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Electric fields in the equatorial ionosphere derived from CHAMP satellite magnetic field measurements
(Elsevier, 2009-03-09)
The day-time eastward equatorial electric field (EEF) in the E-region plays an important role in equatorial ionospheric dynamics. It is responsible for driving the equatorial electrojet (EEJ) current system, equatorial ...
Upwelling: a unit of disturbance in equatorial spread F
(SpringerOpen, 2015-04-23)
Plasma structure in the nighttime equatorial F layer, often referred to as equatorial spread F (ESF), is not uniformly distributed, either in time or in space. Observations indicate that ESF in the bottomside F layer takes ...
Collisional shear instability in the equatorial F region ionosphere
(American Geophysical Union, 2004-11-03)
A collisional shear instability in a magnetized plasma is described and evaluated. The instability is related to electrostatic Kelvin Helmholtz but operates in inhomogeneous plasmas in the collisional regime. Boundary value ...
Morphology of the postsunset vortex in the equatorial ionospheric plasma drift
(American Geophysical Union, 2014-12-09)
The postsunset vortex in the equatorial ionosphere exhibits clockwise plasma motions after sunset in longitude (time) and altitude coordinates when the equatorial ionosphere is viewed looking northward. We describe the ...
Swarm SCARF equatorial electric field inversion chain
(SpringerOpen, 2013-11-22)
The day-time eastward equatorial electric field (EEF) in the ionospheric E-region plays a crucial role in equatorial ionospheric dynamics. It is responsible for driving the equatorial electrojet (EEJ) current system, ...
Signatures of equatorial plasma bubbles in VHF satellite scintillations and equatorial ionograms
(American Geophysical Union, 2013-02-22)
Since their discovery in the 1970s, equatorial plasma bubbles (EPBs) have been invoked to explain the propagation of VHF signals on trans‐equatorial circuits at night, and blamed for highly detrimental scintillation of VHF ...
Equatorial zonal plasma drifts measured by the C/NOFS satellite during the 2008–2011 solar minimum
(American Geophysical Union, 2013-06-26)
We use the measurements by the Vector Electric Field Investigation (VEFI) on board the Communication/Navigation Outage Forecasting System (C/NOFS) satellite to study the local time and seasonal‐ and longitudinal‐dependent ...
Impact of sudden stratospheric warmings on equatorial ionization anomaly
(American Geophysical Union, 2010-10-07)
We investigate the ionospheric response to several stratospheric sudden warming events which occurred in Northern Hemisphere winters of 2008 and 2009 during solar minimum conditions. We use GPS total electron content data ...
Sources of variability in equatorial topside ionospheric and plasmaspheric temperatures
(Elsevier, 2013-01-17)
Jicamarca measurements of electron temperatures at high altitudes (500–1500 km) from the last solar minimum routinely show variations of hundreds of Kelvin from day-to-day. Possible sources of these variations are explored ...