Space Weather, 2021 Previously, Tsurutani and Lakhina (2014, https://doi.org/10.1002/2013GL058825) created estimates for a “perfect” interplanetary coronal mass ejection and performed simple calculations for the response of geospace, including dB/dt.
Daniel T. Welling +5 more
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Plasma flow channels at the dawn/dusk polar cap boundaries: momentum transfer on old open field lines and the roles of IMF By and conductivity gradients [PDF]
Annales Geophysicae, 2009 Using DMSP F13 data in conjunction with IMF data we investigate the newly discovered channels of enhanced (1.5–3 km/s) antisunward convection occurring at the dawn (06:00–09:00 MLT) or dusk (15:00–18:00 MLT) flanks of the polar cap for different ...
P. E. Sandholt, C. J. Farrugia
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Investigation of energy transport and thermospheric upwelling during quiet magnetospheric and ionospheric conditions from the studies of low- and middle-altitude cusp [PDF]
Annales Geophysicae, 2015 We investigate energy fluxes and small, kilometre-scale Birkeland currents in the magnetospheric cusp at a 1–3 Earth radii altitude and in the ionosphere using satellites when they were, according to the Tsyganenko model, in magnetic conjunction ...
T. Živković +5 more
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Electrodynamic context of magnetopause dynamics observed by magnetospheric multiscale
Geophysical Research Letters, 2016 Magnetopause observations by Magnetospheric Multiscale (MMS) and Birkeland currents observed by the Active Magnetosphere and Planetary Electrodynamics Response Experiment are used to relate magnetopause encounters to ionospheric electrodynamics.
Brian J. Anderson +18 more
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Contribution of Birkeland Currents to the Earth’s distant magnetic field
Geofísica Internacional, 1992 Las Corrientes de Birkeland son corrientes eléctricas en forma de hojas que fluyen hacia adentro y hacia afuera de la zona auroral; su circuito parece estar cerrado lejos de la tierra ya sea por corrientes cercanas al ecuador en el lado noche 0 por ...
M. Peredo, D. P. Stern
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Birkeland currents in the plasma sheet [PDF]
Journal of Geophysical Research: Space Physics, 2003 Geotail particle and magnetic field measurements were combined to generate long‐term‐averaged 3‐D models of the plasma sheet. Ampere's law was used to calculate the Birkeland current j∥ in the −30 < x < −16RE, ∣z∣ > 1RE region. Current diversion, or the growth of current in a unit flux tube j∥/B, took place throughout the region studied.
Richard L. Kaufmann +2 more
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Polar cap flow channel events: spontaneous and driven responses [PDF]
Annales Geophysicae, 2010 We present two case studies of specific flow channel events appearing at the dusk and/or dawn polar cap boundary during passage at Earth of interplanetary (IP) coronal mass ejections (ICMEs) on 10 January and 25 July 2004.
P. E. Sandholt +2 more
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Determination of vertical profiles of shell currents in the ionosphere [PDF]
Annales GeophysicaeIn previous works, we found Euler potentials for the combined magnetic field of Earth's dipole, field-aligned currents, ring current, and the magnetopause surface currents (represented by Dungey's term) in the magnetosphere.
E. Romashets, M. Vandas
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Space Weather, 2023 During intense geomagnetic storms, the magnetopause can move in as far as geosynchronous orbit, leaving the satellites in that orbit out in the magnetosheath.
Pauline M. Dredger +4 more
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Extended period of polar cap auroral display: auroral dynamics and relation to the IMF and the ionospheric convection [PDF]
Annales Geophysicae, 1995 An unusually extended period (5 h) of polar cap auroral display on 3 August 1986 is examined. Auroras have been investigated using ground-based data as well as measurements from the IMP-8 spacecraft in interplanetary space and simultaneous ...
V. G. Vorobjev +2 more
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