information on disaster management, hope you will like it

1. DISASTER MANANGEMENT
BY – ARYAN BELNEKAR
STD – 8TH J
ROLL.NO - 22

3. DISASTER MANANGEMENT
• DISASTER MANAGEMENT REFERS TO THE CONSERVATION OF LIVES AND PROPERTY DURING
NATURAL OR HUMAN-MADE DISASTERS. DISASTER MANAGEMENT PLANS ARE MULTI-LAYERED AND
ARE PLANNED TO ADDRESS ISSUES SUCH AS FLOODS, HURRICANES, FIRES, MASS FAILURE OF
UTILITIES, RAPID SPREAD OF DISEASE AND DROUGHTS. INDIA IS ESPECIALLY VULNERABLE TO
NATURAL DISASTERS BECAUSE OF ITS UNIQUE GEO - CLIMATIC CONDITION, HAVING RECURRENT
FLOODS, DROUGHTS, CYCLONES, EARTHQUAKES, AND LANDSLIDES. AS INDIA IS A VERY LARGE
COUNTRY, DIFFERENT REGIONS ARE VULNERABLE TO DIFFERENT NATURAL DISASTERS. FOR
EXAMPLE, DURING RAIN EXPERIENCE SEVERE DROUGHT DURING SUMMER SEASON.

4. EARTHQUAKE
This Photo by Unknown Author is licensed under CC BY-NC-ND
This Photo by Unknown Author is licensed under CC BY-NC-ND
This Photo by Unknown Author is licensed under CC BY-NC-ND

5. 1. EARTHQUAKE INFORMATION
• AN EARTHQUAKE (ALSO KNOWN AS A QUAKE, TREMOR OR TEMBLOR) IS THE SHAKING OF THE SURFACE
OF THE EARTH RESULTING FROM A SUDDEN RELEASE OF ENERGY IN THE EARTH’S LITHOSPHERE THAT
CREATES SEISMIC WAVES. EARTHQUAKES CAN RANGE IN SIZE FROM THOSE THAT ARE SO WEAK THAT THEY
CANNOT BE FELT TO THOSE VIOLENT ENOUGH TO PROPEL OBJECTS AND PEOPLE INTO THE AIR, AND WREAK
DESTRUCTION ACROSS ENTIRE CITIES. THE SEISMICTY, OR SEISMIC ACTIVITY, OF AN AREA IS THE
FREQUENCY, TYPE, AND SIZE OF EARTHQUAKES EXPERIENCED OVER A PERIOD OF TIME. THE
WORD TREMOR IS ALSO USED FOR NON – EARTHQUAKE SEISMIC RUMBLING.
• AT THE EARTH'S SURFACE, EARTHQUAKES MANIFEST THEMSELVES BY SHAKING AND DISPLACING OR
DISRUPTING THE GROUND. WHEN THE EPICENTRE OF A LARGE EARTHQUAKE IS LOCATED OFFSHORE, THE
SEABED MAY BE DISPLACED SUFFICIENTLY TO CAUSE A TSUNAMI. EARTHQUAKES CAN ALSO
TRIGGER LANDSLIDES AND OCCASIONALLY, VOLCANIC ACTIVITY.

6. HURRICANE
This Photo by Unknown Author is licensed under CC BY-SA

7. 2. HURRICANE INFORMATION
• AROUND THE WORLD, TROPICAL CYCLONES ARE CLASSIFIED IN DIFFERENT WAYS, BASED ON THE
LOCATION (TROPICAL CYCLONE BASINS), THE STRUCTURE OF THE SYSTEM AND ITS INTENSITY. FOR
EXAMPLE, WITHIN THE NORTHERN ATLANTIC AND EASTERN PACIFIC BASINS, A TROPICAL CYCLONE
WITH WIND SPEEDS OF OVER 65 KN (75 MPH; 120 KM/H) IS CALLED A HURRICANE, WHILE IT IS
CALLED A TYPHOON OR A SEVERE CYCLONIC STORM WITHIN THE WESTERN PACIFIC OR NORTH
INDIAN OCEANS.[WITHIN THE SOUTHERN HEMISPHERE, IT IS EITHER CALLED A HURRICANE,
TROPICAL CYCLONE OR A SEVERE TROPICAL CYCLONE, DEPENDING ON IF IT IS LOCATED WITHIN
THE SOUTH ATLANTIC, SOUTH-WEST INDIAN OCEAN, AUSTRALIAN REGION OR THE SOUTH
PACIFIC OCEAN.

8. • WARM SEA SURFACE TEMPERATURES ARE REQUIRED IN ORDER FOR TROPICAL CYCLONES TO FORM AND
STRENGTHEN. THE COMMONLY-ACCEPTED MINIMUM TEMPERATURE RANGE FOR THIS TO OCCUR IS 26–
27 °C (79–81 °F), HOWEVER, MULTIPLE STUDIES HAVE PROPOSED A LOWER MINIMUM OF 25.5 °C
(77.9 °F).HIGHER SEA SURFACE TEMPERATURES RESULT IN FASTER INTENSIFICATION RATES AND
SOMETIMES EVEN RAPID INTENSIFICATION. HIGH OCEAN HEAT CONTENT, ALSO KNOWN AS TROPICAL
CYCLONE HEAT POTENTIAL, ALLOWS STORMS TO ACHIEVE A HIGHER INTENSITY. MOST TROPICAL
CYCLONES THAT EXPERIENCE RAPID INTENSIFICATION ARE TRAVERSING REGIONS OF HIGH OCEAN HEAT
CONTENT RATHER THAN LOWER VALUES. HIGH OCEAN HEAT CONTENT VALUES CAN HELP TO OFFSET
THE OCEANIC COOLING CAUSED BY THE PASSAGE OF A TROPICAL CYCLONE, LIMITING THE EFFECT THIS
COOLING HAS ON THE STORM. FASTER-MOVING SYSTEMS ARE ABLE TO INTENSIFY TO HIGHER
INTENSITIES WITH LOWER OCEAN HEAT CONTENT VALUES. SLOWER-MOVING SYSTEMS REQUIRE HIGHER
VALUES OF OCEAN HEAT CONTENT TO ACHIEVE THE SAME INTENSITY.

9. THANK YOU