Contact Author Natural disasters refer to environmental phenomenon that are destructive and occur naturally. Natural disasters include floods, volcanic activity, hurricanes, droughts, and earthquakes. While some of these disasters can be predicted and prepared for, they cannot be completely avoided and may result in damage.
Natural Disasters on Earth: Essay on Natural Disasters Words Article shared by: Here is your comprehensive essay on Natural Disasters!
A natural disaster is unforeseen, severe and immediate. Pollution, ozone depletion in the stratosphere and global warming come in this category. The destructive potential of any natural hazard is estimated basically by its spatial extent and severity.
Spatial extent upto which the effect of a disastrous event could be felt may easily be classified into small, medium and large scales. The phenomenon extending from a few kilometers to a few tens of kilometers are termed as small scale.
Growing industrialisation and unjustified exploitation of natural resources have brought our echo system to a verge of non-reversibility and imbalance. This has led to a threat from a set of natural hazards like pollution, global warming and ozone depletion on large or global scale.
The management aspect of disaster may be classified as: The most important is the early warning systems. Unless sufficient advance notice is available, evacuation of the population likely to be affected cannot be undertaken.
There are two aspects of early warning system. One is the availability of an effective technique to forecast the disaster with its extent and the other is effective communication of the same to the civil authority responsible for rescue operations.
In some phenomena, such as cyclones, flood, etc. Hence early warning, communication, and rescue operations are possible. But, in a few cases like flash floods, microburst, etc. On the contrary, in earthquakes no proven methods has yet been evolved to give any prior warning and so post-hazard mitigation is the only alternative.
Role of Communication For a developing country like India, the role of communication in disaster mitigation is extremely critical.
These can neither be provided in a short span of time available for mitigation nor are there resources to do so. We have to depend on existing links, many of which completely break down during the disaster. The various types available for dissemination of disaster warning as well as arranging mitigation are: This assumes that the earth stations at the two ends are suitably located to remain unaffected.
Experience has shown that it remains completely unaffected under the severest cyclonic condition. However, the system is limited to one way communication only. The only addition required is the missing link between the nearest earth station to police headquarters.
This would be a cost effective and reliable communication system for disaster warning and mitigation. The theory of plate tectonics offers a comprehensive explanation for several geological phenomena — continental drift, mountain building and volcanism, and, of course, earthquake.
According to this theory, when the molten mass that was the earth billions of years ago cooled down, the crust that was formed was not one homogenous piece but broken into about a dozen large plates and several smaller ones with their thickness ranging from 30 km down to the lithosphere at depth of about km or so.
The plates are in incessant motion, with speeds of about 1 cm to 5 cm a year. Where two places converge or collide, a deep trench forms and one plate is deflected downwards into the asthenosphere which lies below the crust and the lithosphere.
When two thick continential plates collide, rocks on the land are relatively light and too buoyant to descend into the asthenosphere. The result is a huge zone of crushing, with rocks and other materials being folded.
And this is how the Himalayas have emerged or, in fact, are continuing to emerge. As the deformation of the plate margins goes on, energy builds up in rocks in the form of elastic strain which continues till it exceeds their elastic limits and the rocks give way. The sudden release of stored elastic energy causes earthquakes.
Earthquakes in India are caused by the release of elastic strain energy created and replenished by the stresses from the collision between the Indian plate and the Eurasian plate. The most intense earthquakes occur on the boundaries of the Indian plate to the east, north and west.
In the Indian plate, faults are created when this rubs against the Eurasian plate. When an earthquake occurs along a fault line within the plate, it is called an intra-plate earthquake.
The majority of the earthquakes occur along plate boundaries. Earthquakes are also caused by volcanic activity.
Construction of large water reservoirs may also cause earthquakes—these are called reservoir-induced earthquakes.Dec 10, · So there are various possible effects due to natural disasters. This essay is going to describe some of them.
The first effect of a natural disaster is economical. Earthquakes, hurricanes and other disasters strike suddenly and lead to loss of property and businesses and that can have severe long-term economic consequences.
The Tsunami Ready Program, developed by NOAA’s National Weather Service, is designed to help cities, towns, counties, universities and other large sites in coastal areas reduce the potential for disastrous tsunami- related consequences. Essay consequences natural disasters. Online essay services vs traditional classes types of entertainment essay pdf download practice writing essay upsc exam sports and life essay light reliable essay writing companies hiring write about yourself essay green revolution.
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possible to predict most natural disasters and minimize their consequences, major . The issue of long-term effects of the Chernobyl disaster on civilians is very controversial.
The number of people whose lives were affected by the disaster is enormous. Over , people were resettled because of the disaster; millions lived and continue to live in the contaminated area.
Without a doubt, a natural disaster essay is a tough paper to write. Why? Well, to begin with, the topic itself isn’t that fun. It also requires thorough research.