Cyclostrophic wind

Japanese: cyclostrophic wind(英語表記)cyclostrophicwind
Cyclostrophic wind

…In the opposite case, that is, in a low pressure area, R > 0 and the wind will move counterclockwise.
[cyclostrophic wind]
When the radius is small and the wind speed is high, such as in the center of a typhoon or a tornado, the Coriolis force is negligibly small compared to the centrifugal force. In this case, the hypothetical wind that blows when the centrifugal force and the pressure gradient force are perfectly balanced is called a gyrostrophic wind.

*Some of the terminology that refers to "cyclostrophic wind" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…逆の場合,すなわち低気圧域内の場合はであるからR>0となり,風は反時計回りとなる。
[旋衡風cyclostrophic wind]
 台風の中心や竜巻などのように半径が小さくて風速が大きい場合,遠心力に比べてコリオリの力は無視できるほど小さい。このとき,遠心力と気圧傾度力が完全につり合った状態で吹く仮想的な風を旋衡風という。…

※「cyclostrophic wind」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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