1.
Natural and manmade
disaster
School of environment and earth sciences
Anupama s kate
M.Tech 1st year

2.
Content
• Natural disasters
• Manmade disasters
• Analysis
• Prevention, control and mitigation
• Disaster managent
• Rescue Force
• Referances

3.
Disaster ??

4.
Natural Disaster
Natural disasters are
catastrophic events with
atmospheric, geological,
and hydrological origins
(e.g., droughts,
earthquakes, floods,
hurricanes, landslides) that
can cause fatalities,
property damage and social
environmental disruption

5.
Earthquakes
sudden, rapid shaking of the
earth,
caused by
• the breaking and shifting of
underground rock.
• rapid movement of the
earth’s crust or outer layer

6.
Droughts and Famines
• Famines are extreme shortages of food that cause people to die of
starvation.
• Droughts are unusually long periods of insufficient rainfall

7.
Floods
• Heavy rainfall within a short
duration of time in a particular
region which causes the rivers
and streams to overflow

8.
Tsunami
• Tsunamis are massive sea waves that
are mainly caused due to earthquakes
in the ocean floor or possibly due to
an undersea landslide or volcanic
eruption.
• When the ocean floor is tilted or
offset during an earthquake a set of
waves is created similar to the
concentric waves generated by an
object dropped into the water.

9.
Hurricanes & Cyclone
• Hurricanes are massive storm systems that
form over warm ocean waters and move
toward land. Potential threats from
hurricanes include powerful winds, heavy
rainfall, storm surges, coastal and inland
flooding, rip currents, tornadoes, and
landslides
• Cyclone is an area of low atmospheric
pressure surrounded by a wind system
blowing in anti-clockwise direction, formed in
the northern hemisphere

10.
Avalanche & Landslides
• type of landslide involving a large mass of
snow, ice and rock debris that slides and fall
rapidly down a mountainside
• masses of rock, earth or debris move down
a slope. Debris and mud flows are rivers of
rock, earth, and other debris saturated with
water
• caused by a variety of factors including
earthquakes, storms, volcanic eruptions, fire
and by human modification of land.

11.
Volcanic Eruptions
• A volcanic eruption occurs
when molten rock, ash
and steam pour through a
vent in the earth's crust.

12.
Manmade Disasters
• Man-made disasters can include hazardous material spills, fires,
groundwater contamination, transportation accidents, structure
failures, mining accidents, explosions and acts of terrorism. There are
actions that we can take to prepare to react appropriately to these
events

13.
Hazardous Material Incidents
• Hazardous materials are chemicals that if accidentally released can
cause damage to the environment and health.

14.
Terrorism
• Terrorism is designed to disrupt our lives and to scare us into making
changes in our national goals.
• No one is immune from terrorism.
• Biological attacks involve the release of germs or other biological
substance that results in illness.

15.
Analysis

16.
Prevention, control and mitigation
1. Proper training of personnel working in the hazardous industries.
2. Proper maintenance and care of safety measures.
3. Removing human encroachments around hazardous industries.
4. Making the people aware about the first-aid methods in case of
accidents.
5. Applying wet cloth over the mouth and nose in case of gas leakages
minimizes the health hazards.
6. Remaining indoors in case of radioactive accidents.
7. Providing the people with proper medical care, in some cases throughout
their life.
8. Providing adequate compensation to the affected people by way of
money and employment.

17.
Disasters rescue forces
• National Disaster
Response Force (NDRF)
is a specialised force
constituted "for the
purpose of specialist
response to a
threatening disaster
situation or disaster"
under the Disaster
Management Act, 2005

18.
References
• Www.ndrf.gov.in
• International Journal of Disaster Risk Reduction, 2016