天气预报 > 自然 > 极光怎么形成的
极光怎么形成的
更新时间: 2021-04-22 15:21:04  

1、极光是地球周围的一种大规模放电的过程。来自太阳的带电粒子到达地球附近,地球磁场迫使其中一部分沿着磁场线(Field line)集中到南北两极。当他们进入极地的高层大气时,与大气中的原子和分子碰撞并激发,产生光芒,形成极光。

2、按照极光的形态分类,可分为匀光弧极光、射线式光柱极光、射线式光弧光带极光、帘幕状极光、极光冕等。

关键词: 极光 怎么 形成

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