Role of the magnetospheric and ionospheric currents in the generation of the equatorial scintillations during geomagnetic storms [PDF]
Annales Geophysicae, 2004 The equatorial ionosphere parameters, Kp, Dst, AU and AL indices characterized contribution of different magnetospheric and ionospheric currents to the H-component of geomagnetic field are examined to test the geomagnetic activity effect on the ...
L. Z. Biktash
doaj +3 more sources
Equatorial anomaly in the Jovian ionosphere
Geophysical Research Letters, 1981 The electron concentration data from Pioneer 10 and 11 and Voyager 1 and 2 indicate the presence of equatorial anomaly in the Jovian ionosphere, with the peak electron concentration value showing a minimum near the equator.
Mahajan, K. K., K. K. Mahajan
openaire +2 more sources
Improved Ionospheric Correction for Dual Frequency and Differential GPS Positioning Methods [PDF]
, 2007 A new three dimensional (3-D) electron density model has been developed that can give a very accurate description of the real ionospheric variation; latitudinally,longitudinally and altitudinally.
Nagarajoo, Karthigesu
core +7 more sources
VHF coherent radar signals from the E region ionosphere and the relationship to electron drift velocity and ion acoustic velocity [PDF]
, 2002 The Scandinavian Twin Auroral Radar Experiment (STARE) coherent radar system measures the Doppler shifts caused by ∼1 m plasma waves in the high-latitude E region ionosphere.
Nielsen, E. +2 more
core +5 more sources
Geophysical Research Letters, 2023 We report a new ionosphere phenomenon: Equatorial ionization anomaly (EIA) discontinuity (EIAD), based on OI 135.6 nm radiance observations from the Global Observations of Limb and Disk (GOLD), ground‐based total electron content maps and in‐situ ion ...
Xuguang Cai +9 more
doaj +1 more source
Reverse Fountain and the Nighttime Enhancement in the Ionospheric Electron Density Over the Equatorial Region: A Case Study [PDF]
, 2020 This paper focuses on the linkage between reverse fountain effect and anomalous enhancement in the nighttime electron density over the equatorial ionosphere often referred as the ionospheric nighttime enhancement (INE). The Global Positioning System (GPS)
Shreedevi, P. R. +11 more
core +1 more source
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
doaj +1 more source
Measurements and simulation of ionospheric scattering on VHF and UHF radar signals : coherence times, coherence bandwidths and S4 [PDF]
, 2009 Irregularities in the electron density of the ionosphere cause phase and amplitude scintillation on transionospheric VHF and UHF radar signals, particularly at lower radio frequencies.
Cannon, Paul +2 more
core +5 more sources
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
doaj +1 more source