Results 41 to 50 of about 1,563 (166)
Atmospheric Tides Imprint a Wavenumber‐4 Structure in Topside Ionospheric ELF Wave Intensity
Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract Atmospheric tides produce a well known pronounced longitudinal wavenumber‐4 (WN‐4) structure in the ionosphere, but their influence on electromagnetic‐wave propagation through the ionosphere remains poorly constrained. Here we use DEMETER satellite measurements to show that the extremely low frequency (ELF) electric field in the low‐latitude ...
Li Liao +4 more
wiley +1 more source
Remote Sensing, 2022 The recent Chinese Seismo-Electromagnetic Satellite (CSES-01) provides a good opportunity to investigate some features of plasma properties and its motion in the topside ionosphere. Using simultaneous measurements from the electric field detector and the
Giuseppe Consolini +6 more
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.Abstract The observations from GRACE‐FO and DMSP satellites are utilized to analyze the ion‐neutral interaction near dusk during the 10–12 May 2024 super‐storm. The horizontal plasma convection dragged the anti‐sunward wind in the polar cap and sunward winds around the auroral and subauroral regions during whole storm times.
Ruilong Zhang +6 more
wiley +1 more source
Localized structure in the cusp and high-latitude ionosphere: a modelling study [PDF]
Annales Geophysicae, 1999 The ionospheric signature of a flux transfer event (FTE) seen in EISCAT radar data has been used as the basis for a modelling study using a new numerical model of the high-latitude ionosphere developed at the University of Sheffield, UK. The evolution
H. F. Balmforth +2 more
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.Abstract Ground‐based very low frequency transmitters emit signals that primarily propagate within the Earth–ionosphere waveguide, and some of their energy can propagate into the magnetosphere. Ionospheric observations from the DEMETER satellite reveal a distinct concentric rings pattern of the wave power distribution of the North West Cape transmitter
Zhiyang Xia +8 more
wiley +1 more source
Modeling the topside ionosphere by means of electron density values as recorded by the Swarm constellation [PDF]
, 2017 The topside part of the ionosphere lies above the ionospheric F2 layer peak and extends up to the plasmasphere. Since it contains a considerable part of the ionospheric plasma, its modeling is important for telecommunication’s purposes.
Rolando Rizzi +2 more
core
Ionospheric topside models compared with experimental electron density profiles
Annals of Geophysics, 2005 Recently an increasing number of topside electron density profiles has been made available to the scientific community on the Internet. These data are important for ionospheric modeling purposes, since the experimental information on the ...
S. M. Radicella, P. Coïsson
doaj +1 more source
Space Weather, 2022 Modeling the Earth's ionosphere is a critical component of forecasting space weather, which in turn impacts radio wave propagation, navigation and communication.
S. Dutta, M. B. Cohen
doaj +1 more source
AGU Advances, Volume 7, Issue 3, June 2026.Abstract Strong Thermal Emission Velocity Enhancement (STEVE) is a nightsky optical phenomenon of great research interest in recent years. STEVE is recognized to be co‐located with a latitudinally narrow channel of fast westward ion drifts, also known as “subauroral ion drifts” (SAID).
Jun Liang +7 more
wiley +1 more source
Topside Electron Density Modeling Using Neural Network and Empirical Model Predictions
Space Weather, 2023 We model the electron density in the topside of the ionosphere with an improved machine learning (ML) model and compare it to existing empirical models, specifically the International Reference Ionosphere (IRI) and the Empirical‐Canadian High Arctic ...
S. Dutta, M. B. Cohen
doaj +1 more source