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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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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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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Mapping the East African Ionosphere Using Ground-based GPS TEC Measurements [PDF]
Journal of Astronomy and Space Sciences, 2016 The East African ionosphere (3°S–18°N, 32°E–50°E) was mapped using Total Electron Content (TEC) measurements from ground-based GPS receivers situated at Asmara, Mekelle, Bahir Dar, Robe, Arbaminch, and Nairobi.
Chalachew Kindie Mengist +3 more
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Relationship between ionospheric plasma bubble occurrence and lightning strikes over the Amazon region [PDF]
Annales Geophysicae, 2018 The vertical coupling between the troposphere and the ionosphere presents some remarkable features. Under intense tropospheric convection, gravity waves may be generated, and once they reach the ionosphere, these waves may seed instabilities and ...
J. Sousasantos +4 more
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Influence of annual atmospheric tide asymmetry on annual anomalies of the ionospheric mean state
Earth and Planetary Physics, 2020 Through respectively adding June tide and December tide at the low boundary of the GCITEM-IGGCAS model (Global Coupled Ionosphere–Thermosphere–Electrodynamics Model, Institute of Geology and Geophysics, Chinese Academy of Sciences), we simulate the ...
ZhiPeng Ren +3 more
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Observations in equatorial anomaly region of total electron content enhancements and depletions [PDF]
Annales Geophysicae, 2005 A GSV 4004A GPS receiver has been operational near the crest of the equatorial anomaly at Udaipur, India for some time now. The receiver provides the line-of-sight total electron content (TEC), the phase and amplitude scintillation index, σφ and S4 ...
N. Dashora, R. Pandey
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Metallic ions in the equatorial ionosphere [PDF]
Journal of Geophysical Research, 1973 Four positive ion composition measurements of the equatorial E region made at Thumba, India, are presented. During the day, the major ions between 90 and 125 km are NO(+) and O2(+). A metallic ion layer centered at 92 km is observed, and found to contain Mg(+), Fe(+), Ca(+), K(+), Al(+), and Na(+) ions.
A. C. Aikin, R. A. Goldberg
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Remote Sensing, 2022 The occurrence of post-sunset equatorial spread-F (ESF) could have detrimental effects on trans-ionospheric radio wave propagation used in modern communications systems.
Prayitno Abadi +8 more
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Possible ionospheric preconditioning by shear flow leading to equatorial spread F [PDF]
Annales Geophysicae, 2005 Vertical shear in the zonal plasma drift speed is apparent in incoherent and coherent scatter radar observations of the bottomside F region ionosphere made at Jicamarca from about 1600–2200 LT.
D. L. Hysell, E. Kudeki, J. L. Chau
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