Detection of ionospheric Alfvén resonator signatures in the equatorial ionosphere [PDF]
Journal of Geophysical Research: Space Physics, 2012 The ionosphere response resulting from minimum solar activity during cycle 23/24 was unusual and offered unique opportunities for investigating space weather in the near‐Earth environment. We report ultra low frequency electric field signatures related to the ionospheric Alfvén resonator detected by the Communications/Navigation Outage Forecasting ...
Fernando Simões +12 more
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Non-trough foF2 enhancements at near-equatorial dip latitudes [PDF]
Annales Geophysicae, 1998 Fine resolution series from three equatorial ionosondes of the IEEY network in West Africa have revealed small-scale daytime peak F2 structures, superposed on the slowly varying minimum or "trough" distribution in the ±5° magnetic latitude zone.
E. Sambou, P. M. Vila, A. T. Kobea
doaj +1 more source
Morphological aspects of a new type of counter electrojet event [PDF]
Annales 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
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Characterizations of the diurnal shapes of OI 630.0 nm dayglow intensity variations: inferences [PDF]
Annales Geophysicae, 2002 Measurements of OI 630.0 nm thermospheric dayglow emission by means of the Dayglow Photometer (DGP) at Mt. Abu (24.6° N, 73.7° E, dip lat 19.09° N), a station under the crest of Equatorial Ionization Anomaly (EIA), reveal day-to-day changes in the ...
D. Chakrabarty +6 more
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Letter to the Editor: SCIPION, a new flexible ionospheric sounder in Senegal [PDF]
Annales Geophysicae, 1998 SCIPION is a new state of the art digital sounder that has been devoloped by France Telecom-CNET for ionospheric monitoring and research. Extensive data processing using DSP technology has resulted in a low power, low cost and full featured system for
Y. M. Le Roux +3 more
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Storm-time meridional flows: a comparison of CINDI observations and model results [PDF]
Annales Geophysicae, 2014 During a large geomagnetic storm, the electric field from the polar ionosphere can expand far enough to affect the mid-latitude and equatorial electric fields.
M. Hairston +3 more
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Numerical analysis of global ionospheric current system including the effect of equatorial enhancement [PDF]
Annales Geophysicae, 1999 A modeling method is proposed to derive a two-dimensional ionospheric layer conductivity, which is appropriate to obtain a realistic solution of the polar-originating ionospheric current system including equatorial enhancement.
S. Tsunomura
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Ionospheric response to the 2009 sudden stratospheric warming over the equatorial, low, and middle latitudes in the South American sector [PDF]
, 2015 The present study investigates the ionospheric total electron content (TEC) and F-layer response in the Southern Hemisphere equatorial, low, and middle latitudes due to major sudden stratospheric warming (SSW) event, which took place during January ...
Coster, A. J. +8 more
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Collisional Rayleigh-Taylor instability and shear-flow in equatorial Spread-F plasma [PDF]
Annales Geophysicae, 2003 Collisional Rayleigh-Taylor (RT) instability is considered in the bottom side of the equatorial F-region. By a novel nonmodal calculation it is shown that for an applied shear flow in equilibrium, the growth of the instability is considerably ...
N. Chakrabarti, G. S. Lakhina
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Longitudinal correlation of equatorial ionospheric scintillation [PDF]
Radio Science, 2006 Studies at the Air Force Research Laboratory are investigating methods for the incorporation of expected data sets from the Communication/Navigation Outage Forecast System (C/NOFS) satellite into existing scintillation specification models for an improved knowledge of the regional scintillation environment.
Ron Caton, Keith Groves
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