Journal of Astronomy & Space Sciences, 2023 This study examined the effect of solar flux (F10.7) and sunspots number (R) on the daily variation of equatorial electrojet (EEJ) and morning/afternoon counter electrojet (MCEJ/ACEJ) in the ionospheric E region across the eight longitudinal ...
A. Cherkos
semanticscholar +1 more source
Journal of Geophysical Research: Space Physics, 2021 In this work, we report the ionospheric F‐layer responses over the Brazilian equatorial sector to a counter electrojet event that occurred during the solar minimum period of June 2009.
A. M. Santos +10 more
semanticscholar +1 more source
Prompt penetration effects on Equatorial Electrojet from the Indian sector
Earth, 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
Meridional equatorial electrojet current in the American sector [PDF]
Annales 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
Observations of equatorial ionization anomaly over Africa and Middle East during a year of deep minimum [PDF]
Annales 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
Electrodynamical response of the Indian low-mid latitude ionosphere to the very large solar flare of 28 October 2003 – a case study [PDF]
Annales 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
On the origin of pre-reversal enhancement of the zonal equatorial electric field [PDF]
Annales Geophysicae, 2009 In November 2004, a large and variable interplanetary electric field (IEF) was felt in the reference frame of the Earth. This electric field penetrated to the magnetic equator and, when the Jicamarca Radio Observatory (JRO) was in the dusk sector ...
M. C. Kelley, R. R. Ilma, G. Crowley
doaj +1 more source
Equatorial electrojet at African longitudes: first results from magnetic measurements [PDF]
Annales Geophysicae, 1998 In the framework of the French participation in the International Equatorial Electrojet Year (IEEY), ten magnetotelluric stations were installed between November 1992 and November 1994 along a 1200-km-long meridian profile, between Lamto (latitude 6.2°
V. Doumouya +4 more
doaj +1 more source
Longitudinal Morphology of the Morning Counter Equatorial Electrojet during Low Solar Activity
International Astronomy and Astrophysics Research JournalAbbas, M +4 more
semanticscholar +2 more sources
Sq and EEJ—A Review on the Daily Variation of the Geomagnetic Field Caused by Ionospheric Dynamo Currents [PDF]
, 2016 A record of the geomagnetic field on the ground sometimes shows smooth daily variations on the order of a few tens of nano teslas. These daily variations, commonly known as Sq, are caused by electric currents of several μA/m^2 flowing on the sunlit side ...
Maute, Astrid, Yamazaki, Yosuke
core +2 more sources