Aurora Storm - Aurora Storm

Japanese: オーロラあらし - おーろらあらし
Aurora Storm - Aurora Storm

...Therefore, light can only be emitted at high altitudes where there are fewer collisions with other atmospheric particles.
[Explosive development of the aurora (auroral storm)]
The aurora is constantly changing, but the most notable activity is the explosive development (auroral storm) in which the midnight oval rapidly brightens and begins to move violently, expanding the width of the oval to hundreds of kilometers in a matter of minutes. It is thought that when the southward component of the magnetic field in the solar wind increases, the inflow of energy from the solar wind into the Earth's magnetosphere increases, resulting in an explosive increase in the number of incoming electrons, which causes this explosive development of the aurora.

*Some of the terminology that refers to "aurora storm" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…したがって,他の大気粒子との衝突が少ない高い所でしか光を放出できないという事情による。
[オーロラの爆発的発達(オーロラあらし)]
 オーロラは常に変動しているが,最も著しい活動は,真夜中のオバルが急速に明るさを増し,激しく動き始めて,数分の間にオバルの幅が数百kmにも広がる爆発的な発達(オーロラあらし)である。太陽風の中の磁場に南向き成分が増えると太陽風から地球磁気圏へのエネルギー流入が増加し,その結果,入射電子が爆発的に増加してこのような爆発的なオーロラの発達が起こるものと考えられている。…

※「オーロラあらし」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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