Results 81 to 90 of about 34,498 (251)
Journal of Geophysical Research: Space Physics, Volume 130, Issue 7, July 2025.Abstract Internally driven ULF waves are excited in the premidnight region during the magnetic storm on 22 July 2009. The excitation of ULF waves was investigated based on the Geospace Environment Modeling System for Integrated Studies (GEMSIS) magnetosphere‐ionosphere coupled model, GOES spacecrafts, and ground magnetometers.
Tomotsugu Yamakawa +4 more
wiley +1 more source
Large-scale properties of the interplanetary magnetic field [PDF]
Early theoretical work of Parker is presented along with the observational evidence supporting his Archimedes spiral model. Variations present in the interplanetary magnetic field from the spiral angle are related to structures in the solar wind.
Schatten, K. H.
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Geophysical Research Letters, 2016 Using the Van Allen Probe in situ measured magnetic field and electron data, we examine the solar wind dynamic pressure and interplanetary magnetic field (IMF) effects on global magnetic field and outer radiation belt relativistic electrons (≥1.8 MeV ...
J. Yu +5 more
doaj +1 more source
Modeling the Time‐Variability of the Ionospheric Electric Potential (TiVIE)
Space Weather, Volume 23, Issue 7, July 2025.Abstract We present a statistical model of the ionospheric electric potential derived from line‐of‐sight plasma velocity measurements from the Super Dual Auroral Radar Network. Electric potential patterns are produced using an established technique that models the ionospheric electric potential as a spherical harmonic expansion.
M.‐T. Walach, A. Grocott
wiley +1 more source
E3S Web of Conferences, 2018 The dynamics of geomagnetic field variations on the eve and during the periods of magnetic storms of 2015 and 2017 has been studied (data of the horizontal component of the Earth’s magnetic field of the terrestrial station network were used).
Mandrikova Oksana +2 more
doaj +1 more source
Space Weather, Volume 23, Issue 7, July 2025.Abstract In this study, we introduce observing system simulation experiments (OSSE) and observing system experiments (OSE) to reconstruct the near‐Earth radiation environment. This study investigates the impact of satellite measurements on different orbits and the number of spacecraft measuring the particle fluxes on the reconstruction of the radiation
Yuri Y. Shprits +4 more
wiley +1 more source
The electromagnetic structure of interplanetary space [PDF]
A method to calculate the three-dimensional structure of the interplanetary magnetic field is presented. The integrations are based on magnetograph recordings of longitudinal magnetic fields in the solar photosphere. The program by Altschuler and Newkirk
Stenflo, J. O.
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Earth and Space Science, Volume 12, Issue 7, July 2025.Abstract Observations of solar energetic particles (SEPs) accelerated at collisionless shocks driven by coronal mass ejections (CMEs) highlight the importance of understanding proton transport in velocity space. In this study, we present an ensemble model based on the one‐dimensional Fokker–Planck equation to estimate proton flux from CME‐driven shocks
Ji‐Hoon Ha +5 more
wiley +1 more source
The interplanetary magnetic field [PDF]
Large-scale properties of the interplanetary magnetic field as determined by the solar wind velocity structure are examined. The various ways in which magnetic fields affect phenomena in the solar wind are summarized.
Davis, L., Jr.
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Dependence of the High Latitude Middle Atmosphere Ionization on Structures in Interplanetary Space [PDF]
, 1984 The precipitation of high energetic electrons during and after strong geomagnetic storms into heights below 100 km in middle and subauroral latitudes is markedly modulated by the structure of the interplanetary magnetic field (IMF).
Bremer, J., Lauter, E. A.
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