Results 21 to 30 of about 6,222 (212)
Space Weather, 2021 The temporal change in height of a specific electron density can be used as a proxy for vertical plasma drift (PVPD) at the magnetic equator. The use of PVPDs as a predictor of low‐latitude ionospheric scintillation during the subsequent evening has ...
L. D. Nugent, S. Elvidge, M. J. Angling
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Filamentary Alfvénic structures excited at the edges of equatorial plasma bubbles [PDF]
Annales Geophysicae, 2007 Recent observations performed by the French DEMETER satellite at altitudes of about 710 km suggest that the generation of equatorial plasma bubbles correlates with the presence of filamentary structures of field aligned currents carried by Alfvén ...
R. Pottelette +4 more
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Gravity wave seeding of equatorial plasma bubbles [PDF]
Journal of Geophysical Research: Space Physics, 1997 Some examples from the Atmosphere Explorer E data showing plasma bubble development from wavy ion density structures in the bottomside F layer are described. The wavy structures mostly had east–west wavelengths of 150–800 km; in one example it was about 3000 km.
Sardul Singh, F. S. Johnson, R. A. Power
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On the solar activity dependence of midnight equatorial plasma bubbles during June solstice periods
Earth and Planetary Physics, 2021 The occurrence of midnight Equatorial Plasma Bubbles (EPBs) during the June solstice period of the ascending phase of solar cycle 24, from 2010 to 2014, was studied using data from the 47 MHz Equatorial Atmosphere Radar (EAR) at Kototabang, Indonesia ...
K. K. Ajith +6 more
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Equatorial plasma bubbles and L-band scintillations in Africa during solar minimum [PDF]
Annales Geophysicae, 2012 We report on the longitudinal, local time and seasonal occurrence of equatorial plasma bubbles (EPBs) and L band (GPS) scintillations over equatorial Africa.
V. V. Paznukhov +17 more
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The measured motions inside equatorial plasma bubbles [PDF]
Journal of Geophysical Research: Space Physics, 1984 A preliminary study of the vertical and north‐south horizontal ion motions in plasma bubbles in the near‐equatorial ionosphere utilizing drift meter data from Atmosphere Explorer E is presented. High‐resolution data show that the vertical ion velocity in some bubbles increases approximately linearly with (No‐N)/N, where No is the background ion ...
W. B. Hanson, D. K. Bamgboye
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Standing Alfvén Waves Within Equatorial Plasma Bubbles
Geophysical Research Letters, 2022 AbstractPlasma depletions in the disturbed equatorial ionosphere are known to be associated with magnetic fluctuations and Alfvén waves. Here, using data from the Swarm B satellite's vector field magnetometer and electric fields instrument at an altitude of ∼500 km, we present evidence of standing Alfvén modes trapped within strong density depletions ...
Hossein Ghadjari +2 more
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Magnetic Field and Electron Density Scaling Properties in the Equatorial Plasma Bubbles
Remote Sensing, 2022 The ionospheric plasma density irregularities are known to play a role in the propagation of electromagnetic signals and to be one of the most important sources of disturbance for the Global Navigation Satellite System, being responsible for degradation ...
Paola De Michelis +7 more
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Occurrence of Equatorial Plasma Bubbles during Intense Magnetic Storms
International Journal of Geophysics, 2011 An important issue in low-latitude ionospheric space weather is how magnetic storms affect the generation of equatorial plasma bubbles. In this study, we present the measurements of the ion density and velocity in the evening equatorial ionosphere by the
Chao-Song Huang
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Propagation of gravity waves and spread F in the low-latitude ionosphere over Tucumán, Argentina, by continuous Doppler sounding: first results [PDF]
, 2014 Results of systematic analysis of propagation directions and horizontal velocities of gravity waves (GWs) and spread F structures in low-latitude ionosphere (magnetic inclination ~27°) in Tucumán region, Argentina, are presented.
Baše, J. +12 more
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