Types of natural disasters tam-2014-01

1. NATURE OF DISASTER AND ITS TYPES S.TEJASWITHA TAM/2014-01 S

2. DISASTER Disaster is an overwhelming disruption occuring on a scale sufficient to require outside assistance. -PAHO 1980 Disasters are exceptional events which kill large number of people. -RED CROSS

3. WHAT IS A DISASTER Extreme weather events Extreme geologic event Industrial mishaps Famine Major populaton displacement

4. NATURE OF DISASTER It may occur suddenly in Time. May develop over a period of time.

5. What disasters would and could effect our community? MANMADE NATURAL

6. Natural and Manmade Disasters

7. Natural Disasters

8. Types of Natural Disasters Tornadoes Hurricanes Earthquakes Volcanoes Floods Tsunamis Winter Storms Wildfires Avalanches Land slides Droughts Cyclones

9. Tornadoes Rotating, funnel-shaped clouds from powerful thunderstorms Winds up to 300 MPH capable of producing major damage More occur in the United States than anywhere else in the world; they occur in every state in America.

10. TORNADO

11. Effects of Tornadoes in Alabama Tuscaloosa County: December 16, 2000

12. Hurricanes Massive severe storms occurring in the tropics Winds greater than 75 MPH Clouds & winds spin around the eye Produce heavy rains, high winds, large waves, and spin-off tornadoes :

13. Effects of Alabama Hurricanes Hurricane Frederick - 1979 Hurricane Ivan 2005

14. HURRICANE

15. Earthquakes Shaking caused by movements of plates in the earth’s crust Occur along faults – borders between two plates Occur most often along the Ring of Fire

16. Volcanoes More than 500 active volcanoes in the world; over half in the Ring of Fire Pressure builds below the earth’s surface producing eruptions of lava, rock, and volcanic gases

17. Volcano

18. Floods Result from heavy rains May involve rivers overflowing, storm surge/ocean waves, & dams or levees breaking Most common natural hazard Flashfloods = floods that happen very fast

19. FLASH FLOODS

20. FLOODS

21. Tsunamis Form as a result of earthquakes, volcanoes, or landsides under the ocean Waves grow taller as they reach the coast Four out of Five occur in the Ring of Fire Over 200,000 people killed in the 12/26/05 Indian Ocean tsunami

22. Effects of Tsunamis Indian Ocean Tsunami – December 26, 2005

23. Winter Storms May include snow, ice storms, sleet, freezing rain, and extremely cold temperatures Most deaths occur in automobiles Storms may cause widespread power outages

24. Wildfires Occur in forests, grasslands, and wooded areas Most common causes: lightning and human accidents Burn more than 4 million acres in the U.S. each year

25. Wildfires

26. Man-Made Disasters Biological Chemical Nuclear Radiological Explosions

27. Biological Threats A biological attack is a release of germs or other biological substances. Many agents must be inhaled , enter through a cut in the skin or be eaten to make you sick. Some biological agents can cause contagious diseases, others do not. Anthrax virus,Ebola virus.

28. Chemical Threats A chemical attack is the deliberate release of a toxic gas, liquid or solid that can poison people and the environment. Chemical spills can also wreak havoc on the environment. Ex:Bhopal tragedy a toxic gas is released i.e; methyl iso cyanide.

29. Nuclear Threats Nuclear threat that occur recently in japan. Che mobyl nuclear accident. Radiation Threats . It is NOT a nuclear blast. The force of the explosion and radioactive contamination . will be more localized.

30. SOME OTHER EXAMPLES OF MAN MADE DISASTERS . Hiroshima and nagasaki atomic blast. Open oil spills in gulf of mexico.

31. THANK YOU