2018年8月8日 星期三

下擊暴流(英文:Downburst)

On this day 73 years ago, the atomic bomb was dropped on the city of Nagasaki.
See how Tetsuya "Ted" Fujita’s research on the tragic incident led to a discovery that revolutionized aircraft safety.


Downburst - Wikipedia

https://en.wikipedia.org/wiki/Downburst
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downburst is a strong ground-level wind system that emanates from a point source above and blows radially, that is, in straight lines in all directions from the point of contact at ground level. Often producing damaging winds, it may be ...

下擊暴流英文Downburst)是在地面或地面附近由對流性下沉氣流引起的破壞性的強,水平尺度從1公里到10公里。由日本氣象學家藤田哲也發現,在地面或靠近地面可產生平均風速可達17.9米/秒的氣流[1]
藤田哲也將下擊暴流分為微暴流巨暴流,影響範圍在4公里以內稱作「微暴流」,4公里以上稱為「巨暴流」[2]

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