| 地磁扰动期间热层大气N_2数密度异常增变 |
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| 引用本文： | 李永平,;朱光武,;秦国泰,;陈华姣,;何玉梅,;唐萍,;李佳,;谭倩倩.地磁扰动期间热层大气N_2数密度异常增变[J].中国科学(E辑),2014(8):883-889. |
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| 作者姓名： | 李永平 ;朱光武 ;秦国泰 ;陈华姣 ;何玉梅 ;唐萍 ;李佳 ;谭倩倩 |
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| 作者单位： | [1]中国科学院空间科学与应用研宄中心,北京100190; [2]中国科学院大学,北京100049 |
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| 基金项目： | 中国载人航天工程资助项目 |
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| 摘 要： | 采用天宫一号轨道大气环境探测器的在轨探测数据,分析了2012年3月和10月地磁扰动期间的热层大气成分数据,对磁暴期间N2异常增变的涨幅、时间、空间特性,低纬地区N2异常增变特点,以及冬夏半球N2异常增变的差异进行探讨,探讨认为:N2数密度的异常增变与地磁扰动及其扰动程度密切相关,增变现象通常出现在夏半球高纬区域上空,磁扰期间所出现的N2数密度异常增变现象与地磁扰动对热层大气加热机理紧密相关.
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| 关 键 词： | 热层大气 大气成分 地磁暴 大气密度 |
The abnormal variation of N2 number density in thermosphere during geomagnetic disturbance |
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| Institution: | LI YongPing, ZHU GuangWu, QIN GuoTai, CHEN HuaJiao, HE YuMei, TANG Ping, LI Jia, TAN QianQian(1. Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, China; 2 University of Chinese Academy of Sciences, Beijing 100049, China) |
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| Abstract: | The response of N2 number density in thermosohere during two geomagnetic disturbance on March and October 2012 is analysed in this paper, data taken by Atmospheric Environment Detector on board Tiangong-1 spacecraft are used. Discuss the abnormal increase range, time and space characteristics, low latitude distribution and features of summer and winter hemisphere of N2 number density during the geomagnetic storms. These results are as follows： the abnormal increase of N2 number density is closely related to geomagnetic disturbance and its intensity, abnormal increase phenomenon usually appears in the high latitudes region of summer hemisphere, N2 number density increase during the geomagnetic disturbance is closely related to the mechanism of atmospheric heat. |
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| Keywords: | thermosphere atmospheric composition geomagnetic storms atmospheric density |
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