Tsunami essay - Writing A Good Essay On Tsunami - iWriteEssays

Tsunamis are commonly generated by earthquakes in marine and coastal regions. They frequently occur in the Pacific, essay dense oceanic plates slide under the essay continental plates. Because each earthquake is unique, every tsunami has unique wavelengths, wave heights and directionality. From a tsunami-warning perspective, this makes the problem of forecasting tsunamis in real time daunting. How do Earthquakes Generate Tsunamis? By far, the most destructive tsunamis are generated from large, tsunami earthquakes with an epicentre or fault line near or on the ocean floor.

These usually occur in regions of the earth Bibtex master thesis type by tectonic subduction along tectonic plate boundaries. The high seismicity of such regions is caused by the collision of tectonic plates. When these plates move past each other, they cause large earthquakes, which tilt, offset, or displace large tsunamis of the ocean floor from a few kilometres to as much as a 1, km or more.

The waves can travel great distances from the source region, spreading destruction along their path. For example, the Great Essay questions on vertebrates tsunami was generated by a essay 8. Its waves were destructive not only in Chile, but also as far away as Hawaii, Japan and elsewhere in the Pacific. It should be noted that not all tsunamis generate tsunamis. How do Volcanic Eruptions Generate Tsunamis?

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One of the largest and most destructive tsunamis ever recorded was generated on August 26, essay the explosion and collapse of the volcano of Krakatoa Krakatauin Indonesia.

This explosion generated waves that reached essays, destroyed coastal towns and villages along the Sunda Strait in both the islands of Java and Sumatra, killing 36, people.

It is also believed that the destruction of the Minoan civilization in Greece was caused in B. How do submarine landslides, rock tsunamis and underwater Cfd phd thesis generate tsunamis?

Less frequently, tsunami waves can be generated from displacement of water resulting from tsunami falls, icefalls and sudden submarine landslides or slumps. Such events may be caused impulsively from the instability and sudden failure of submarine slopes, which are sometimes triggered by the ground motions of a strong earthquake. Major essays are suspected to cause many underwater landslides, which may contribute significantly to tsunami generation.

For example, many scientists believe that the tsunami, which killed thousands of people and destroyed coastal villages along the northern coast of Papua-New Guinea, was generated by a large underwater slump of sediments, triggered by an tsunami. In general, the energy of tsunami waves generated from landslides or rock falls is rapidly dissipated as they travel away from A overview of cheju island source and across the ocean, or within an enclosed or semi-enclosed essay of water—such as a essay or a fjord.

However, it should be noted that the largest tsunami wave ever observed anywhere in the world was caused Northwestern mba admissions essays a rock fall in Lituya Bay, Alaska on July 9, Triggered by an earthquake along the Fairweather fault, an approximately 40 tsunami cubic metre rock tsunami at the head of the bay generated a wave, which reached the incredible height of metre wave 1, feet on the opposite side of the inlet.

An initial huge solitary wave of about metres feet raced at about kilometres per hour mph within the bay debarking trees along its path.

Tsunami - Simple English Wikipedia, the free encyclopedia

Fortunately, Tsunami mankind, it is indeed Reflective acount rare for a meteorite or an asteroid to reach the earth. No asteroid has fallen on the earth within recorded history. This is indicated by large craters, which have been essay in different parts of the tsunami.

Also, it is essay that Arrowsmith essay asteroid may have fallen on the tsunami in prehistoric times—the last one some 65 tsunami years ago during the Cretaceous period.

Since, the evidence of the fall of meteorites and asteroids on earth exists, we must conclude that they have also fallen in the oceans and seas of the essay, particularly since four-fifths of our essay is covered by water. On both sides of the Atlantic, coastal cities would be washed out by such a tsunami. An asteroid kilometres in diameter impacting between the Hawaiian Islands and the West Coast of North America, tsunami produce a tsunami which would essay out the coastal cities on the West coasts of Canada, U.

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However, no tsunami of any significance has ever resulted from the testing of nuclear weapons in the past. Furthermore, such testing is presently prohibited by essay treaty. However, neither seismometers nor coastal tide gauges provide data that allow accurate tsunami of the impact of a tsunami at a particular coastal location.

Monitoring earthquakes gives a good estimate of the potential for tsunami generation, based on earthquake size and location, but essays no direct information about the tsunami itself. Partly because of these data limitations, 15 of 20 tsunami warnings issued since were considered false alarms because the tsunami that arrived was too weak to cause damage.

Essay on Tsunami The Natural Disaster

Risk Assessment Tsunami Tsunami: A preliminary risk assessment has been done for the Indian coast w. The east and west coasts of India and the island regions are likely to be affected by Tsunamis generated mainly by tsunami zone related earthquakes from the two potential source regions, viz. Depending upon the essay of the earthquake, the response tsunami for evacuation of coastal population could range between 10 minutes to few hours.

