Results 71 to 80 of about 5,760 (194)
Frontiers in Astronomy and Space Sciences, 2022 Apart from the rapid ionospheric response to geomagnetic forcing originating from the Sun during extreme space weather events, forcing from the lower atmosphere below still exerts a significant influence on the ionosphere during quiet-time conditions ...
O. R. Idolor +4 more
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Ionospheric response to the corotating interaction region-driven geomagnetic storm of October 2002 [PDF]
, 2009 Unlike the geomagnetic storms produced by coronal mass ejections (CMEs), the storms generated by corotating interaction regions (CIRs) are not manifested by dramatic enhancements of the ring current. The CIR-driven storms are however capable of producing
Borovsky +33 more
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Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract Flares originate from the impulsive release of magnetic energy in the solar atmosphere. The rise in X‐ray flux enhances ionization/electron content in the upper atmosphere, modifying the photochemical and dynamical processes that govern the ionosphere‐thermosphere behavior.
Komal, Duggirala Pallamraju
wiley +1 more source
Space Weather, 2021 We report on an extreme ionospheric plasma density enhancement and Global Positioning System (GPS) scintillation at dawn, observed within the expanding equatorial ionization anomaly (EIA).
Sebastijan Mrak +3 more
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Solar activity variations of the equatorial ionization anomaly [PDF]
, 2017 18th EISCAT symposiumSession E3: Ionoshere/thermosphere/mesosphereMay 27 (Sat), Poster ...
core +1 more source
Wave‐Based Quantification of Ion Composition in the Earth's Magnetosphere‐Ionosphere‐Coupling Region
Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.Abstract Ion composition critically determines the basic kinetic characteristics of plasma and affects energy transmission of the magnetosphere. However, it exhibits significant variations with altitude, latitude, local time, longitude, and also with geomagnetic and solar activity.
Zhijie Qin +4 more
wiley +1 more source
First results from ground-based daytime optical investigation of the development of the equatorial ionization anomaly [PDF]
Annales Geophysicae, 1996 A meridional scanning OI 630.0-nm dayglow photometer was operated from Ahmedabad (17.2°N dip lat.) scanning a region towards the south in the upper atmosphere extending over ~5° in latitude from 10.2°N to 15.2°N dip latitude.
D. Pallam Raju +3 more
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Peak characteristics of F2 region over Tucumán: Predictions and measurements [PDF]
, 2008 Ionosonde measurements obtained at Tucuman are used to check the validity of the International Reference Ionosphere model to predict the maximum electron density of F2 region (NmF2) and its height (hmF2) over this station. Data corresponding to different
Ezquer, Rodolfo Gerardo +3 more
core +1 more source
Meridional Currents of the Equatorial Electrojet
Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.Abstract The equatorial electrojet (EEJ) is a prominent eastward geomagnetic current flowing at the dayside magnetic dip equator, peaking just before noon. Associated meridional currents also flow perpendicular to the main current, predicted through modeling and observed in rocket measurements.
X. G. V. M. Topacio, A. Yoshikawa
wiley +1 more source
West African equatorial ionospheric parameters climatology based on Ouagadougou ionosonde station data from June 1966 to February 1998 [PDF]
, 2009 This study is the first which gives the climatology of West African equatorial ionosphere by using Ouagadougou station through three solar cycles. It has permitted to show the complete morphology of ionosphere parameters by analyzing yearly variation ...
C. Amory-Mazaudier +5 more
core +3 more sources