Results 151 to 160 of about 2,463,485 (172)

Plasma models of the topside ionosphere and electrostatic wave propagation

Journal of Plasma Physics, 1971
The circumstances under which certain plasma dispersion equations may be used in electrostatic ray tracing problems connected with studies of ionospheric topside plasma resonances are investigated. Three plasma ‘models’ of increasing complexity are compared with each other.
M. T. C. Fang, M. K. Andrews
openaire   +1 more source

Neural network model of Electron density in the Topside ionosphere (NET)

2023
The ionosphere is an ionized part of the upper atmosphere, where the number of electrons in is large enough to affect the propagation of electromagnetic signals, including those of the GNSS systems. Therefore, knowing electron density values in the ionosphere is crucial for both industrial and scientific applications.
Artem Smirnov, Yuri Shprits, Hermann Lühr, Fabricio Prol, Chao Xiong   +4 more
openaire   +1 more source

Neural network model of Electron density in the Topside ionosphere (NET)

2022
<p>The ionosphere is an ionized part of the upper atmosphere, where the number of electrons in is large enough to affect the propagation of electromagnetic signals, including those of the GNSS systems. Therefore, knowing electron density values in the ionosphere is crucial for both industrial and scientific applications.
Artem Smirnov, Yuri Shprits, Fabricio Prol, Hermann Lühr, Max Berrendorf, Irina Zhelavskaya, Chao Xiong   +6 more
openaire   +1 more source

EISCAT data base for ionospheric modelling: F-region and topside ionosphere

Advances in Space Research, 1995
Abstract The EISCAT incoherent scatter radar system has now been providing long-term observations of the highlatitude ionosphere for more than a decade. Regular observations of F-region electron density, electron temperature, ion temperature and ion drift with the UHF radar began in 1981.
openaire   +1 more source

Generalized fluid model of plasma outflow processes in the topside ionosphere

Advances in Space Research, 1988
Abstract The classical and anomalous transport properties of a multifluid plasma are investigated in the presence of auroral field aligned return currents, using a multimoment fluid model with anomalous transport coefficients. This approach offers the possibility of simulating large scale dynamic phenomena without neglecting the important macroscopic
Supriya B. Ganguli, Peter J. Palmadesso
openaire   +1 more source

Statistical Models of Ionospheric Variability and Irregularities in the Topside Ionosphere

The Earth’s ionosphere can be driven by the Sun, the solar wind, the magnetosphere, as well as the neutral atmosphere. These drivers influence the ionosphere on a variety of spatial and temporal scales. The ionosphere is highly dependent on the driving processes and is highly dynamic.
Alan Wood, Daria Kotova, Eelco Doornbos, Jaroslav Urbář, Luca Spogli, Yaqi Jin, Lucilla Alfonsi, Gareth Dorrian, Mainul Hoque, Kasper van Dam, Wojciech Miloch   +10 more
openaire   +1 more source

Empirical modeling of ion composition in the middle and topside ionosphere

Advances in Space Research, 1990
The paper reviews the efforts to represent the global and temporal variations of the ionospheric ion composition in the altitude range from 100 km to 1000 km. The ground and space data sets that have been collected for the ion densities over the past decades are listed.
openaire   +1 more source

Evaluation and correction of the IRI2016 topside ionospheric electron density model

Advances in Space Research, 2016
Abstract The international reference ionosphere (IRI) is the internationally recommended empirical model. The IRI2016 is now the latest version, and it includes three options for the prediction of topside electron density profiles: IRI2001, a correction of IRI2001 (IRI2001corr), and NeQuick model.
Sicheng Wang, Sixun Huang, Hanxian Fang, Yu Wang   +3 more
openaire   +1 more source

Topside ionosphere and plasmasphere: Use of NeQuick in connection with Gallagher plasmasphere model

Advances in Space Research, 2007
Abstract The NeQuick ionospheric electron density model has a very simple topside formulation, which allows taking into account the electron content up to 20,000 km. In the present work, the Gallagher model has been used in connection with NeQuick to provide a more realistic representation of the electron concentration distribution in the ...
M. Cueto, P. Coïsson, S.M. Radicella, M. Herraiz, L. Ciraolo, C. Brunini   +5 more
openaire   +1 more source

Empirical Orthogonal Function Analysis and Modeling of the Topside Ionospheric and Plasmaspheric TECs

Journal of Geophysical Research: Space Physics, 2019
AbstractThe topside total electron contents (TECs) observed by the MetOp‐A (above 832 km) and TerraSAR‐X (above 520 km) satellites for multiple local times during 2008–2018 have been used to develop global topside ionospheric and plasmaspheric TEC models, based on empirical orthogonal function (EOF) analysis.
Jiahao Zhong, Jiuhou Lei, Xinan Yue, Wenbin Wang, Alan G. Burns, Xiaoli Luan, Xiankang Dou   +6 more
openaire   +1 more source