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准稳态磁层晨-昏不对称性的模拟研究 被引量:1

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摘要 基于一个新的全球三维磁层模型, 系统地研究了地球磁层在准稳态情况下的近磁尾晨、昏侧磁鞘区位形及粒子密度、粒子尾向通量密度等的不对称性问题. 结果表明, 磁鞘厚度的晨-昏不对称性是行星际磁场螺旋线位形所造成的固有现象, 是晨-昏侧不同的激波条件产生的结果, 而晨-昏侧粒子密度与粒子通量密度的不对称性主要是晨-昏侧磁鞘厚度的不同所致, 受磁层顶磁重联的影响不显著. 还研究了日下点磁层顶等离子体“ 减压层” (PDL)对磁层晨-昏不对称性的影响, 认为其可使昏侧粒子总通量略高于晨侧.
出处 《科学通报》 EI CAS CSCD 北大核心 2005年第4期387-392,共6页 Chinese Science Bulletin
基金 国家自然科学基金(批准号:40390150)资助.
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