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
core +1 more source
The response of ionospheric convection in the polar cap to substorm activity [PDF]
Annales Geophysicae, 1995 We report multi-instrument observations during an isolated substorm on 17 October 1989. The EISCAT radar operated in the SP-UK-POLI mode measuring ionospheric convection at latitudes 71°λ-78°λ.
M. Lester +6 more
doaj +1 more source
Effects of solar wind magnetosphere coupling recorded at different geomagnetic latitudes: Separation of directly-driven and storage/release systems [PDF]
, 2008 The effect on geomagnetic activity of solar wind speed, compared with that of the strength of the interplanetary magnetic field, differs with geomagnetic latitude.
A. P. Rouillard +22 more
core +1 more source
The field of the equatorial electrojet from CHAMP data [PDF]
Annales Geophysicae, 2006 We apply a simple linear transform, the along-track second derivative, to four years of scalar and vectorial data from the CHAMP satellite. This transform, reminiscent of techniques used in the interpretation of aeromagnetic surveys, is applied either
J.-L. Le Mouël +2 more
doaj +1 more source
About the relationship between auroral electrojets and ring currents [PDF]
Annales Geophysicae, 2000 The relationship between the storm-time ring current and the auroral electrojets is investigated using IMAGE magnetometer data, DSt and H-SYM, and solar wind data. Statistical results as well as the investigation of single events show that the auroral
A. Grafe +3 more
doaj +1 more source
A model equatorial electrojet [PDF]
Journal of Geophysical Research, 1966 Cross-sectional profile determination of equatorial electrojet for various longitudes along dip equator using set of Gauss coefficients for earth's magnetic ...
Masahisa Sugiura, Joseph C. Cain
openaire +1 more source
Observations of equatorial ionization anomaly over Africa and Middle East during a year of deep minimum [PDF]
Annales Geophysicae, 2017 In this work, we investigated the veracity of an ion continuity equation in controlling equatorial ionization anomaly (EIA) morphology using total electron content (TEC) of 22 GPS receivers and three ground-based magnetometers (Magnetic Data ...
O. Bolaji +13 more
doaj +1 more source
Effects of electrojet turbulence on a magnetosphere-ionosphere simulation of a geomagnetic storm [PDF]
, 2017 Ionospheric conductance plays an important role in regulating the response of the magnetosphere‐ionosphere system to solar wind driving. Typically, models of magnetosphere‐ionosphere coupling include changes to ionospheric conductance driven by extreme ...
Dimant, Y. +10 more
core +1 more source
Auroral electrojets during geomagnetic storms [PDF]
Journal of Geophysical Research: Space Physics, 1997 On the basis of digital magnetometers from the International monitor auroral geomagnetic effects (IMAGE) and European incoherent scatter (EISCAT) meridional chains in Scandinavia dynamics of the eastward and westward electrojets during the main phase of magnetic storms are considered.
Y. I. Feldstein +3 more
openaire +1 more source
Meridional motions of the afternoon radar aurora, auroral electrojets, and absorption patches under variable IMF conditions [PDF]
Annales Geophysicae, 2004 The meridional motions of the CUTLASS HF and STARE VHF coherent echoes, IMAGE equivalent electrojet currents, and IRIS absorption patches during the postnoon/early-evening event of 14 February 2000 are presented.
R. A. Makarevitch +4 more
doaj +1 more source