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国家地理——龙卷风101 – 译学馆
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国家地理——龙卷风101

Hurricanes 101 | National Geographic

飓风
Cyclone,
台风
typhoon,
龙卷风
hurricane,
全世界用这些名称
all of these names are used around the world
来指代那些人类已知最强劲的
to describe the most powerful storm
暴风雨
known to man.
龙卷风是不可预测的
Hurricanes are unpredictable,
但科学家们已经足够了解龙卷风的力量
but scientists have a thorough understanding of how hurricane form
是如何形成与维持的
and sustain their power.
在大西洋
In the Atlantic Ocean,
飓风季节的高峰在夏天的最后几个月
hurricane season peaks during the late summer months
正是热带水最暖的时候
when tropical water are the warmest.
龙卷风从雷雨中形成
Hurricane’s form from a cluster of thunderstorms,
吸出其中温暖潮湿的空气
that suck up the warm, moist air,
并将其移动到地球高处的大气中
and move it high into Earth’s atmosphere.
暖空气会转化成能量
The warm air is then converted into energy
为风的环形流动提供能量
that powers the hurricane circular winds.
环绕着低压中心的风被叫做 风眼
These winds spin around low-pressure center called the eye.
在风眼半径20-30米是怪异的平静
which can provide a 20 to 30-mile radius of eerie calm.
在外环绕的一层叫做 风眼墙
Encircling it is the eye wall,
是高耸环状的云和部分风速最快的龙卷风
a towering ring of clouds with some of the fastest wind-speeds of the hurricane.
围绕着风眼墙的是一些环状带——雨带
Surrounding the eye wall are curved bands of clouds, the rain bands,
通常十来米宽且下雨 有时还会刮起狂风
often tens of miles wide, releasing sheets of rainand sometimes tornadoes.
当热带风暴的风速最低也有74mph时
When a tropical storm’s windreach at least 74 miles per hour,
它就变成了龙卷风
it becomes a hurricane.
并被萨菲尔-辛普森飓风等级分为一到五级
The hurricane then receives the category ranking of 1 to 5 on the saffir-simpson scale,
分级基于 风速和潜在伤害
based on its wind speed and potential damage.
但当龙卷风靠近陆地时
But windspeed isn’t always the most dangerous component
最危险的并不总是风速
when hurricane come near land.
而是它带来的风暴激增
It’s storm surge.
这是由于靠近的龙卷风将水推向海岸线
Storm surge is caused when winds from an approaching hurricane
并高出海岸线至多20英尺
push the water towards the shoreline
且范围能延伸至100米
up to 20 feet above sea level and can extend 100 miles.
90%由龙卷风造成的死亡
90% of all hurricane deaths
都是风暴激增的结果
are the result of storm surge.
虽然龙卷风会带来巨大的灾难
While hurricanes can cause mass devastation,
但就像其它自然灾害
just like other natural disasters,
它在全球生态系统中有着更重要的意义
deserve a higher purpose within the global ecosystem.
龙卷风通过将热流从赤道
Hurricanes help regulate our climate
移向极点来调节气候
by moving heat energy from the equator to the poles,
保持地球的气温稳定
keeping the earth’s temperature stable.
随着时间过去 科学帮助我们更好地
Over time science has helped us to better understand hurricanes,
了解龙卷风 预测路径
and predict their paths,
设计预警系统拯救生命
saving lives through early warning systems,
以及建设更好的基础设施来保护城市
and helping us build better infrastructure to protect our cities.
我们对于这些复杂的暴风雨了解得越多
The more we study these complex storms,
我们就能准备得更充分
the better we can prepare for them,
最小化它们对人类生命的威胁
and minimize their impact on human lives.

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视频概述

国家地理推出的科普视频,简单介绍龙卷风的形成、组成、危害、地理意义等。

听录译者

茄也

翻译译者

Chide_丨一丨

审核员

审核员A

视频来源

https://www.youtube.com/watch?v=LlXVikDkyTg

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