Plasmasphere electron temperature model based on Akebono data

I. Kutiev, Oyama Koichiro, T. Abe, P. Marinov

研究成果: Article

4 引文 斯高帕斯(Scopus)

摘要

Average electron temperature (T e ) distribution in altitude range 1000-10,000 km and in geomagnetic latitude range ± 70° are used to construct a simple analytical model of T e . T e distribution is considered constant during daytime (9-16 h) and nighttime (22-04 h) local time sectors. Transition between the constant thermal states is described by cubic splines. The vertical T e profiles at fixed geomagnetic latitudes are approximated by second order polynomials and then the three constants of these polynomials are approximated by another set of analytical expressions, being explicit functions of altitude, geomagnetic latitude and local time. No seasonal variation or hemispheric asymmetry is considered in the model. The average T e distributions at L shells greater than three were reconstructed, in order to avoid the unrealistically high temperatures measured in the regions with low plasma density. For this purpose, T e distributions above 3000 km along the L shells were calculated, taking the gradients obtained at L = 2 (0.3 K/km during the day and 0.1 K/km during the night), reduced with latitudes as 1/(L-1). The accuracy and limitations of the model are discussed.

原文English
頁(從 - 到)975-979
頁數5
期刊Advances in Space Research
33
發行號6
DOIs
出版狀態Published - 2004 一月 1

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science

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