Magnetospheric substorms

Japanese: 磁気圏あらし(磁気圏嵐) - じきけんあらし（英語表記）magnetospheric substorms

Also known simply as a substorm. A magnetospheric storm is a process in which energy that flows into the magnetosphere due to the interaction between the solar wind and the Earth's magnetic field is explosively consumed in the auroral oval region, and refers to the basic form of a large-scale electromagnetic disturbance phenomenon that occurs throughout the Earth's magnetosphere. The concept of a substorm was first introduced by Shunichi Akasofu in 1964 as a result of summarizing the time-dependent development of auroras and polar magnetic field variations. Later, as satellite observations progressed and the connection between auroral phenomena and magnetospheric disturbances became clear, the term came to be used as a general concept from the standpoint of attempting to understand magnetospheric phenomena in a unified way.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

単にサブストームともいう。磁気圏あらしは，太陽風と地球磁場の相互作用で磁気圏内に流入したエネルギーが，オーロラ･オバル領域で爆発的に消費される過程であり，地球磁気圏全体にわたる大規模な電磁じょう乱現象の基本形態を指す。サブストームという概念は，最初はオーロラや極域磁場変動の時間的発達過程をまとめた結果，1964年に赤祖父俊一により導入されたものである。その後，衛星観測が進み，オーロラ現象と磁気圏じょう乱とのつながりが明らかにされる過程で，磁気圏現象を統一的に理解しようとする立場から一般的概念として使われるようになった。

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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