展期：二零一一年十二月 Date : 2011 DEC
館藏月展 Monthly Feature Display
天氣和自然災害
Weather and Natural Disaster
為何會下雨
鋒與天氣
Why does it rain?
風暴和龍卷風
Fronts and Weather
海嘯
Hurricane and Tornadoes
水災
Tsunamis
火山爆發
Floodings
Volcano eruption
展覽內容 Content
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影音資料 AV Materials
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專題海報 Poster
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有關書籍 Books
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影音播放 Video Show
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館藏索引 Collection Guide
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幻燈播放 Holoscreen Slide Show
展覽地點Display Location:
地下視聽區、一樓大堂、二樓消閒閱讀地帶
G/F Audio Visual Area; 1/F Lobby; 2/F Leisure Reading Area
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天氣和自然災害 Weather and Natural Disaster
Related Academic Programme in CUHK
• Establishment of a BSc degree programme in Environmental
Science (ENS) in the 1992/95 triennium.
• Jointly offered by the Departments of Biochemistry, Biology and
Chemistry. Since the 90's, much effort has been directed towards
the protection of the environment and the conservation of natural
resources.
• The new environmental campaign significantly increases the
demand for specialists and technologists to work on various types
of environmental problems.
[CUHK Environmental Science Programme http://www.cuhk.edu.hk/ens/html/aboutus/aboutens.html]
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天氣和自然災害 Weather and Natural Disaster
What is Weather?
• The state of the atmosphere at a specific time and
with respect to its effect on life and human activities.
• It is the short term variations of the atmosphere, as
opposed to the long term, or climatic, changes.
• It is often referred to in terms of brightness,
cloudiness, humidity, precipitation, temperature,
visibility, and wind.
[The Weather Channel, LLChttp://www.weather.com/]
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天氣和自然災害 Weather and Natural Disaster
Why does it rain?
• On a warm humid day, if we take a bottle
of beverage from the refrigerator, we
may notice that water will appear on the
bottle surface. This is due to the
property that cool air holds less moisture
than warm air. In this case, water vapour
invisible to human eye in the air is cooled
on the surface of the bottle.
Condensation takes place as the water
vapour turns into visible water droplets…
Please read the whole article from the post on the G/F display area.
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天氣和自然災害 Weather and Natural Disaster
Fronts and Weather (鋒與天氣)
• What is an air mass?
• An air mass is defined as a large mass
of air with fairly uniform temperature
and humidity, or in meteorological
term, small temperature and humidity
gradients.
• What is a front?
• A front is defined as the transition zone
between two different air masses, where
the horizontal gradients of temperature
and humidity are relatively large…
Please read the whole article from the post on the G/F display area.
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天氣和自然災害 Weather and Natural Disaster
Hurricanes (風暴)
• What are Hurricanes?
• The terms "hurricane" and
"typhoon" are regionally specific
names for a strong "tropical
cyclone".
• A way to think of a hurricane is as a
large heat engine. The fuel is
moisture from warm ocean water.
• The moisture is converted to heat in
the thunderstorms that form…
Please read the whole article from the post on the G/F display
area.
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天氣和自然災害 Weather and Natural Disaster
Hurricanes (風暴)
• What are tsunamis?
• Tsunamis (pronounced soo-ná-mees), also known as seismic sea
waves (mistakenly called “tidal waves”), are a series of enormous
waves created by an underwater disturbance such as an
earthquake, landslide, volcanic eruption, or meteorite.
• A tsunami can move hundreds of miles per hour in the open ocean
and smash into land with waves as high as 100 feet or more…
Please read the whole article from the post on the G/F display area.
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天氣和自然災害 Weather and Natural Disaster
Tsunamis (海嘯)
• What are tsunamis?
• Tsunamis (pronounced soo-ná-mees), also known as seismic sea
waves (mistakenly called “tidal waves”), are a series of enormous
waves created by an underwater disturbance such as an
earthquake, landslide, volcanic eruption, or meteorite.
• A tsunami can move hundreds of miles per hour in the open ocean
and smash into land with waves as high as 100 feet or more…
Please read the whole article from the post on the G/F display area.
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天氣和自然災害 Weather and Natural Disaster
Volcano Eruptions (火山爆發)
• What are Volcano Eruptions?
• A volcano is a vent through which molten
rock escapes to the earth's surface.
• Unlike other mountains, which are pushed
up from below, volcanoes are built by
surface accumulation of their eruptive
products - layers of lava, ashflows, and
ash.
• When pressure from gases within the
molten rock becomes too great, an
eruption occurs.
• Volcanic hazards include gases, lava and
pyroclastic flows, landslides, earthquakes,
and explosive eruptions...
Please read the whole article from the post on the G/F display area.
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天氣和自然災害 Weather and Natural Disaster
Floodings (水災)
• What are Floodings?
• A flood occurs when water overflows or
inundates land that's normally dry.
• This can happen in a multitude of ways.
• Most common is when rivers or streams
overflow their banks.
• Excessive rain, a ruptured dam or levee,
rapid ice melting in the mountains, or
even an unfortunately placed beaver
dam can overwhelm a river and send it
spreading over the adjacent land, called
a floodplain…
Please read the whole article from the post on the G/F display area.
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天氣和自然災害 Weather and Natural Disaster
References
AOML. FAQ: Hurricans, typhoons, and tropical cyclones.
http://www.aoml.noaa.gov/hrd/tcfaq/tcfaqHED.html
Centers for Disease Control and Prevention. Tornadoes.
http://www.bt.cdc.gov/disasters/tornadoes/
Flood Risk Assessment. http://www.floodrisk.co.uk/
Hong Kong Observatory. http://www.hko.gov.hk/
International Tsunami Information Center. Tsunami Risk Zones.http://itic.iocunesco.org/index.php?option=com_content&view=category&layout=blog&id=1166&Itemid=
1166&lang=en
National Disaster Education Coalition, Washington, 1999. Talking about disaster: Guide for
standard messages. http://www.disastercenter.com/guide/volcano.html
Ocracle ThinkQuest. Forces of Nature.
http://library.thinkquest.org/C003603/english/tornadoes/casestudies.shtml
ProjectArcix: Case study of Mount Saint Helens
http://www.projectarcix.com/lite/naturaldisasters/volcano/casestudy.html
Scholastic.com. Tornadoes. http://teacher.scholastic.com/
Texas A&M University, OceanWorld. Tsunami.
http://oceanworld.tamu.edu/resources/oceanography-book/tsunamis.htm
The Weather Channel. http://www.weather.com/
Weather Wiz Kids®. Hurricane. www.weatherwizkids.com/weather-hurricane.htm
台灣中央氣象局. 地震百問Knowledge. http://scman.cwb.gov.tw/eqv5/eq100/100/064.htm
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