Results 21 to 30 of about 320,647 (167)
Long-term evolution of magnetospheric current systems during storms [PDF]
Annales Geophysicae, 2004 We present a method to model the storm-time magnetospheric magnetic field using representations of the magnetic field arising from the various magnetospheric current systems.
N. Yu. Ganushkina +4 more
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Models of field-aligned currents needful to simulate the substorm variations of the electric field and other parameters observed by EISCAT [PDF]
Annales Geophysicae, 1996 We have used the global numerical model of the coupled ionosphere-thermosphere-protonosphere system to simulate the electric-field, ion- and electron-temperature and -concentration variations observed by EISCAT during the substorm event of 25 March ...
M. A. Volkov +2 more
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Frontiers in Astronomy and Space Sciences, 2022 Large-scale current systems in the ionosphere and the magnetosphere are intimately controlled by the solar wind-magnetosphere interaction and the magnetosphere-ionosphere coupling.
Guan Le +14 more
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On the role of neutral flow in field-aligned currents [PDF]
Annales Geophysicae, 2018 In this brief note we explore the role of the neutral atmosphere in magnetosphere–ionosphere coupling. We analyze momentum balance in the ion rest frame to form hypotheses regarding the role of neutral momentum in the lower ionosphere during ...
A. J. Mannucci +4 more
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Coordinated ground-based and Cluster observations of large amplitude global magnetospheric oscillations during a fast solar wind speed interval [PDF]
, 2002 We present magnetospheric observations of very large amplitude global scale ULF waves, from 9 and 10 December 2000 when the upstream solar wind speed exceeded 600 km/s.
Viljanen, A. +12 more
core +6 more sources
Modeling of ion dynamics in the inner geospace during enhanced magnetospheric activity [PDF]
Annales Geophysicae, 2016 We investigate the effect of magnetic disturbances on the ring current buildup and the dynamics of the current systems in the inner geospace by means of numerical simulations of ion orbits during enhanced magnetospheric activity.
C. Tsironis +4 more
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Space Weather, 2021 Using magnetic field observations from Van Allen Probe‐A (VAP‐A), we evaluated the performances of 13 widely used external magnetic field models in the Earth's outer radiation belt region in detail.
Xiaochao Yang, Li Wang
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3-D force-balanced magnetospheric configurations [PDF]
Annales Geophysicae, 2004 The knowledge of plasma pressure is essential for many physics applications in the magnetosphere, such as computing magnetospheric currents and deriving mag-netosphere-ionosphere coupling.
S. Zaharia +3 more
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The Shape of Strongly Disturbed Dayside Magnetopause
Terrestrial, Atmospheric and Oceanic Sciences, 2013 During strong geomagnetic disturbances, the Earth¡¦s magnetosphere exhibits unusual and nonlinear interaction with the incident flow of magnetized solar wind plasma. Global Magneto-hydro-dynamic (MHD) modeling of the magnetosphere predicts that the storm-
Alexei V. Dmitriev Alla V. Suvorova
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Auroral vortex street formed by the magnetosphere–ionosphere coupling instability [PDF]
Annales Geophysicae, 2015 By performing three-dimensional magnetohydrodynamic simulations including Alfvén eigenmode perturbations most unstable to the ionospheric feedback effects, we examined the auroral vortex street that often appears just before substorm onset.
Y. Hiraki
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