Results 1 to 10 of about 7,941 (118)
Global Modeling of Equatorial Spread F with SAMI3/WACCM‐X
Geophysical Research Letters, 2020 We report the first results of a global ionosphere/thermosphere simulation study that self‐consistently generates large‐scale equatorial spread F (ESF) plasma bubbles in the postsunset ionosphere.
J. D. Huba, H.‐L. Liu
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Regional simulations of equatorial spread F driven with, and an analysis of, WAM-IPE electric fields
Frontiers in PhysicsA three-dimensional, regional simulation is used to investigate ionospheric plasma density irregularities associated with Equatorial Spread F. This simulation is first driven with background electric fields derived from ISR observations.
Aaron Kirchman +2 more
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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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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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Seasonal variations of equatorial spread-F [PDF]
Annales Geophysicae, 1994 The occurrence of spread-F at Trivandrum (8.5°N, 77°E, dip 0.5°N) has been investigated on a seasonal basis in sunspot maximum and minimum years in terms of the growth rate of irregularities by the generalized collisional Rayleigh-Taylor (GRT ...
K. S. V. Subbarao, B. V. Krishna Murthy
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Topside equatorial spread F-related field-aligned Poynting flux: observations and simulations
Earth, Planets and Space, 2022 Electric and magnetic field data from the Swarm constellation mission are used to report on the Poynting flux associated with postsunset topside equatorial spread F.
J. Rodríguez-Zuluaga +3 more
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HF radar observations of equatorial spread-F over West Africa [PDF]
Annales Geophysicae, 1996 New experimental data depicting equatorial spread-F were taken during an HF radar sounding campaign in Korhogo (Ivory Coast, 9°24N, 5°37W, dip 4°S). Range-time-intensity maps of the radar echoes have been analyzed to identify the signatures of density
J.-F. Cécile, P. Vila, E. Blanc
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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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