Results 1 to 10 of about 3,685 (224)

Spatial and temporal variations of small-scale plasma turbulence parameters in the equatorial electrojet: HF and VHF radar observational results [PDF]

open access: yesAnnales Geophysicae, 2005
The spatial and temporal variations of various parameters associated with plasma wave turbulence in the equatorial electrojet (EEJ) at the magnetic equatorial location of Trivandrum (8.5° N, 77° E; dip 0.5° N) are studied for the first ...
G. Manju   +2 more
doaj   +5 more sources

Variabilities of mesospheric tides and equatorial electrojet strength during major stratospheric warming events [PDF]

open access: yesAnnales Geophysicae, 2009
The present study demonstrates the relationship between the high latitude northern hemispheric major sudden stratospheric warming (SSW) events and the reversal in the afternoon equatorial electrojet (EEJ), often called the counter-electrojet (CEJ ...
S. Sridharan   +2 more
doaj   +4 more sources

The Equatorial Electrojet: A brief review

open access: yesGeofísica Internacional, 1992
Se presenta un breve resumen del descubrimiento del electrochorro ecuatorial (EEJ) y de la importancia de América del Sur en la investigación del EEl. Se discuten algunas cuestiones resueltas y no resueltas sobre el EEJ y el “contraelectrochorro" (CEJ ...
L. Muniz Barreto
doaj   +3 more sources

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

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   +2 more sources

Letter to the Editor: Geomagnetic storm effects at low latitudes [PDF]

open access: yesAnnales Geophysicae, 1999
The geomagnetic horizontal (H) field from the chain of nine observatories in India are used to study the storm-time and disturbance daily variations.
R. G. Rastogi, R. G. Rastogi
doaj   +3 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

Prompt penetration effects on Equatorial Electrojet from the Indian sector

open access: yesEarth, Planets and Space, 2023
The morphology of prompt penetration effects (PP) in the Equatorial Electrojet (EEJ) at Vencode (VEN, Geomagnetic latitude 0.29ºN) was studied using 5-min samples of EEJ and interplanetary Ey component data from 2011 to 2015.
R. K. Archana   +2 more
doaj   +1 more source

Observations of equatorial ionization anomaly over Africa and Middle East during a year of deep minimum [PDF]

open access: yesAnnales Geophysicae, 2017
In this work, we investigated the veracity of an ion continuity equation in controlling equatorial ionization anomaly (EIA) morphology using total electron content (TEC) of 22 GPS receivers and three ground-based magnetometers (Magnetic Data ...
O. Bolaji   +13 more
doaj   +1 more source

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   +1 more source

Electrodynamical response of the Indian low-mid latitude ionosphere to the very large solar flare of 28 October 2003 – a case study [PDF]

open access: yesAnnales Geophysicae, 2009
The electrodynamic effects on the low-mid latitude ionospheric region have been investigated using GPS (global positioning system) data, ionosonde data and ΔH values, during the very large solar flare (X17.2/4B) of 28 October 2003.
G. Manju   +4 more
doaj   +1 more source

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