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磁壳参数L与磁暴Dst指数和行星际条件的关系
Alternative TitleRELATION BETWEEN MAGNETIC SHELLPARAMETER L,Dst AND IMF
曹晋滨; 燕春晓; 刘振兴; 周国成; 北京8701信箱
Department空间天气学国家重点实验室
Source Publication空间科学学报
2004
Volume24Issue:2Pages:89-95
ISSN0254-6124
Language中文
Keyword地球磁壳参数 磁场模型 磁暴ds 行星际磁场
Abstract用磁坐标L-∧以来描述地球近地空间粒子特性和卫星位置是近年来空间物理探测研究和数据分析中的一个新趋势.利用T96磁场模型计算了L值,并比较了在地球磁层剧烈活动期间和不同行星际条件下,用偶极子模型,国际参照磁场(IGRF)模型,和T96磁场模型这三种方式计算得到的地球表面L-∧以磁坐标之间的区别.在地磁纬度大于30°时偶极子近似和IGRF磁场模型计算得到的L值差别开始增大.在地磁纬度大于50°时,用IGRF磁场模型和T96磁场模型计算得到的L值差别开始增大.由于T96磁场模型引入了行星际磁场南北和东西分量,计算的L值包含了行星际条件的影响,并具有了随地方时变化的特性.本工作对于辐射带粒子动态模式的建市,以及正确理解卫星磁坐标位置等具有重要意义.
Other AbstractIt is a new trend to use the magnetic coordinate L-d. to describe space particle features and position of spacecraft. T96 model is used to calculate magnetic shell parameter, and the difference between L values calculated from bipolar model,IGRF and T96 were compared.The difference between L values calculated from bipolar model and IGRF, begin to increase when magnetic latitude is larger than 300.Also,the difference between L values calculated from IGRF and T96, begin to increase when magnetic latitude is larger than 500.The L values are therefore dependent on the IMF (interplanetary magnetic field) and have also the dependence of local time. This work is meaningful to radiation belt dynamic modeling and understanding of magnetic position of satellite.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1334
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
曹晋滨,燕春晓,刘振兴,等. 磁壳参数L与磁暴Dst指数和行星际条件的关系[J]. 空间科学学报,2004,24(2):89-95.
APA 曹晋滨,燕春晓,刘振兴,周国成,&北京8701信箱.(2004).磁壳参数L与磁暴Dst指数和行星际条件的关系.空间科学学报,24(2),89-95.
MLA 曹晋滨,et al."磁壳参数L与磁暴Dst指数和行星际条件的关系".空间科学学报 24.2(2004):89-95.
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