摘要
<正>来自太阳的极紫外辐射将地球大气电离,距地面100公里以上的空间中最主要的离子成分为O+,这些氧离子部分通过地球极尖区从电离层外流到磁层,并约有10%最终从磁层逃逸,造成了地球氧元素的流失(Kronberg et al.,2014)。地球磁场对氧离子具有保护作用,能够有效的抑制氧离子的外流,使大气中的氧气得以维持和积累。在地磁场倒转期间,地球磁场强度可能发生明显衰减,影响
引文
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