文章基本信息

标题：A Dynamic Fluid-Kinetic(DyFK) Model for Ionosphere-Magnetosphere Plasma Transport: Effects of Ionization and Thermal Electron Heating by Soft Electron Precipitation
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作者：Garry M. Estep ; James L. Horwitz ; Yi-Jiun Su 等
期刊名称：Terrestrial Atmospheric and Oceanic Sciences
印刷版ISSN：1017-0839
出版年度：1999
卷号：10
期号：3
页码：491-510
DOI：10.3319/TAO.1999.10.3.491(A)
出版社：Chinese Geoscience Union
摘要：In order to efficiently and self-consistently describe the transport of high-laitude ionospheric plasma into the magnetosphere, we have developed a Dynamic coupled Fluid-Kinetic (DyFK) model for describing plasma flow along a magnetic flux tube. The collision-dominated ionospheric plasma is treated with a low-speed fluid approach for altitudes between 120-1100km, while a generalized semikinetic approach is used for the topside and higher altitudes, starting at 800 km. This paper presents a description of the new DyFK model, along with illustrative results obtained from modeling the effects of soft (100 eV) auroral electron precipitation using the new model. The results demonstrate the accuracy and efficiency of the new DyFK model and illustrate how soft electron precipitation provides a mechanism to drive observed upflows of high-latitude ionospheric plasma along geo magnetic field lines.
关键词：Soft electron precipitation; Coupled model; Plasma outflow