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by masonschultz5674512edc2ec
Last updated 6 years ago

Energy & Environment

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Cyclones develop over warm seas near the Equator. Air heated by the sun rises very swiftly, which creates areas of very low pressure. As the warm air rises, it becomes loaded with moisture which condenses into massive thunderclouds. Cool air rushes in to fill the void that is left, but because of the constant turning of the Earth on its axis, the air is bent inwards and then spirals upwards with great force. The swirling winds rotate faster and faster, forming a huge circle which can be up to 2,000 km across. At the centre of the storm is a calm, cloudless area called the eye, where there is no rain, and the winds are fairly light. Cyclones are very often in open seas, and there is no annual time that it occurs.

Some of the things you can do to prepare for the unexpected, such as assembling a supply kit and developing a family emergency plan, are the same for all types of hazards. However each emergency is unique and knowing the actions to take for each threat will impact the specific decisions and preparations you make. By learning about these specific threats, you are preparing yourself to react in an emergency.

Check with your local council or your building control authority to see if your home has been built to cyclone standards.Check that the walls, roof and eaves of your home are secure.Trim treetops and branches well clear of your home (get council permission).Preferably fit shutters, or at least metal screens, to all glass areas.Clear your property of loose material that could blow about and possibly cause injury or damage during extreme winds.In case of a storm surge/tide warning, or other flooding, know your nearest safe high ground and the safest access route to it.Prepare an emergency kit containing:a portable battery radio, torch and spare batteries;water containers, dried or canned food and a can opener;matches, fuel lamp, portable stove, cooking gear, eating utensils; anda first aid kit and manual, masking tape for windows and waterproof bags.Keep a list of emergency phone numbers on display.Check neighbours, especially if recent arrivals, to make sure they are prepared.

Preparing for natural disasters

Where is it?

Preparing for cyclones


What is it?

The 1970 Bhola cyclone was a devastating tropical cyclone that struck Bangladesh. and India's West Bengal on 12 November 1970. It remains the deadliest tropical cyclone ever recorded and one of the deadliest natural disasters to this day. Up to 500,000 people lost their lives in the storm, primarily as a result of the storm surge that flooded much of the low-lying islands of the Ganges Delta.

The main effects of tropical cyclones include heavy rain, strong wind, large storm surges at landfall, and tornadoes. The destruction from a tropical cyclone depends mainly on its intensity, its size, and its location. Tropical cyclones act to remove forest canopy as well as change the landscape near coastal areas, by moving and reshaping sand dunes and causing extensive erosion along the coast. Even well inland, heavy rainfall can lead to mudslides and landslides in mountainous areas. Their effects can be sensed over time by studying the concentration of the Oxygen-18 isotope within caves within the vicinity of cyclones' paths.

Don't go outside until officially advised it is safe.Check for gas leaks. Don't use electric appliances if wet.Listen to local radio for official warnings and advice.If you have to evacuate, or did so earlier, don't return until advised. Use a recommended route and don't rush.Beware of damaged power lines, bridges, buildings, trees, and don't enter floodwaters.Heed all warnings and don't go sightseeing. Check/help neighbours instead.Don't make unnecessary telephone calls.


Recorded Event

A cyclone is a system of winds rotating inward to an area of low atmospheric pressure, with a counterclockwise or clockwise circulation; a cyclone is an area of closed, circular fluid motion rotating in the same direction as the Earth. This is usually characterized by inward spiraling winds that rotate counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere of the Earth.


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