Results 1 to 10 of about 41,349 (201)
A novel neural network model of Earth’s topside ionosphere [PDF]
Scientific Reports, 2023 The Earth’s ionosphere affects the propagation of signals from the Global Navigation Satellite Systems (GNSS). Due to the non-uniform coverage of available observations and complicated dynamics of the region, developing accurate models of the ionosphere ...
Artem Smirnov +6 more
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The Analysis of the Topside Additional Layer of Martian Ionosphere Using MARSIS/Mars Express Data [PDF]
Journal of Astronomy and Space Sciences, 2012 In this study, the transient second or third layer on the topside of the Martian ionosphere were investigated with the most recently released Mars advanced radar for subsurface and ionospheric sounding/Mars Express data obtained from January 2010 to ...
Yongha Kim
exaly +3 more sources
Simulation of Transient Topside Layer in the Martian Ionosphere
Remote Sensing, 2023 Many Mars missions, e.g., Mariner, Viking, Mars Global Surveyor (MGS), Mars Express (MEX), and Mars Atmosphere and Volatile Evolution (MAVEN), have been launched to study the Martian atmosphere.
Chunhua Jiang, Rong Tian, Lehui Wei
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Combined model of topside ionosphere and plasmasphere derived from radio-occultation and Van Allen Probes data [PDF]
Scientific Reports, 2022 In the last years, electron density profile functions characterized by a linear dependence on the scale height showed good results when approximating the topside ionosphere. The performance above 800 km, however, is not yet well investigated.
Fabricio S. Prol +3 more
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Dissipation of field-aligned currents in the topside ionosphere. [PDF]
Sci Rep, 2022 AbstractField-aligned currents (FACs) are electric currents parallel to the geomagnetic field and connecting the Earth’s magnetosphere to the high-latitude ionosphere. Part of the energy injected into the ionosphere by FACs is converted into kinetic energy of the surrounding plasma.
Giannattasio F +6 more
europepmc +4 more sources
The Effects of Solar Wind Dynamic Pressure on the Structure of the Topside Ionosphere of Mars
Geophysical Research Letters, 2019 We use Mars Atmosphere and Volatile EvolutioN observations of the upstream solar wind, and Mars Express observations of ionospheric electron densities and magnetic fields, to study how the topside ionosphere (>320 km) of Mars is affected by variations in
Jasper Halekas +2 more
exaly +2 more sources
Enhanced variability in the topside ionosphere
Annals of Geophysics, 1995 Variability of total electron content (TEC) observed by the Faraday rotation method at Florence has been stud- ied with the same technique applied independently to the ionospheric parameters foF2 and M(3000)F2 of the ground-based vertical-incidence ...
P. Spalla, T. Gulyaeva
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Is there a hole in the topside, equatorial ionosphere?
Results in Physics, 2016 A paper in 2000 (Huba, 2000) found a depression in electron density in the topside ionosphere near the magnetic equator, based on the SAMI-2 physical ionospheric model.
D. Gallagher
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Frontiers in Earth Science, 2023 The post-midnight irregularities in equator and its adjcent regions, which have remained least explored so far, are investigated using the in situ electron density (Ne) measurements from 2019 to 2021 obtained by the China Seismo-Electromagnetic Satellite
Xiuying Wang +8 more
doaj +1 more source
A New Method for Retrieving Electron Density Profiles from the MARSIS Ionograms
Remote Sensing, 2022 The Martian ionosphere was actively detected by Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) aboard the Mars Express. The detected echo signal of the MARSIS at an epoch is presented as a function of frequency and time delay to form
Wendong Liu +9 more
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