moderate storm, with peak Sym‐H near −150 nT, whereas the second was intense, Sym‐H reaching −340 nT.
S. E. Milan   +9 more
wiley   +1 more source

Roles of thermospheric neutral wind and equatorial electrojet in pre-reversal enhancement, deduced from observations in Southeast Asia

open access: yesEarth and Planetary Physics, 2021
Previous studies have proposed that both the thermospheric neutral wind and the equatorial electrojet (EEJ) near sunset play important roles in the pre-reversal enhancement (PRE) mechanism.
P. Abadi   +7 more
doaj   +1 more source

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