Results 71 to 80 of about 5,979 (206)
Spatial and temporal variations of small-scale plasma turbulence parameters in the equatorial electrojet: HF and VHF radar observational results [PDF]
Annales Geophysicae, 2005 The spatial and temporal variations of various parameters associated with plasma wave turbulence in the equatorial electrojet (EEJ) at the magnetic equatorial location of Trivandrum (8.5° N, 77° E; dip 0.5° N) are studied for the first ...
G. Manju +2 more
doaj +1 more source
, 2021 The equatorial electrojet (EEJ) represents a ribbon of intense electric current flowing in the ionospheric E region on the dayside along the dip-equator. The primary reason for the high current density is the geometry of the geomagnetic field with its horizontal field lines at these latitudes.
Lühr, H., Alken, P., Zhou, Y.
openaire +2 more sources
Global MHD Simulations: Magnetosphere–Ionosphere Coupling Dependence on Conductance Model
Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.Abstract Eighty‐five geomagnetic storms were simulated with the space weather modeling framework Geospace model using two different ionospheric conductance models. One set used the legacy conductances within the Ridley ionosphere model, while the other set used the newly developed conductance model for extreme events conductance model.
T. I. Pulkkinen +9 more
wiley +1 more source
Polarization of the auroral electrojet [PDF]
Journal of Geophysical Research, 1972 Consideration of an idealized model of electrojet polarization. Precipitation from the inner edge of the electron plasma sheet creates a density maximum in the auroral-oval ionosphere, which in turn leads to Hall and Pedersen conductance maximums. It is then assumed that a uniform westward convection electric field is imposed on the lower ionosphere ...
F. V. Coroniti, C. F. Kennel
openaire +1 more source
Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.Abstract The Geospace Dynamics Constellation (GDC) mission aims to investigate the dynamic coupling between the magnetosphere, ionosphere, and thermosphere by resolving key spatiotemporal processes at scales ranging from local to global. A key aspect is GDC's ability to reconstruct hemispheric‐scale high‐latitude electrodynamics with comprehensive ...
J. S. Shim +6 more
wiley +1 more source
Topside Ionization and Effect on Altitudinal Evolution of Nocturnal Ionospheric Irregularities
Space Weather, Volume 24, Issue 1, January 2026.Abstract Topside ionospheric electron density (Ne) and its control on the variabilities in nocturnal ionospheric irregularities is examined globally using electron density measurements from COSMIC‐2 and Swarm satellite, along with the Swarm satellite‐based Ionospheric Plasma Irregularity (IPIR) index for low and high solar activity (LSA and HSA ...
T. V. Sruthi, G. Manju
wiley +1 more source
Rocket observations of electron-density irregularities in the equatorial ionosphere below 200 km [PDF]
Nike Apache rockets carring instrumentation to measure electron density and its fine structure in the equatorial ionosphere were launched from Chilca, Peru in May and June 1975.
Klaus, D. E., Smith, L. G.
core +1 more source
Initial POLAR MFE observation of substorm signatures in the polar magnetosphere [PDF]
, 1997 This paper studies substorm influences in the polar magnetosphere using data from the POLAR magnetic field experiment (MFE). The POLAR spacecraft remains in the high altitude polar magnetosphere for extended periods around apogee.
Kawano, H. +5 more
core +2 more sources
Space Weather, Volume 24, Issue 1, January 2026.Abstract Using data from a cluster of ground‐based global navigation satellite system, we observed spatially extended enhanced ROTI over the European longitudes during a weak geomagnetic storm (Dst ≈ ${\approx} $ −50 nT) on 4 November 2023. The enhanced ROTI is extended over an extensive geographical latitudinal range of 46°N.
Chandan Kapil +4 more
wiley +1 more source
Space Weather, Volume 24, Issue 1, January 2026.Abstract We employed zonal wind data from Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics Doppler Interferometer, equatorial electrojet (EEJ) measurements from Jicamarca (12°S, 77°W), and global ionospheric total electron content (TEC) maps to investigate the effects of ultra‐fast Kelvin waves (UFKW) with zonal wavenumbers 2 and 3 ...
Ruidi Sun +6 more
wiley +1 more source