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地球等离子层极紫外波段辐射特性计算 被引量:5

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摘要 介绍了计算地球等离子体层He+密度分布的动态全球核心等离子体层模式(DGCPM),模拟了等离子体层结构特性和30.4nm辐射特性,与IMAGE卫星观测结果的对比分析表明:(1)等离子体层顶主要位于5.5RE以内,10min收缩或扩张的特征尺度约0.1RE;(2)等离子体层肩产生于行星际磁场南向偏转并从晨侧向正午方向旋转;(3)等离子体层尾在行星际磁场南向偏转时会向昏侧旋转并变窄.模拟得到从月球上观测时等离子体层位于5.5RE以内,对应月基极紫外相机视场角10.7°×10.7°;等离子体层30.4nm辐射强度为0.1~11.4Rayleigh;首次从侧面模拟出了等离子体层肩和尾结构,其空间变化尺度量级为0.1RE.以上计算结果为月基极紫外相机参数设计提供了重要理论依据.
出处 《中国科学(E辑)》 CSCD 北大核心 2010年第1期71-76,共6页 Science in China(Series E)
基金 国家自然科学基金项目(批准号:40774098,40774079,40890160) 国家高技术研究发展计划(“863”计划)(批准号:2007AA12Z314) 中国科学院知识创新工程领域前沿项目资助
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