Earthquake Natural Disaster Essay
Essay on the Five Important Types of Natural Disaster
Essay on the Five Important Types of Natural Disaster! A natural disaster is any natural phenomenon which causes such widespread human material or environmental losses that the stricken community cannot recover without external assistance. Examples include earthquakes, cyclones, storms, floods ...
Earthquake Natural Disaster Essay
Revamping of the civil defence set-up to strengthen local efforts for disaster preparedness and effective response. It was triggered by the most powerful earthquake recorded in the past four decadesone whose magnitude was 8. Tsunamis are shallow-water waves different from the wind-generated waves which usually have a period of five to twenty seconds which refers to the time between two successional waves of about 100 to 200 metres.
For example, even though it is known that this intense seismic activity is a result of the north-northeastern movement and under thrusting of the indian plate, it is not known what fraction of the strain energy is being released by earthquakes along the belt. A comprehensive human resource plan for disaster management was developed. During a quake, the rubber absorbs the shocks.
Based on seismic data and different geological and geophysical parameters, the bureau of indian standards (bis) had initially divided the country into five seismic zones. In the ocean, the tsunami wave may only be a few inches high (typically 30-60 cm), but as they race onto shallow water regions their speed diminishes which results in increase in the height of the wave. Arunachal pradesh, goa, gujarat, himachal pradesh, kerala, mizoram, puducherry, punjab and uttar pradesh have constituted state disaster management authorities (sdmas).
The eye has an average radius of 20 to 30 km. The disaster management act, 2005 was enacted for establishing requisite institutional mechanisms for drawing up and monitoring the implementation of disaster management plans, and for undertaking a holistic, coordinated, and prompt response to any disaster situation. The ripples then race outward and a tsunami is caused.
Consequently in order to save the dam, unscheduled and panic releases of water are resorted to often without giving adequate warning to people downstream who live in the path of the released water. The warning of an oncoming tsunami cannot be obtained by merely detecting an earthquake in the seas it involves a number of complex steps which have to be completed in a systematic and quick fashion. For measurement of the intensity of an earthquake, the modified mercalli intensity scale is used.
The aggregate rainfall received by the country as a whole during the years monsoon season from june to september 2002, at 735. Tsunamis may reach a maximum vertical height onshore above sea level of 30 metres. Each day there are about 1,000 very small earthquakes measuring 1 to 2 on the richter scale. The theory of plate tectonics offers a comprehensive explanation for several geological phenomena continental drift, mountain building and volcanism, and, of course, earthquake. Storm surge (rise of sea level) of four metres are common.
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Earthquake Natural Disaster Essay
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Earthquake Natural Disaster Essay
But then gravity acts to return the sea surface to its original shape. Evacuating the population just 24 hours before would require an army of high speed boats, an unfeasible proposition for a resourcepoor country.
Kutch was facing drinking water and fodder scarcity. The indian ocean is not prone to tsunamis.
As 90 per cent of the deaths in severe cyclones all over the world occur in high storm surges accompanying them, Indonesia, sri lanka, india, malaysia, maldives, myanmar, bangladesh and somalia bore the brunt of the disaster that killed over 55.
This assumes that the earth stations at the two ends are suitably located to remain unaffected. Fire services also strengthened and modernised to a multi-hazard response force.
Tsunamis behave as shallow-water waves because of their long wavelengths. This mobile jigsaw puzzle is what is termed as the continental drift, which results in the formation of mountains, midoceanic ridges, ocean trenches, volcanoes and seismic energy buildup.
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Zone iv which is the next most active region of seismic activity covers sikkim, delhi, remaining parts of jammu and kashmir, himachal pradesh, bihar, northern parts of uttar pradesh and west bengal, parts of gujarat and small portions of maharashtra near the west coast. Whenever flooding level is higher than what the structure can hold, the result is devastating. Obviously, that would be trading one disaster for an even greater one. The use of radar for the precipitation estimate is based on the principle that the amount of echo return from a volume of cloud depends on the number and size of hydrometeros in it. This mobile jigsaw puzzle is what is termed as the continental drift, which results in the formation of mountains, midoceanic ridges, ocean trenches, volcanoes and seismic energy buildup.
This website includes study notes, research papers, essays, articles and other allied information submitted by visitors like you. The bureau of indian standards issued building codes for construction of different types of buildings in different seismic zones in india. The floods in bihar in 2008 were one of the worst the country has seen. 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 100 km or so. Going beyond the historical focus on relief and rehabilitation after the catastrophe, there is a need to look ahead and plan for disaster preparedness and mitigation.
From the record, called a seismogram, it is possible to find out how strong the quake was, where it began and how long it lasted. However, the system is limited to one way communication only. The obvious solution, therefore, would be to provide a large number of storm shelters in the particularly vulnerable areas. The time it needed to issue a warning has fallen from up to 90 minutes some six years ago to 25 minutes or even less today. Some measures to prevent building collapse during the earthquake are symmetry and rectangularity of building symmetry in locating openings simplicity in elevation or avoidance of ornamentation intersecting internal walls so as to divide the total plan in square enclosures of not more than 6 m wide use of steel or wooden dowels going into walls meeting at corners (shear walls) or t-junctions to provide effective bonding use of bond beam or band of reinforced concrete at lintel levels of openings and serving as lintel too. Earthquakes can be very deep and in such cases surface damage may be less. One approach is to predict earthquakes on the basis of changes believed or known to precede an earthquake. So inured are we to the annual phenomena of floods in season, that one more village practically washed away by a flash flood causes no more than a ripple. It includes the epicentres of the alpine mountains and their offshoots in europe, mediterranean sea, northern africa, eastern africa, himalayan mountains and burmese hills. Use of existing police vhfuhf link can be made.The next full-margin rupture of the Cascadia subduction zone will spell the worst natural disaster in the history of the continent.
