Bottom-type scattering layers and equatorial spread F [PDF]
Annales Geophysicae, 2004 Jicamarca radar observations of bottom-type coherent scattering layers in the post-sunset bottomside F-region ionosphere are presented and analyzed.
D. L. Hysell, J. Chun, J. L. Chau
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Geomagnetic storm and equatorial spread-F [PDF]
Annales Geophysicae, 2004 In August 2000, a new ionospheric sounding station was established at Sao Jose dos Campos (23.2° S, 45.9° W; dip latitude 17.6° S), Brazil, by the University of Vale do Paraiba (UNIVAP). Another ionospheric sounding station was established
F. Becker-Guedes +6 more
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Resolution of the equatorial spread F problem: Revisited
Frontiers in Astronomy and Space Sciences, 2023 An overview of recent advances made in understanding the phenomenon of equatorial spread F (ESF) is presented and a discussion of unresolved issues that need to be addressed. The focus is on research that has occurred in the last decade.
J. D. Huba
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Spread F – an old equatorial aeronomy problem finally resolved? [PDF]
Annales Geophysicae, 2009 One of the oldest scientific topics in Equatorial Aeronomy is related to Spread-F. It includes all our efforts to understand the physical mechanisms responsible for the existence of ionospheric F-region irregularities, the spread of the traces in a ...
R. F. Woodman
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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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Simultaneous observations of equatorial F-region plasma depletions over Brazil during the Spread-F Experiment (SpreadFEx) [PDF]
Annales Geophysicae, 2009 From September to November 2005, the NASA Living with a Star program supported the Spread-F Experiment campaign (SpreadFEx) in Brazil to study the effects of convectively generated gravity waves on the ionosphere and their role in seeding Rayleigh ...
P.-D. Pautet +6 more
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Equatorial Spread F structures and associated airglow intensity variations observed over Gadanki [PDF]
Annales Geophysicae, 2008 Co-ordinated campaigns have been conducted from Gadanki (13.5° N, 79.2° E, dip lat 6.4° N) by operating simultaneously the Indian MST radar in ionospheric coherent backscatter mode and by monitoring thermosphere airglow line emissions ...
R. Sekar +3 more
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Gravity wave and tidal influences on equatorial spread F based on observations during the Spread F Experiment (SpreadFEx) [PDF]
Annales Geophysicae, 2008 The Spread F Experiment, or SpreadFEx, was performed from September to November 2005 to define the potential role of neutral atmosphere dynamics, primarily gravity waves propagating upward from the lower atmosphere, in seeding equatorial spread F (ESF)
D. C. Fritts +10 more
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Equatorial spread F fossil plumes [PDF]
Annales Geophysicae, 2010 Behaviour of equatorial spread F (ESF) fossil plumes, i.e., ESF plumes that have stopped rising, is examined using the NRL SAMI3/ESF three-dimensional simulation code.
J. Krall +3 more
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The Effect of Equatorial Spread F on Relative Orbit Determination of GRACE Using Differenced GPS Observations [PDF]
Journal of Astronomy and Space Sciences, 2009 In this paper, relative orbit of Low Earth Orbit satellites is determined using only GPS measurements and the effects of Equatorial Spread-F (ESF), that is one of biggest ionospheric irregularities, are investigated.
Kyoung-Min Roh +3 more
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