Temperature and density variations in the dusk and dawn plasmasphere as observed by interball tail in 1999 – 2000

Котова, Г. А.; Безруких, В. В.; Веригин, М. И.; Lezhen, L. A.

doi:10.1016/s0273-1177(02)00458-1

Cited by 12 publications

(5 citation statements)

References 8 publications

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“…Contrary to the DE models with Maxwellian VDFs for which the temperatures of the electrons and ions are uniform, DE models with Lorentzian VDFs have temperatures increasing with altitudes. Positive temperature gradients were first observed in the plasmasphere by Comfort (1986Comfort ( , 1996 and confirmed by the observations in Kotova et al (2002) and Bezrukikh et al (2003).…”

Section: The Exospheric Equilibrium Density Distributionssupporting

confidence: 70%

Recent Progress in Physics-Based Models of the Plasmasphere

et al. 2009

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We describe recent progress in physics-based models of the plasmasphere using the fluid and the kinetic approaches. Global modeling of the dynamics and influence of the plasmasphere is presented. Results from global plasmasphere simulations are used to understand and quantify (i) the electric potential pattern and evolution during geomagnetic storms, and (ii) the influence of the plasmasphere on the excitation of electromagnetic ion cyclotron (EMIC) waves and precipitation of energetic ions in the inner magnetosphere. The interactions of the plasmasphere with the ionosphere and the other regions of the magnetosphere are pointed out. We show the results of simulations for the formation of the plasmapause and discuss the influence of plasmaspheric wind and of ultra low frequency (ULF) waves for transport of plasmaspheric material. Theoretical models used to describe the electric field and plasma distribution in the plasmasphere are presented. Model predictions are compared to recent CLUSTER and IMAGE observations, but also to results of earlier models and satellite observations.

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Section: The Exospheric Equilibrium Density Distributionssupporting

confidence: 70%

Recent Progress in Physics-Based Models of the Plasmasphere

et al. 2009

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“…On the nightside, plasmaspheric ions flow downward into the ionosphere, enhancing the nightside N m F 2 peak in the ionosphere [ Singh and Singh , ; Carpenter and Lemaire , ; Pavlov and Pavlova , ]. Collectively, the movement of the high‐energy ions from the ionosphere to the plasmasphere and then back to the ionosphere on the nightside agrees with temperature measurements of ions and electrons in these regions [ Kotova et al , ].…”

Section: Introductionmentioning

confidence: 70%

Postmidnight depletion of the high‐energy tail of the quiet plasmasphere

et al. 2015

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The Van Allen Probes Helium Oxygen Proton Electron (HOPE) instrument measures the high‐energy tail of the thermal plasmasphere allowing study of topside ionosphere and inner magnetosphere coupling. We statistically analyze a 22 month period of HOPE data, looking at quiet times with a Kp index of less than 3. We investigate the high‐energy range of the plasmasphere, which consists of ions at energies between 1 and 10 eV and contains approximately 5% of total plasmaspheric density. Both the fluxes and partial plasma densities over this energy range show H+ is depleted the most in the postmidnight sector (1–4 magnetic local time), followed by O+ and then He+. The relative depletion of each species across the postmidnight sector is not ordered by mass, which reveals ionospheric influence. We compare our results with keV energy electron data from HOPE and the Van Allen Probes Electric Fields and Waves instrument spacecraft potential to rule out spacecraft charging. Our conclusion is that the postmidnight ion disappearance is due to diurnal ionospheric temperature variation and charge exchange processes.

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“…Earlier the PL-48/ALPHA 3 data obtained by INTERBALL 1 were compared with DE-1/RIMS data (Kotova et al, 2002). Good agreement of these data confirmed the reliability of INTERBALL data.…”

Section: Sources Of Experimental Datamentioning

confidence: 60%