中文摘要：

磁暴会引起热层中性成分O和N2的显著变化。为研究热层中性成分随磁暴的变化规律,利用TIMED卫星搭载的全球紫外成像仪探测数据,借助AURIC完成了观测角和太阳天顶角归一化,提出了一种热层O/N2的反演方法。通过O/N2追踪太阳风暴的发生过程,分析了2002年9月29日到10月4日的O/N2数据发现受磁暴影响O/N2发生衰减,且衰减范围由极区向赤道方向延伸。

英文摘要：

Magnetic storms usually cause significant departures of thermospheric O and N2 from their normal values.To study the effects on thermospheric neutral species caused by magnetic storms,a method to retrieve thermospheric O/N2 based on the data obtained from global ultraviolet imager on board TIMED is presented.With the help of AURIC,the normalizations of observing angles and SZAs were preformed to the measurements and a relationship between 135.6/LBHs and O/N2 was established.Finally,applying the proposed method to retrieve O/N2 during a magnetic period（29,September—4,October,2002）,it was shown that magnetic storms could induce significant O/N2 depletion,extending from the polar regions towards the equator.