This document discusses the management of cyclones, including: - Defining cyclones as areas of low atmospheric pressure characterized by inward spiraling winds that rotate counter-clockwise in the northern hemisphere and clockwise in the southern hemisphere. - Explaining that cyclones are known as hurricanes, typhoons, or cyclones depending on where they occur. - Detailing the structure and formation of cyclones and categorizing different types including polar, polar low, sub-tropical, and tropical cyclones. - Identifying major factors for cyclone disasters such as human effects on climate change and global warming, destruction of coastal forests, and poverty exacerbating damage. - Providing recommendations for prec

1. MANAGEMENT
OF CYCLONES

2. CONTENTS :
 What Are Cyclones ?
 Structure & Formation.
 Categorization.
 Major Factors Responsible For Cyclone Disaster.
 Preventions To Be Taken Before, During & After Cyclones.

3. A cyclone is an area of low atmospheric pressure
characterized by inward spiraling winds that rotate
counter clockwise in the northern hemisphere and
clockwise in the southern hemisphere of the Earth.
A cyclone is an area of low atmospheric pressure
characterized by inward spiraling winds that rotate
counter clockwise in the northern hemisphere and
clockwise in the southern hemisphere of the Earth.
DEFINITION

4. CYCLONE'S ARE NAMED VARIOUSLY IN VARIOUS
REGIONS
 A tropical cyclone is the general term for violent circular winds
with torrential rains that originate in the tropics.
 Hurricanes is the term when they occur in the Atlantic Ocean
 They are called typhoons in the Pacific Ocean.
 They are called cyclones in the Indian Ocean.

5. STRUCTURE AND FORMATION:
• The structure of the cyclone
consists of northern
hemisphere, center and
southern hemisphere. Usually
a cyclone hits where there is
low atmospheric pressure and
the low atmospheric pressure
are mostly found in tropical
and sub-tropical regions.

6. FORMATION OF CYCLONE :
• Cold- core cyclones:
 These cyclones form due to the motion of a cyclone. The
pressure here increases upwards and low surface pressure.
• Warm-core cyclones:
 It starts due to the upper pressure and as the cyclone forms it
increases its strength.

8. CATEGORIZATION: CATEGORIZATION:

9. Polar cyclones:
• Polar cyclones:
Polar cyclone is a low pressure
weather system usually spans
up to 1,000 to 2,000kms in
which the area circulates in a
counter clockwise direction in
northern hemisphere and
clockwise in southern
hemisphere.

10. POLAR LOW
• Polar low:
This is found over ocean areas. It
has a horizontal length scaling
less than 1,000kms and exists no
more than a couple of days. They
are difficult to detect using
conventional weather reports,
which is hazardous for shipping,
gas and oil plat forms.

11. SUB-TROPICAL CYCLONE
• Sub-tropical:
These cyclones have the
characteristics of tropical
cyclones. It can be formed
in a wide band of latitude
from the equator to 50
degrees.

12. Tropical cyclones:
• Tropical cyclones:
A tropical cyclone is the
storm system fueled by
the heat released when
moist air rises and the
water vapour in it
condenses.

13. EXTRATERRESTRIAL CYCLONES
• This cyclone is found on
mars by the Hubble space
telescope. These are not
unique to earth. These
cyclones are common on
Jovian planets like the
small dark spots on
Neptune, Mars.

15. Major Factors Responsible For Cyclone
Disaster:
• Manifestation of humanity:
Manifestation of humanity overloading the earth’s ecology due to global warming is a
reality that cannot be neglected. The human effect on the climate is the major factor
leading to cyclone.
Ecological impacts are of various kinds like:
1: Use of land.
2: Use of water.
3: Effects on bio-diversity.
4: Use of non-renewable resources.
5: Production of green house gases.
6: Production of other un acceptable pollutants.

16. Cont’d…….
• Destruction:
 The destruction, during recent decades, of coastal forests removed a barrier
which formerly mitigated the effects of waves and wind from cyclonic
storms.
• Poverty:
 The standard of protection such as housing and infrastructure in an
inappropriate way for a region subject to frequent intense cyclones. And for
poor people, without savings or insurance, total loss turns a disaster into a
catastrophe.

17. PEOPLE’s SUFFERINGS AND
SORROWS AT THE TIME OF
CYCLONE

23. • Keep a list of emergency phone numbers handy,
including numbers for your local Police, Fire, Ambulance,
State Emergency Service, etc..
• Clear your property of any loose items that could become
missiles during extreme winds (eg sheet iron and wood).
• Find out how and where to turn off power, gas and water
supplies. Store your important documents (eg wills,
passports, photos, birth certificates) in a fire/water-proof
container or safe deposit box.
• Check that you have adequate household and contents
insurance and which hazards are not covered by the
policy.
Prevention To Be Taken Before A
Cyclone:

24. • Disconnect all electrical appliances and turn off the gas .
• Fuel your car and park it under solid cover.
• Pack an evacuation kit including your emergency kit, warm
clothing, essential medications, valuables, papers, photos and
keepsakes in waterproof bags.
• Stay inside and shelter in the strongest part of the building.
Continue to listen to your portable radio for updates and
advice.
• Beware of the calm 'eye' of the cyclone. If the wind suddenly
drops, don't assume that the cyclone is over. Violent winds will
soon resume from the opposite direction .
• If you are driving, STOP - but well away from the sea and
clear of trees, power-lines and watercourses. Stay in your
vehicle.
Prevention At The Time When Cyclone
Hits:

25. • Don't go outside until officially advised it is safe to do so.
• Check for gas leaks and don't use electrical appliances if wet.
• Keep listening to your local radio for official warnings and advice.
• If you did evacuate your home, don't return until advised.
• Beware of fallen power lines, damaged bridges, buildings and
trees, and don't enter floodwaters. Don't make any unnecessary
telephone calls.
Preventions To Be Taken After Cyclone:

28. THANK YOU