In the presence of Ultraviolet light, these gases dissociate, releasing chlorine atoms, which then go on to catalyze ozone destruction.
The disasters that will be discussed are Hurricane Katrina and the Deepwater Horizon oil spill. Additionally, this paper will look into the specifics of what constitutes a natural and man-made disaster.
Specifically, this paper will look into each disaster to include the events surrounding them; the risks; and the assessments. As with natural hazards, man-made hazards are events that have not happened, for instance terrorism. Man-made disasters are examples of specific cases where man-made hazards have become reality in an event. Floods cause the spread of many epidemic diseases. Rapid runoff causes soil erosion. Wildlife habitat and forests are often destroyed.
Manmade structures like buildings, bridges, roads, sewer lines, power lines, etc. Floods cause widespread damage to the standing crops and degrade the agricultural land.
Flood affected areas are faced with acute shortage of food and drinking water. Prevention, Control and Mitigation: Though floods are a natural hazard, it is sometimes intensified due to undesirable human activities. The measures that can be taken to control the extent of flood damage include land use planning, building of physical barriers, preventing human encroachment and use of technology for relief.
Land use planning: Proper land use planning in flood prone areas includes: 1. Demarcation of the flood-prone areas that are first inundated during floods. Construction work and concentration of human population should be avoided in the floodplains. Afforestation on the upper reaches of the river catchment areas to control soil erosion and excessive runoff.
Building of physical barriers: Flood can be prevented by building certain structures, such as: 1. Embankments along the banks of rivers in densely populated areas. Building of reservoirs to collect excess water during floods.
The construction of channels that divert floodwater. Preventing human encroachment: Human encroachment should be avoided in the following areas: 1. Floodplains and catchment areas. This would control deforestation and soil erosion which would prevent excessive runoff. Use of technology for relief: Advanced technology can be used in the following ways: 1.
Advanced communication techniques for flood forecasting and warning. Fast evacuation of people. To provide relief in temporary shelters. Immediate supply of medicines, drinking water, food and clothes. Epidemic diseases must be controlled through spraying, vaccination, etc. Drought: Drought is a condition of abnormally dry weather within a geographic region.
Drought refers to the lack or insufficiency of rain for an extended period of time in a specific region. During droughts, rainfall is less than normal causing a water imbalance and resultant water shortage. It occurs when the rate of evaporation and transpiration exceeds precipitation for a considerable period. Drought should not be confused with dry climate, as in the Sahara or Thar Desert. It is marked by an unusual scarcity of water and food for the humans as well as animals.
Certain regions of the world, such as parts of Central Africa, are characterized by low amount of rainfall resulting in perennial drought-like conditions. Some part of India is often affected by drought even during the rainy season. As India is primarily an agricultural country, droughts cause untold miseries to the common people. Many Indian farmers are still totally dependent on rainfall for irrigation and because of abnormally dry spells there is extensive crop damage.
However, sometimes drought-like conditions also prevail in the Gangetic Plain also. Impact on the Environment: The severity of the drought is gauged by the degree of moisture deficiency, its duration, and the size of the area affected. If the drought is brief, it is known as a dry spell or partial drought. Drought causes serious environmental imbalances, which are summarized below: 1.
Water-supply reservoirs become empty, wells dry up and there is acute water shortage. Groundwater level is also depleted because of less recharge. Soil degradation and erosion occurs. Soil cracks because of shrinkage during desiccation Fig. There is extensive crop damage. People become impoverished and there are diseases due to malnutrition. Widespread damage to flora and fauna air including domestic animals. Prevention, control and mitigation: Rains are caused by a number of natural factors like air currents, wind direction, etc.
Thus, droughts are a natural phenomenon, beyond human control and prevention. Though, global warming may have changed the pattern of rainfall in the recent times. This paper endeavors to show that what masses perceive as natural disasters are because of an array of factors.
The focus is on human activities that create a fovourable environment for drought to become a natural disaster in arid areas Giorgis, Socio-economic and environmental exposure can lead to disastrous consequences from even unpretentious vulnerability Health risks of obesity essay abstract mean median mode research paper main ww1 essay, rima iv becquer english analysis essay joseph finder author biography essay our national hero short essay about friendship miscarriages of justice uk essay order my interests in life essay future professional aspirations essay essay should english be official language of us god is our creator essay, kkr team analysis essay essayah sari la reine de la nuit dessay jeep la cierva blanca analysis essay essay mrunal thakur song art research paper.
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Proverbe il faut essayer in english.I have created timelines with certain family members to try to understand the world that they lived in and how they made certain decisions and lived day today. Along this route of discovery I have seen my ancestors lived through certain natural and man-made disasters. One such disaster that I encountered was the St.
Over-cropping and overgrazing should be avoided.
Proper agricultural techniques: These include the following: 1. When the media portrays a natural disaster it serves one distinct purpose. Preventing human encroachment: Human encroachment should be avoided in the following areas: 1. These tectonic processes are also responsible for the mountain building processes. Order such an essay with us now to get instant essay help from online. Technological emergencies are accidental and their consequences are unintended.
Free Narrative essay example on Natural Disaster Narrative. Some disasters may be short lived such as earthquakes and some other may be of long duration, such as floods.
Satellite images can track the movement and intensity of cyclones. Man-made hazards or disasters are sometimes referred to as anthropogenic. Removing human encroachments around hazardous industries. Scientists who study earthquakes are called seismologists.
In the last years, earthquakes around the world have killed several million people.
Finding true friends essays Finding true friends essays scholarly essays on females in military essay help u of tenn franco zeffirelli romeo and juliet film analysis essay big four auditors comparison essay internet privacy opinion essays sic bressay ferry timetable hong essay on air pollution. Common examples of these disasters are train accidents, aero plane crashes, collapse of buildings, bridges, mines, tunnels, etc. Feel free to use them. Tsunami is a Japanese name for 'harbour waves' generally called tidal waves but actually tsunami.
Industrial disasters result due to accidental leakage of water or air pollutants. Tsunamis are the most catastrophic among natural disasters as they affect a very wide geographical area. Other types of man made disasters which are just as catastrophic include chemical spill, oil spill, arson and terrorism. In November , a severe cyclone caused a 6 m rise in sea-level and the consequent flooding killed approximately three lakh people. Floods are one of the most common natural disasters occurring in many parts of the world every year.
Over population also affects our social environment. Construction work and concentration of human population should be avoided in the floodplains. Earthquake education and evacuation plans. Cyclones generate in the seas and oceans and move with a very high speed towards the land. The exact spot under the earth surface at which an earthquake originates is called the focus or hypocenter.
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Essay on natural disaster of.