515 words essay on The Natural CalamitiesFree sample essay on The Natural Calamities. In recent years natural calamities have taken a heavy toll of lives and this is something quite shocking. Earthquakes, tsunami and floods batter some islands like Indonesia again and again. As waves rise to some meters people walking by the side of the ...
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The plan devoted a separate article to disaster management and made a number of important prescriptions to mainstream disaster risk reduction into the process of development. If the terrain is shallow and shaped like a funnel, like that of bangladeshmuch of the exposed land is just about at the mean sea level or even lessstorm surges get enormously amplified. The population density in some of the coastal districts is as high as 670 persons per square km. For measurement of the intensity of an earthquake, the modified mercalli intensity scale is used. Aftershocks are generally not as strong in magnitude as the initial tremor.
In 2003, however, bis redefined the seismic map of india by merging zones i and ii Buy now Earthquake Natural Disaster Essay
As with most natural disasters, in this one too, man had a role to play. As a tsunami leaves deep waters and propagates into the shallow waters, it transforms. The ripples then race outward and a tsunami is caused. Furthermore, because the intensity of shaking varies from one place to another during an earthquake, different mercalli ratings can be given for the same earthquake. This has an adverse impact on the development of the state.
Cyclones have a devastating effect on the economy and lives of the people in the affected districts. The andaman and nicobar islands may have moved by about 1. When earthquakes push the seafloor upward, lowering local sea level, the corals cannot grow upward and grew outward instead, a major indication Earthquake Natural Disaster Essay Buy now
In most cases flooding is caused by a river over-spilling its banks due to (a) excessive precipitation, (b) obstruction in the river bed, (c) inadequate waterways at railroad crossings, (d) drainage congestion, and (e) change in river course. Violations of coastal regulation zone rules, development on green and no- development zones, building on areas marked for parks and open spaces all of this ensured that what little open space the city now had was not enough to absorb heavy rain. A great earthquake in an uninhabited or virtually uninhabited area will be less damaging than a large earthquake in a highly populated area. Experience has shown that it remains completely unaffected under the severest cyclonic condition Buy Earthquake Natural Disaster Essay at a discount
The entire north-eastern region falls in zone v. The evacuation of people is difficult in flat coastal districts as in bangladesh where the tides of six to 10 metres above the sea level submerges offshore islands and travels inland for considerable distances. The siltation level of dams, which has generally been underestimated at the time of construction has had to be revised by 50 to 400 per cent in some cases. Sometimes called the ring of fire, its epicentre are the coastal margins of north and south america and east asia. The convective instability builds up into an organised system with high-speed winds circulating around the low pressure interior.
Policy guidelines at macro level to inform and guide the preparation and implementation of development plans-across sectors Buy Online Earthquake Natural Disaster Essay
Earlier, it used to be done by a conventional methodgauge to gauge or discharge correlation by which future gauges at forecast points are estimated on the basis of gauge discharge observed at some upstream station. The richter scale has been immensely modified and upgraded since it was introduced. For example, after an extremely active cycle from 1934 to 1951, with 14 earthquakes of magnitude greater than 7. The various types available for dissemination of disaster warning as well as arranging mitigation are (a) land line links (b) underground cable links (c) wireless links (d) microwave (los) and (e) satellite links. Mainstreaming disaster reduction into already approved projects in sectors of education, housing, infrastructure, urban development, and the like Buy Earthquake Natural Disaster Essay Online at a discount
Greater the vertical displacement, greater will be the wave size. Compared to the pre- monsoon season of may, june, when severe storms are rare, the months of october and november are known for severe cyclones. However, strong ones last only a few days. Since p waves travel at a speed of about 8 km per second and s waves at 5 km per second, it is possible to compute the distance of their origin from the seismic record. Tsunamis are usually a result of earthquakes, but may be at times caused by landslides or volcanic eruption or, very rarely, a large meteorite impact on the ocean.
The slowest earthquake waves are the long, or l, waves which cause the most extensive damage as they move along the earths surface Earthquake Natural Disaster Essay For Sale
While tides are caused by gravitational influences of the moon, sun and the planets, tsunamis are seismic sea waves. Long rooms having long walls unsupported by cross-walls. Vast areas of the country do not have telephone telegraph links. It includes the epicentres of the alpine mountains and their offshoots in europe, mediterranean sea, northern africa, eastern africa, himalayan mountains and burmese hills. Dart-type gauges will be installed by the government and it will join 26 countries in a network that warn each other about tsunamis.
Again, a marine volcanic eruption can generate an impulsive force that displaces the water column and gives birth to a tsunami. The advantage of using radars for hydrological work lies in the fact that the information over the inaccessible region is available without actual human intervention For Sale Earthquake Natural Disaster Essay
Design of school buildings under the programme would include hazard resistant features, in multi-hazard prone (earthquake, cyclone, flood), high-risk areas. Since p waves travel at a speed of about 8 km per second and s waves at 5 km per second, it is possible to compute the distance of their origin from the seismic record. Implementation of the national programme for capacity building of engineers in earthquake risk management to train 10,000 engineers and 10,000 architects on safe construction techniques and architectural practices. Interestingly, the frequency of tropical cyclones is the least in the north indian ocean regions of the bay of bengal and the arabian sea they are also of moderate intensities Sale Earthquake Natural Disaster Essay
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