Multistation digisonde observations of equatorial spread F in South America [PDF]
Annales Geophysicae, 2004 Directional ionogram and F-region drift observations were conducted at seven digisonde stations in South America during the COPEX campaign from October to December 2002.
B. W. Reinisch +7 more
doaj +1 more source
Gravity wave initiation of equatorial spread F/plasma bubble irregularities based on observational data from the SpreadFEx campaign [PDF]
Annales Geophysicae, 2009 The data from ground based experiments conducted during the 2005 SpreadFEx campaign in Brazil are used, with the help of theoretical model calculations, to investigate the precursor conditions, and especially, the role of gravity waves, in the ...
M. A. Abdu +5 more
doaj +1 more source
Seasonal variations of equatorial spread-
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) instability mechanism which includes the gravitational and cross-field instability terms.
B. V. Krishna Murthy, K. S. V. Subbarao
openaire +4 more sources
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
doaj +1 more source
Observations of GPS ionospheric scintillations over Wuhan during geomagnetic storms [PDF]
, 2006 International audienceDuring the two geomagnetic storms which occurred on 1 October 2002 and 22 January 2004, the strong ionospheric scintillations of the GPS L1 band were observed at Wuhan station (30.6° N, 114.4° E, 45.8° Dip), which is situated near ...
Li, G., Ning, B., Wan, W., Zhao, B.
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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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Eastward traverse of equatorial plasma plumes observed with the Equatorial Atmosphere Radar in Indonesia [PDF]
, 2006 The zonal structure of radar backscatter plumes associated with Equatorial Spread F (ESF), probably modulated by atmospheric gravity waves, has been investigated with the Equatorial Atmosphere Radar (EAR) in West Sumatra, Indonesia (0.20° S ...
M. Yamamoto +5 more
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Daytime Equatorial Spread F‐Like Irregularities Detected by HF Doppler Receiver and Digisonde
Space Weather, 2021 Daytime equatorial spread F (ESF) is not as common as nighttime ESF due to the presence of a highly conducting E‐layer during the daytime which counteracts the development of F‐layer plasma irregularities.
B. Olugbon +6 more
doaj +1 more source
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
doaj +1 more source
Sub-Sistem Penerima Pada Sistem Pengukuran Kanal HF Pada Lintasan Merauke-Surabaya [PDF]
, 2014 Sistem High Frequency (HF) dapat digunakan untuk komunikasi ke/dari daerah-daerah terpencil yang menghalangi infrastruktur jaringan yang muncul di banyak tempat di pulau- pulau Indonesia.
Adhitya, A. D. (Aryo) +2 more
core +3 more sources