Geostrophic wind

Japanese: geostrophic wind(英語表記)geostrophicwind
Geostrophic wind

...This pressure difference creates a force that accelerates air from the high pressure area to the low pressure area, i.e., a pressure gradient force, which causes wind to blow.
[geostrophic wind]
The pressure difference should be eliminated immediately if the air moves due to the pressure gradient force, but the pattern of pressure distribution does not change suddenly and the wind blows relatively steadily because the wind does not cross the isobars, but blows almost parallel to them in a state of equilibrium. This state of equilibrium is brought about by the action of the Coriolis force in addition to the pressure gradient force, as shown in Figure 2.

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…この気圧差のために,高圧部から低圧部へ空気を加速する力,すなわち気圧傾度力が生じ風が吹くのである。
[地衡風geostrophic wind]
 気圧差は気圧傾度力によって空気が移動すればすぐに解消してしまうはずであるが,一般に気圧分布のパターンが急激には変化せず比較的定常に風が吹くのは,風が等圧線を横切らず,平衡状態では等圧線にほぼ平行に吹くからである。このような平衡状態は図2に示すように気圧傾度力のほかにコリオリの力が作用することによってもたらされるものである。…

※「geostrophic 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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