Disaster management involves responding to and mitigating extreme natural or man-made events that exceed tolerable limits and cause catastrophic losses. Tropical cyclones are among the most powerful and destructive atmospheric storms, with wind speeds up to 400 km/hr and heavy rainfall. Mitigation efforts include tree planting, constructing dams and drainage systems, and evacuation routes. Floods occur when heavy rain or snowmelt causes water to overflow riverbanks for several days. Drought is a prolonged period of dryness that can kill vegetation and change ecosystems. Earthquakes generate seismic waves that cause buildings and infrastructure to collapse, sometimes triggering tsunamis and landslides. Disaster relief includes search and rescue operations, temporary shelter, healthcare, and

1. DISASTER
MANAGEMENT

2. The disaster management may be
defined as ‘the extreme event either
natural or man induced , which exceed
the tolerable magnitude within or
beyond certain limits , make adjustment
difficult and result in catastrophic losses
Enviromental disaster and their
management

3. Tropical cyclones
Tropical cyclones are most powerful ,
destructive, dangerous,and deadly
atmospheric storms on the earth. The cyclones
move at the speed of 120-400 km/hr. Tropical
cyclone become more dangerous because of
their high speed , high tidal surge , high
intensity of rainfall , very low atmospheric
pressure , and their persistance for several

4. Mitigation of cyclones
●Tree plantation on coastal belts.
●Construction of dams , lakes , and
wind breaks.
●Construction of proper drainage and
wide roads for quick evacuation of
affected people.

5. Floods
Flood means inundation of
extensive land area with water for
several days in continuation.
people conceive floods when
water from heavy rains or sudden
snow melt , overflows the bank of

7. Drought refers to condition of
dryness for prolonged period .
Prolonged drought condition in a
region change the biotic condition
of the ecosystem due to death of
Droughts

8. Causes of drought

9. An earthquake (also known as
a quake, tremor or temblor) is the
perceptible shaking of the surface of the
Earth, which can be violent enough to
destroy major buildings and kill thousands
of people.
Earthquake

10. ●Tsunamis► The seismic waves caused by
earthquakes travelling through sea water,
generates high sea waves called tsunamis.

11. Effects of earthquake
The earthquake inflict great damage to
human structures such as building roads,
factories, dams , bridges and thus cause
heavy loss of human property.
The shock produced by earthquake in hilly
and mountainous area may cause
landslides , which damage the elements and
transport systems on the lower slope

12. Relief activities include rescue,
relocation, providing food and water,
preventing disease and disability,
repairing vital services such as
telecommunications and transport,
providing temporary shelter and
emergency health care.
Disaster relief

13. There should be regular
monitoring of the
environmental changes
caused by human activities
to asses the genesis of
natural disasters
Disaster prediction

14. It includes the study of the
contributing factor and
mechanisms of natural
disasters and identification of
terrain risk areas on the basis
of remote sensing ,
Disaster research

15. Disaster education plays a
significant role in disaster
reduction . It arouse
awareness about the hazards
of disaster , help the people to
improve the standard of
Education

16. These help in natural disaster
reduction and management
programs by providing maps of
the problem areas , historic
informations from local people , a
planning framework for local
politicians and past experiences of
Geographic Information Systems and Aerospace Surveys