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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Climatology of Spread F over Tucumán from Massive Statistical Analysis of Autoscaled Data
Atmosphere, 2021 Automatic ionogram interpretation methods developed for real-time ionospheric monitoring can be applied in retrospective studies to analyze large quantities of data. The Autoscala software, implemented for such a purpose, includes a routine for automatic
Carlo Scotto, Dario Sabbagh
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On the Dynamics of Equatorial Spread F [PDF]
Australian Journal of Physics, 1974 A theory is proposed to explain the occurrence of spread F in the equatorial ionosphere. It is envisaged as a multistage process involving: movement of ionization drift with atmospheric gravity waves that results in spatial resonance, consequent ...
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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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Forecasting Equatorial Ionospheric Convective Instability With ICON Satellite Measurements
Space Weather, 2023 Measurements from the Ionospheric Connections Explorer satellite (ICON) form the basis of direct numerical forecast simulations of plasma convective instability in the postsunset equatorial F region ionosphere.
D. L. Hysell +4 more
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Effects of the postsunset vertical plasma drift on the generation of equatorial spread F
Progress in Earth and Planetary Science, 2018 Equatorial spread F (ESF) irregularities are caused by plasma instability processes in the equatorial ionosphere and especially related to plasma bubble phenomena in the topside F region.
Chaosong Huang
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Generation of large-scale equatorial F-region plasma depletions during lowrange spread-F season [PDF]
Annales Geophysicae, 2004 All-sky imaging observations of the F-region OI 630nm nightglow emission allow us to visualize large-scale equatorial plasma depletions, generally known as trans-equatorial plasma bubbles. Strong range type spread-F is the radio signature of these
Y. Sahai +6 more
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A model for equatorial explosive spread F
Geophysical Research Letters, 1984 Explosive spread F was first described by Woodman and LaHoz [1976]. In such events the 50 MHz radar signal rises at Jicamarca to 10‐20 db above the noise level within a few milliseconds but then disappears within 100 ms or less. Woodman has suggested that electric fields from thunderstorms might drive a plasma instability which could cause these echoes,
M. C. Kelley +3 more
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Radar Observations of 8.3-m scale equatorial spread F irregularities over Trivandrum [PDF]
Annales Geophysicae, 2004 In this paper, we present observations of equatorial spread F (ESF) irregularities made using a newly installed 18MHz radar located at Trivandrum. We characterize the morphology and the spectral parameters of the 8.3-m ESF irregularities which are ...
D. Tiwari +6 more
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Equatorial spread F studies using SAMI3 with two-dimensional and three-dimensional electrostatics [PDF]
Annales Geophysicae, 2013 This letter presents a study of equatorial F region irregularities using the NRL SAMI3/ESF model, comparing results using a two-dimensional (2-D) and a three-dimensional (3-D) electrostatic potential solution. For the 3-D potential solution, two cases
H. C. Aveiro, J. D. Huba
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