Results 71 to 80 of about 3,658 (176)

The Geomagnetic Storm on 10–12 May 2024 and Its Effect on the Swedish Power Grid

open access: yesSpace Weather, Volume 24, Issue 2, February 2026.
Abstract On 10–12 May 2024, at least five interplanetary coronal mass ejections (ICMEs) arrived at Earth and caused the strongest geomagnetic storm in over 20 years. During this geomagnetic storm, a disturbance occurred in a transformer in southern Sweden, causing a drop in power supply in the power line connecting Sweden and Poland.
A. V. L. Wallner   +12 more
wiley   +1 more source

Preliminary results of measurements of sq currents and the equatorial electrojet near peru [PDF]

open access: yes
Measurement of electric current, magnetic field, and electron density in ionosphere using Nike-Apache sounding ...
Cahill, L. J., Jr., Maynard, N. C.
core   +1 more source

Mode-coupling and nonlinear Landau damping effects in auroral Farley-Buneman turbulence [PDF]

open access: yes, 1998
The fundamental problem of Farley-Buneman turbulence in the auroral $E$-region has been discussed and debated extensively in the past two decades. In the present paper we intend to clarify the different steps that the auroral $E$-region plasma has to ...
Buneman O.   +20 more
core   +3 more sources

Analysis of Ionospheric Disturbances Near 120°E in the Asia‐Pacific Sector During the May 2024 Superstorm Using Multi‐Instrument Observations

open access: yesSpace Weather, Volume 24, Issue 2, February 2026.
Abstract On 10 May 2024, a severe G5 geomagnetic storm—the most intense of solar cycle 25—significantly disturbed the global ionosphere. This study presents a comprehensive analysis using multi‐instrument observations, including ground‐based measurements from BDS‐GEO total electron content (TEC), digital ionosondes, and magnetometers; model outputs ...
Yue Sun   +4 more
wiley   +1 more source

On the height variation of the E-region cowling conductivity ? effect of charged dust particles [PDF]

open access: yes, 2006
International audienceHeight profiles of the Cowling conductivity in the electrojet region, estimated using the atmospheric parameters given by the existing models like CIRA or MSIS and measured electron density profiles, consistently show the heights of
Kulkarni, V. H., Muralikrishna, P.
core   +2 more sources

Spatial Scale of Ionospheric Equatorial Electrojet Using Longitude Gradient of Magnetic Data from Swarm Satellites

open access: yesApplied Sciences
The equatorial electrojet (EEJ) is an eastward electric current system in the ionosphere located along the dip equator. Investigating the small-scale spatial gradients of the EEJ is essential to elucidate its fine structure and associated controlling ...
Shuang Liu, Jiaming Ou
doaj   +1 more source

Observations of the Earth's magnetic field from the Space Station: Measurement at high and extremely low altitude using Space Station-controlled free-flyers [PDF]

open access: yes
Simulation studies established that the main (core), crustal and electrojet components of the Earth's magnetic field can be observed with greater resolution or over a longer time-base than is presently possible by using the capabilities provided by the ...
Frawley, J. J.   +2 more
core   +1 more source

Geomagnetic field variations at the equatorial electrojet station in Sri Lanka, Peredinia [PDF]

open access: yes, 2004
The paper discusses the variations of the horizontal (<i>H</i>), vertical (<i>Z</i>) and eastward (<i>Y</i>) components of the geomagnetic field at Peredinia (PRD), an electrojet station in Sri Lanka, with the time of ...
K. Kitamura, R. G. Rastogi, T. Kitamura
core   +1 more source

Solar quiet current response in the African sector due to a 2009 sudden stratospheric warming event [PDF]

open access: yes, 2016
We present solar quiet (Sq) variation of the horizontal (H) magnetic field intensity deduced from Magnetic Data Acquisition System (MAGDAS) records over Africa during an unusual strong and prolonged 2009 sudden stratospheric warming (SSW) event.
Amory-Mazaudier, C.   +10 more
core   +4 more sources

Empirical Model of Equatorial ElectroJet (EEJ) Using Long‐Term Observations From the Indian Sector

open access: yesSpace Weather
The Equatorial Electrojet (EEJ) is one of the important near‐earth space weather phenomena which exhibits significant diurnal, seasonal and solar activity variations.
S. Tulasi Ram   +7 more
doaj   +1 more source

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