Natural Disasters

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Natural Disasters- Earthquake

An earthquake is the result of a sudden release of energy in the Earth's crust that creates seismic waves.Earthquakes are measured using observations from seismometers. The 2011 earthquake off the Pacific coast of Tohoku, was a magnitude 9.0 in Japan that occurred at 14:46 JST on Friday, 11 March 2011. It was one of the five most powerful earthquakes in the world.

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Natural Disasters- Earthquake
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Floods

A flood is an overflow of an expanse of water that submerges land. Floods are a temporary covering by water of land not normally covered by water.Floods have hit many cities in the world and the latest is Orissa.

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Floods
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Tsunami

A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, usually an ocean, though it can occur in large lakes. Owing to the immense volumes of water and the high energy involved, tsunamis can devastate coastal regions.Japan's most powerful earthquake since records began has struck the north-east coast, triggering a massive tsunami which caused a lot of death and destruction.

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Tsunami
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Avalanche

An avalanche is a sudden rapid flow of snow down a slope, occurring when either natural triggers or human activity causes a critical escalating transition from the slow equilibrium evolution of the snow pack. Typically occurring in mountainous terrain, an avalanche can mix air and water with the descending snow. Powerful avalanches have the capability to entrain ice, rocks, trees, and other material on the slope.

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Avalanche
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Famine

A famine is a widespread scarcity of food. This phenomenon is usually accompanied or followed by regional malnutrition, starvation, epidemic, and increased mortality.20 Jul 2011 - The UN declares a famine in two areas of southern Somalia, as conditions deteriorate amid the region's worst drought in over half a century.

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Famine
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Drought

A drought is an extended period of months or years when a region notes a deficiency in its water supply. Generally, this occurs when a region receives consistently below average precipitation. The United Nations says famine has hit two parts of rebel-held Somalia due to a severe drought affecting more than 10 million people in the Horn of Africa.

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Drought
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Tornado

A tornado is a violent, dangerous, rotating column of air that is in contact with both the surface of the earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. A monster tornado killed at least 116 people in Joplin, Missouri when it tore through the heart of the small city on May 22, 2011.

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Tornado
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Tropical cyclone

A tropical cyclone is a storm system characterized by a large low-pressure center and numerous thunderstorms that produce strong winds and heavy rain. Tropical cyclones strengthen when water evaporated from the ocean is released as the saturated air rises, resulting in condensation of water vapor contained in the moist air. Hurricane Katrina of the 2005 Atlantic hurricane season was the costliest natural disaster, as well as one of the five deadliest hurricanes, in the history of the United States

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Tropical cyclone
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Volcanic Eruptions

A volcano can be simply defined as a rupture or an opening on the crust of a planet like earth. This opening allows hot ash, molten rock and gases to blow off from the underground spaces.Material erupted by a volcano is called as lava. Lava is just a name given to magma, once it gets erupted from the mouth of volcano.A plume of ash, estimated six miles (10km) high and three mile wide is seen after a volcano erupted in the Puyehue-Cordon Caulle volcanic chain,Santiago June 4.

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Volcanic Eruptions
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Landslide

A landslide or landslip is a geological phenomenon which includes a wide range of ground movement, such as rockfalls, deep failure of slopes and shallow debris flows, which can occur in offshore, coastal and onshore environments. A critical landslide blocked tracks in some section of the Konkan Railway today, blow the services between Mumbai and the southern states on Mumbai, Aug 30.

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Landslide
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Wildfire

A wildfire is any uncontrolled fire in combustible vegetation that occurs in the countryside or a wilderness area.A wildfire differs from other fires by its extensive size, the speed at which it can spread out from its original source, its potential to change direction unexpectedly, and its ability to jump gaps such as roads, rivers and fire breaks.Devastating fires that swept through eastern Texas this year and has left dozens of people dead or missing and destroyed more than 1,500 homes.

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Wildfire
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