期刊文献+

磁暴期间热层中性大气受热抬升的观测例证 被引量:6

OBSERVATION EXAMPLES OF THE NEUTRAL ATMOSPHERE LIFTING DURING THEMOSPHERIC MAGNETIC STORMS
下载PDF
导出
摘要 采用AE-D卫星上中性大气数密度的观测资料 ,分析了 1 975年 1 1月内多次磁暴期间热层大气中氦和原子氧与氮分子之数密度比值的变化 .结果表明 ,磁暴对中性大气加热的理论是符合实际情况的 .低热层大气受热抬升使较高高度上的大气中质量较轻成分的数密度相对比例有明显下降 ,而较重成分的百分比则有增加 .与地磁宁静期间相比 ,在 1 40—1 6 0km高度上n(He) /n(N2 )之比值降低了一个数量级 ,而n(Ar) /n(N2 )的增幅则略大于一个数量级 .此比值的变化幅度大小随高度而变 ,但各高度上暴时变化的发展趋势是基本一致的 . Using the neutral atmospheric data of number density radio of n (He)/ n (N 2) and n (O)/ n (N 2), from the satellite AE D we analyse their variations during magnetic storms in November, 1975. The results indicate that the response of atmospheric constituents to the geomagnetic heating is basically coincided with that expected from related theory. The lifting of the neutral atmosphere with higher proportion of heavier constituents (such as N 2 and Ar) leads to a relative decrease of the concentration of lighter constituents (such as He and O). The ratio of n (He)/ n (N 2) decreases by about one order of magnitude at 150km, while n (Ar)/ n (N 2) increases by a little more than one order of magnitude, as compared with that during magnetic quiet day. The variation of number density ratio varies with altitude, but their developing tendencies with storm time at different heights are similar. [
出处 《地球物理学报》 SCIE EI CAS CSCD 北大核心 2001年第4期461-466,共6页 Chinese Journal of Geophysics
基金 国家自然科学基金九五重大项目 ( 49990 4 55)
关键词 磁暴加热 热层大气 动力学 卫星观测 成分数密度比值 原子氧 氮分子 Heating of geomagnetic storms, Thermosphere, Atmospheric dynamics, Observation on board of satellite, Number density ratio of compositions.
  • 相关文献

参考文献3

二级参考文献6

共引文献14

同被引文献89

引证文献6

二级引证文献48

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部