首页资讯教育外语Beaufort Scale of Wind 蒲福风力等级表 (航海英语)
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Beaufort Scale of Wind 蒲福风力等级表 (航海英语)

诺哈网2023-08-25 22:58:250

Beaufort Scale of Wind 蒲福风级表

Beaufort Scale Description Wind speed(knot)

0

Calm 无风

<0

Sea like a mirror

1

light air 软风

1-2

Ripples but without foam crests

2

Light breeze 轻风

3-6

Small wavelets. Crests do not break

3

Gentle breeze 微风

7-10

Large wavelets. Perhaps scattered white horses

4

Moderate breeze 和风

11-15

Small waves. Fairly frequent white horses

5

Fresh breeze 清风

16-20

Moderate waves, many white horses

6

Strong breeze 强风

21-26

Large waves begin to form; white foam crests,probably spray

7

Near gale 疾风

27-33

Sea heaps up and white foam blown in streaksalong the direction of the wind

8

Gale 大风

34-40

Moderately high waves, crests begin to break into spindrift

9

Strong gale 烈风

41-47

High waves. Dense foam along the direction ofthe wind. Crests of waves begin to roll over. Spray may affect visibility

10

Storm 狂风

48-55

Very high waves with long overhanging crests. The surface of the seatakes a white appearance. The tumbling of the sea becomes heavy and shocklike. Visibility affected

11

Violent storm 暴风

56-63

Exceptionally high waves. The seais completelycovered with long white patches of foam lying inthe direction of the wind. Visibility affected

12

Hurricane 飓风

≥64

The air is filled with foam and spray. Sea completely white with driving spray. Visibility very seriously affected

蒲福风级(Beaufort scale)是国际通用的风力等级,由英国人弗朗西斯·蒲福(Francis Beaufort)于1805年拟定,用以表示风强度等级。风力等级简称风级,是风强度(风力)的一种表示方法,故又称“蒲福风力等级表”。它最初是根据风对地面物体或海面的影响大小分为0—12级, 共13个等级。 自1946年以来,风力等级又作了扩充,增加到18个等级(0—17级)。蒲福风级表最开始时只运用于海上,经改良后也可用于陆地。1947年第12届国际气象台长会议上被正式承认。

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