Results 11 to 20 of about 312 (156)

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   +10 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   +6 more sources

Morphological aspects of a new type of counter electrojet event [PDF]

open access: yesAnnales Geophysicae, 1999
The study describes the time and space morphologies of a rather new type of counter electrojet event on the basis of data from the excellent chain of magnetic and ionospheric observatories along the Indo-Russian longitude sector.
R. G. Rastogi
doaj   +6 more sources

Indices of equatorial electrojet and counter-electrojet in the Indian region: Evolution of the indices and their authenticity [PDF]

open access: yesJournal of Earth System Science, 1983
Indices of the equatorial electrojet and counter-electrojet in the Indian region have been evolved based on certain reasonable assumptions, by a criterion depending on the difference in the horizontal field strength between a station under the electrojet axis (Trivandrum) and a station outside the jet influence (Alibag).
B N Bhargava, B R Arora, N S Sastri
exaly   +4 more sources

Equatorial Counter Electrojet Longitudinal and Seasonal Variability in the American Sector [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 2018
AbstractThe equatorial electrojet occasionally reverses during morning and afternoon hours, leading to periods of westward current in the ionospheric E region that are known as counter electrojet (CEJ) events. We present the first analysis of CEJ climatology and CEJ dependence on solar flux and lunar phase for the Brazilian sector, based on an ...
Gabriel Soares   +2 more
exaly   +7 more sources

Unveiling the combined effects of neutral dynamics and electrodynamic forcing on dayside ionosphere during the 3–4 February 2022 “SpaceX” geomagnetic storms [PDF]

open access: yesScientific Reports, 2023
Geomagnetic storms of G1-class were observed on 3 and 4 February 2022, which caused the loss of 38 out of 49 SpaceX satellites during their launch due to enhanced neutral density.
Geetashree Kakoti   +3 more
doaj   +2 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   +2 more sources

Counter electrojet features in the Brazilian sector: simultaneous observation by radar, digital sounder and magnetometers [PDF]

open access: yesAnnales Geophysicae, 2009
In the present work we show new results regarding equatorial counter electrojet (CEJ) events in the Brazilian sector, based on the RESCO radar, two set of fluxgate magnetometer systems and a digital sounder.
C. M. Denardini   +7 more
doaj   +3 more sources

The effect of counter electrojet on the plasma distribution of the topside ionosphere

open access: yesGeophysical Research Letters, 1987
Evidence of strong correlation between the counter electrojet and the behaviour of the topside ionosphere is presented here. The reality of the counter electrojet is established by the magnetic field variations of the H‐component and the bottom side ionograms at Huancayo.
S. Alex, M. Roy, R. G. Rastogi
openaire   +2 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   +5 more sources

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