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Driving Influences of the Doppler Flash Observed by SuperDARN HF Radars in Response to Solar Flares
(American Geophysical Union, 2022-06)
Sudden enhancement in high-frequency absorption is a well-known impact of solar flare-driven Short-Wave Fadeout (SWF). Less understood, is a perturbation of the radio wave frequency as it traverses the ionosphere in the ...
Spectacular low- and mid-latitude electrical fields and neutral winds during a superstorm
(Elsevier, 2010-03)
In November 2004, a major magnetic storm occurred, a lengthy portion of which was recorded by the Upper Atmospheric Radar Chain. On the 9th and 10th, the Jicamarca Radar detected the highest magnitude penetrating electric ...
Ordem e caos em plasmas magnetizados
([s.n.], 1999)
The November 2004 superstorm: Comparison of low-latitude TEC observations with LLIONS model results
(Elsevier, 2009-04-07)
We investigate the effects of penetration electric fields, meridional thermospheric neutral winds, and composition perturbation zones (CPZs) on the distribution of low-latitude plasma during the 7–11 November 2004 geomagnetic ...
GPS observation of continent‐size traveling TEC pulsations at the start of geomagnetic storms
(American Geophysical Union, 2014-08-11)
We report our experimental observation of continent‐size traveling plasma disturbances using GPS measurements of total electron content (TEC) over the North American sector. These plasma disturbances occurred at the beginning ...
Polar mesospheric summer echoes at 78°N, 16°E, 2008: First results of the refurbished sounding system (SOUSY) Svalbard radar
(American Geophysical Union, 2009-06-06)
This paper examines in detail the electrical coupling between the high-, middle-, and low-latitude ionospheres during January 17–19, 1984, using interplanetary and high-latitude magnetic field data together with F region ...
Efeitos de tempestades magnéticas em sinais de gps, em Natal, Brasil
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em FísicaFísica da Matéria Condensada; Astrofísica e Cosmologia; Física da Ionosfera, 2008-02-29)
Satellites signals present disturbances (scintillations), due to presence of irregularities in the ionospheric plasma. In the present work, we dedicate to the study of the attenuation of these scintillations that is, an ...
Disturbances at F2-region heights of equatorial anomaly during geomagnetic storms
(Elsevier, 2003-12)
Neutral gas composition and ionospheric measurements taken by the Dynamic Explorer 2 satellite at F2-region heights during two geomagnetic storms are used to analyze the role of some possible physical mechanisms responsible ...
Modelo empírico das componentes dos ventos neutros termosféricos no setor americano baseado em dados do satélite UARS-WINDII para períodos geomagneticamente calmos
(Universidade Federal do Rio Grande do NorteBrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM CIÊNCIAS CLIMÁTICAS, 2020-04-30)
Thermospheric Neutral Winds (TNW) play a crucial role in the dynamics of the ionosphere by
acting directly on the plasma drift. The TNW are the main maintenance mechanism of the nocturnal
ionosphere. In addition, the TNW ...