Results 1 to 10 of about 5,979 (206)

The convection electrojet and the substorm electrojet [PDF]

open access: yesAnnales Geophysicae, 1996
Enhancements in the auroral electrojets associated with magnetospheric substorms result from those in either the electric field or the ionospheric conductivities, or both.
Y. Kamide, R. Nakamura
doaj   +4 more sources

Longitudinal variation of equatorial electrojet and the occurrence of its counter electrojet [PDF]

open access: yesAnnales Geophysicae, 2017
We examined the longitudinal variability of the equatorial electrojet (EEJ) and the occurrence of its counter electrojet (CEJ) using the available records of the horizontal component H of the geomagnetic field simultaneously recorded in the year 2009 (
A. B. Rabiu   +5 more
doaj   +4 more sources

The afternoon counter-electrojet current system along the 75°E meridian during the IEEY [PDF]

open access: yesEarth, Planets and Space, 2017
In the present study, the technique of principal component analysis (PCA) is applied to analyze the hourly mean values of geomagnetic field components D, H, and Z along an Indo-Russian chain of stations during the International Equatorial Electrojet Year
S. K. Bhardwaj, P. B. V. Subba Rao
doaj   +3 more sources

Can lower E-region dust particles be responsible for counter electrojet? [PDF]

open access: yesGeofísica Internacional, 2008
Ablation of meteors leaves a large number of dust particles of sizes ranging from nanometers to several micrometers in the upper mesospheric region. These dust particles can affect the equatorial E-region conductivities in several ways.
V. H. Kulkarni, P. Muralikrishna
doaj   +3 more sources

Spatio-temporal development of large-scale auroral electrojet currents relative to substorm onsets [PDF]

open access: yesAnnales Geophysicae, 2022
During auroral substorms, the electric currents flowing in the ionosphere change rapidly, and a large amount of energy is dissipated in the auroral ionosphere.
S. Käki   +4 more
doaj   +1 more source

Afternoon mid-latitude current system and low-latitude geomagnetic field asymmetry during geomagnetic storms [PDF]

open access: yesAnnales Geophysicae, 1997
For four geomagnetic storms of middle intensity the relationship between the low-latitude magnetic field asymmetry using ASY indices and the intensity of the auroral eastward and westward electrojet was considered.
A. Grafe   +3 more
doaj   +1 more source

AE, D ST and their SuperMAG Counterparts : the effect of improved spatial resolution in geomagnetic indices [PDF]

open access: yes, 2020
For decades, geomagnetic indices have been used extensively to parameterize space weather events, as input to various models and as space weather specifications.
Bergin, Aisling   +2 more
core   +2 more sources

Effect of the solar wind conditions on the ionospheric equivalent current systems [PDF]

open access: yesAnnales Geophysicae, 2013
We employ a global magnetohydrodynamics (MHD) model, namely the PPMLR-MHD model, to investigate the effect of the solar wind conditions, such as the interplanetary magnetic field (IMF) clock angle, southward IMF magnitude and solar wind speed, on the ...
J. J. Zhang   +4 more
doaj   +1 more source

Electrodynamics of an omega-band as deduced from optical and magnetometer data [PDF]

open access: yes, 2009
We investigate an omega-band event that took place above northern Scandinavia around 02:00–02:30 UT on 9 March 1999. In our analysis we use ground based magnetometer, optical and riometer measurements together with satellite based optical images.
Amm, O.   +5 more
core   +9 more sources

Meridional equatorial electrojet current in the American sector [PDF]

open access: yesAnnales Geophysicae, 1999
Huancayo is the only equatorial electrojet station where the daytime increase of horizontal geomagnetic field (H) is associated with a simultaneous increase of eastward geomagnetic field (Y). It is shown that during the counter electrojet period when ∆
R. G. Rastogi
doaj   +1 more source

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