Buscar
Mostrando ítems 11-20 de 80
First detection of the supersonic upward plasma flow structures in the early morning sector
(American Geophysical Union, 2015-11-04)
We present the first observations of the supersonic updrafting plasma drifts in the predawn sector. Two DMSP satellites quasi‐simultaneously detected two fast‐speed events: one of ~385 km spatial extension and with the ...
Comparative analysis of nocturnal vertical plasma drift velocities inferred from ground-based ionosonde measurements of hmF2 and h′F
(Elsevier, 2014-11-22)
Variations in the evening/nighttime ionosonde vertical plasma drift velocities inferred from the time rate of change of both the base of the F-layer height (Vz(h′F)) and height of the peak electron density (Vz(hmF2)) from ...
Radar Observations of Equatorial Ionospheric Irregularities
(International Science Congress Association, 2015-10-24)
Long-term data set of radar observations using coherent and incoherent scatter radar sources during 1996-2008 were used to study the trend of low-latitude ionospheric irregularities, also referred to as equatorial spread ...
Equatorial F region vertical plasma drifts during solar maxima
(American Geophysical Union, 1989-09-01)
Incoherent scatter radar measurements at Jicamarca are used to study the effects of large solar fluxes and magnetic activity on the F region vertical plasma drifts. The average drifts from the two last solar maxima are ...
A dedicated setup for the measurement of the electron transport parameters in gases at large electric fields
(ELSEVIER SCIENCE BV, 2010)
Electron transport parameters are important in several areas ranging from particle detectors to plasma-assisted processing reactors. Nevertheless, especially at high fields strengths and for complex gases, relatively few ...
Effect of magnetic activity on the dynamics of equatorial F region irregularities
(American Geophysical Union, 2002)
Two different aspects of the effect of magnetic activity on the dynamics of equatorial spread F (ESF) irregularities are studied here using spaced receiver scintillation observations. The first one deals with the question ...
Assimilative modeling of the equatorial ionosphere for scintillation forecasting: modeling with vertical drifts
(American Geophysical Union, 2005-11-19)
Knowledge of the vertical plasma drift velocity observed by the Jicamarca incoherent radar in seven events is assimilated into a theoretical model for the ambient F region plasma density. Comparisons of the calculated ...
Abnormal evening vertical plasma drift and effects on ESF and EIA over Brazil-South Atlantic sector during the 30 October 2003 superstorm
(American Geophysical Union, 2008-11)
Equatorial F region vertical plasma drifts, spread F and anomaly responses, in the south American longitude sector during the superstorm of 30 October 2003, are analyzed using data from an array of instruments consisting ...
Simulation of the pre‐reversal enhancement in the low latitude vertical ion drifts
(American Geophysical Union, 2000-07-01)
Low latitude F region ion motions exhibit strong seasonal and solar cycle dependences. The pre‐reversal enhancement (PRE) in the vertical ion drifts is a particularly well‐known low latitude electrodynamic feature, exhibited ...
The “zebra stripes”: An effect of F region zonal plasma drifts on the longitudinal distribution of radiation belt particles
(American Geophysical Union, 2016-01-09)
We examine a characteristic effect, namely, the ubiquitous appearance of structured peaks and valleys called zebra stripes in the spectrograms of energetic electrons and ions trapped in the inner belt below L ~ 3. We propose ...