Results 171 to 180 of about 47,066 (211)

The IMF Structure Effects in Vernal and Autumnal Midlatitude Ionosphere

Studia Geophysica Et Geodaetica, 1982
Анaлuз рaзных uоносферных naрaмеmров весноŭ u осенью зa nерuо¶rt; 1963–1973 . nокaзывaеm, чmо „ еомa нumныŭ“ mun эффекma секmорноŭ сmрукmуры межnлaнеmно о мa нumно о nоля (ММII) nреоблa¶rt;aеm во всеŭ mолще uоносферы зa uсключенuем ¶rt;невноŭ нuжнеŭ uоносферы, ¶rt;е нuкaко о эффекma не вu¶rt;но, нu ожu¶rt;aемо о эффекma ...
Jan Laštovička, L Křivský
exaly   +2 more sources

Trend Characterization for Midlatitude Ionosphere

2020 28th Signal Processing and Communications Applications Conference (SIU), 2020
A locally planar Total Electron Content (TEC) trend model for the midlatitude region encompassing a major part of Turkey and some Balkan countries is investigated by estimating its coefficients for the year 2011. The TEC values are obtained from Global Ionospheric Maps (GIM).
Sölen Kumbay Yildiz, Feza Arikan
openaire   +1 more source

Ionospheric Storms at Midlatitudes

Radio Science, 1970
The total electron content of the ionosphere often responds in a dramatic way to increases in geomagnetic activity. By monitoring the VHF signals from the geostationary satellite ATS 3, it has been possible to study in detail the very pronounced increases in total content often found during the afternoon hours on the day of the commencement of a ...
M. Mendillo, M. D. Papagiannis, J. A. Klobuchar   +2 more
openaire   +1 more source

Empirical modelling of ionospheric storms at midlatitudes

Advances in Space Research, 1998
Abstract The reaction of the F-layer to geomagnetic storms is studied between 35° and 55° (dipole latitude) with as indicator the relative deviation of foF2 to its monthly median. A longitude/UT Fourier development yields the longitudinally averaged offset, the diurnal and the semidiurnal wave.
Plamen Muhtarov, Ivan Kutiev
openaire   +1 more source

A Simulation of the Midlatitude Plasmasphere and Ionosphere.

1979
Abstract : Plasma and heat flow are simulated for an entire field tube from 120 km in the N. hemisphere spanning the plasmasphere to 120 km in the S. hemisphere. (Author)
P. Richards, D. G. Torr, E. R. Young
openaire   +1 more source

Ionospheric effects of solar eclipses at midlatitudes

Geomagnetism and Aeronomy, 2009
The influence of solar eclipses on the ionospheric plasma is considered based of the data of midlatitude vertical sounding stations during the entire period from the beginning of ionospheric studies in Russia. Changes in the electron density in the F and E regions during solar eclipses have been quantitatively estimated.
Kovalev A., Kolesnik A., Kolesnik S., Kolmakov A., Latypov R.   +4 more
openaire   +3 more sources

Midlatitude trough in the night ionosphere

Journal of Geophysical Research, 1966
The October–November 1963 flight of an ion trap on a polar-orbiting oriented satellite has revealed the presence of a well defined trough in the F-region ionization that persists over the nearly four and one-half days during which data were obtained.
openaire   +1 more source

Optical and Radio Observations of Structure in the Midlatitude Ionosphere: Midlatitude Ionospheric Dynamics and Disturbances

2013
We present a reanalysis of optical and radio observations of nighttime ionospheric structure at midlatitudes during heightened geomagnetic activity (Kp > 4). This is done using several examples of structures that have been studied in past publications. The reanalysis is performed in light of recent advances in our understanding of these structures and ...
openaire   +1 more source

Lower midlatitude ionospheric disturbances and the perkins instability

Planetary and Space Science, 1992
Abstract This paper presents a preliminary study of ionospheric disturbances at dip latitudes less than 40° as seen by the ion drift meter and the retarding potential analyzer on board Atmosphere Explorer E during a period of low solar activity. The altitude of observation was relatively low, mostly below 300 km.
W.B. Hanson, F.S. Johnson
openaire   +1 more source

Dynamics of the midlatitude ionospheric F region at sunrise

Geomagnetism and Aeronomy, 2012
The behavior of the F2 layer at sunrise has been studied based on vertical-incidence ionospheric sounding data in Almaty (76°55′E, 43°15′N). Records with small amplitudes of electron density background fluctuations were selected in order to exactly estimate the onsets of a pronounced increase in the electron density at different altitudes.
A. F. Yakovets, V. V. Vodyannikov, K. Zh. Nurmukhanbetova, G. I. Godrienko, Yu. G. Litvinov   +4 more
openaire   +1 more source