How Does the Magnetosphere‐Ionosphere Current System Respond to Solar Flares?
Geophysical Research LettersWhile the isolated effects of solar flares on low‐latitude ionospheric electrodynamics have been well documented, the coupled system response of the equatorial electrojet (EEJ), auroral electrojet (AEJ), field‐aligned currents (FACs), and asymmetric ring
Hongkai Tang +5 more
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On the height variation of the E-region cowling conductivity – effect of charged dust particles [PDF]
Annales Geophysicae, 2006 Height profiles of the Cowling conductivity in the electrojet region, estimated using the atmospheric parameters given by the existing models like CIRA or MSIS and measured electron density profiles, consistently show the heights of the electrojet ...
P. Muralikrishna, V. H. Kulkarni
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Electrojet Estimates From Mesospheric Magnetic Field Measurements [PDF]
Journal of Geophysical Research: Space Physics, 2021 Abstract The auroral electrojet is traditionally measured remotely with magnetometers on ground or in low Earth orbit (LEO). The sparse distribution of measurements, combined with a vertical distance of some 100 km to ground and typically >300 km to LEO satellites, means that smaller scale sizes can't be detected.
K. M. Laundal +8 more
openaire +5 more sources
Substorm behavior of the auroral electrojet indices [PDF]
Annales Geophysicae, 2004 The behavior of the auroral electrojet indices AU and AL during classical substorms is investigated by the use of global auroral images. A superposition of the 12 AE stations onto global auroral images and identification of the AL and AU contributing ...
J. W. Gjerloev +4 more
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Effects of solar wind density on auroral electrojets and brightness under influence of substorms [PDF]
Annales Geophysicae, 2009 Using the auroral electrojet indices and Polar Ultraviolet Imager auroral images, we examined two fortuitous events during which the solar wind density had clear enhancements while the other solar wind parameters were relatively constant.
J.-H. Shue, Y. Kamide, J. W. Gjerloev
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Electrodynamics of an omega-band as deduced from optical and magnetometer data [PDF]
, 2009 We investigate an omega-band event that took place above northern Scandinavia around 02:00–02:30 UT on 9 March 1999. In our analysis we use ground based magnetometer, optical and riometer measurements together with satellite based optical images.
Amm, O. +5 more
core +7 more sources
Evidence and effects of a wave-driven nonlinear current in the equatorial electrojet [PDF]
Annales Geophysicae, 1997 Ionospheric two-stream waves and gradient-drift waves nonlinearly drive a large-scale (D.C.) current in the E-region ionosphere. This current flows parallel to, and with a comparable magnitude to, the fundamental Pedersen current.
M. Oppenheim
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Asymmetries in the equatorial electrojet around N-E Brazil sector [PDF]
Annales Geophysicae, 2009 The paper examines the data of geographic northward (X), eastward (Y) and vertical (Z) components of the magnetic field from a dense array of 26 vector magnetometers operated in N-NE Brazil from November 1990 to March 1991.
R. G. Rastogi, N. B. Trivedi
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Simulations of secondary Farley-Buneman instability driven by a kilometer-scale primary wave: anomalous transport and formation of flat-topped electric fields [PDF]
, 2019 Since the 1950s, high frequency and very high frequency radars near the magnetic equator have frequently detected strong echoes caused ultimately by the Farley‐Buneman instability (FBI) and the gradient drift instability (GDI).
Dimant Y. S. +4 more
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Generation of electric fields and currents by neutral flows in weakly ionized plasmas through collisional dynamos [PDF]
, 2016 In weakly ionized plasmas neutral flows drag plasma across magnetic field lines generating intense electric fields and currents. An example occurs in the Earth's ionosphere near the geomagnetic equator.
Dimant, Y.S. +2 more
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