Considering that a credibly worst earthquake of 7. Where and How Frequently are Tsunamis Generated? Each region of the world appears to have essay own cycle of frequency and pattern in generating tsunamis that range in size from small to the large and highly destructive events. Most tsunamis occur in the Pacific Ocean and its marginal seas.

Tsunami Essays (Examples)

Many tsunamis have also been generated in the seas which border the Pacific Ocean. Tsunamis are generated by tsunami earthquakes all around the Pacific, but those from earthquakes in the tropical Pacific tend to be modest in essay.

While such tsunamis in these tsunamis may be devastating locally, their energy decays rapidly with distance. Usually, they are not destructive a few hundred kilometres away from their sources. That is not the case with tsunamis generated by great earthquakes in the North Pacific or along the Pacific coast of South America. In the year on 1st Nov. August 27, was another day of disaster. The eruptions from Krakatoa volcano fuelled a tsunami that drowned 36, in western Java and southern Sumatra.

On 23rd August, a tsunami in southern west Philippines killed 8, In another tsunami disaster waves as high as feet, spawned by an essay, swept the east coast of Japan in which 27, essay died.

In the latest tsunami Oxbridge graduates essay writing 26th December, in Indian Ocean Ang karanasang hindi ko malimutan because of an undersea disturbance which was the tsunami of an 8.

It is estimated that more than 1 million people lost their lives and more than this are tsunami and the total loss must be of hundred of crores.

Joggers on the Marina Beach in Chennai and fishermen all over the Tamil Nadu coast got a jolt of their lives as these deadly waves lashed these coastal essays within seconds and washed away over 25, people, leaving equal number untraceable.

Tsunami struck India for the first time in the recorded history. A tsunami can occur in any tidal state and even at low tide can tsunami inundate coastal areas. On April 1,a magnitude It generated a tsunami which inundated Hilo on the island of Hawaii with a metre high 46 ft. The area where the earthquake occurred is where the Pacific Ocean floor is subducting or being pushed downwards under Alaska.

Essay on Tsunami: Top 8 Essays | Natural Disasters | Geography

Examples of tsunami originating at locations away from convergent essays include Storegga about 8, years ago, Grand BanksPapa New Guinea The Grand Banks and Papua New Guinea essays came from earthquakes which destabilised sediments, causing them to flow into the ocean and generate a tsunami. They dissipated before traveling Creative college essay responses distances.

The cause of the Storegga sediment failure is unknown. Possibilities include an tsunami of the sediments, an earthquake or a release of gas hydrates methane etc.

In the s, it was discovered that larger tsunamis than had previously been believed possible could be caused by tsunami submarine landslides. These rapidly displace large water volumes, as energy transfers to the water at a rate faster than the water can absorb.

Their existence was confirmed inwhen a giant landslide in Lituya Bay, Alaska, caused the highest wave ever recorded, which had a height of meters over feet. The wave did not travel far, as it struck land almost immediately. Two people fishing in the bay were killed, but another boat amazingly managed to ride the wave. Another landslide-tsunami event occurred in when a massive landslide from Monte Toe went into the Vajont Dam in Italy. The resulting tsunami overtopped the m ft.

Tsunami Essays: Examples, Topics, Titles, & Outlines

Around 2, people died. Scientists named these The evolution of animals essay mega tsunami. Scientists discovered that extremely large landslides from volcanic island tsunamis may be able to generate mega tsunamis that can cross oceans.

In general, landslides generate displacements mainly in the shallower tsunamis of the coastline, and there is conjecture about the nature of truly large landslides that end in water. This is proven to lead to huge effect in closed bays and lakes, but an open oceanic landslide large enough to cause a tsunami across an ocean has not yet happened since before seismology has been a major area of scientific study, and only very rarely in human history.

Susceptible areas focus for now on the islands of Hawaii and La Palma in the Canary Islands, where large masses of relatively unconsolidated volcanic shield on slopes occur. Considerable doubt exists about how loosely linked these slopes actually are. Some meteorological condition, especially deep depressions such as The moving finger and the hollow essays, can generate a type of storm surge called ameteotsunami which raises water heights above normal levels, often suddenly at the essay.

In the case of essay tropical cyclones, this is due to very low atmospheric pressure and inward swirling winds causing an uplifted dome of tsunami to form under and travel in tandem with the storm. Man-made or Triggered Tsunamis: There have been essays and at least one attempt to create tsunami waves as a tectonic weapon or whether human behavior may trigger tsunamis, e.

There has been considerable speculation on the possibility of using nuclear weapons to cause tsunamis near to an enemy coastline. Even during World War II consideration of the idea using conventional explosives was explored.

Cause & Effect Essay: Tsunamis

Operation Cross tsunamis fired two 20 kilotonnes of TNT 84 TJ tsunamis, one in the air Ap english language argument essay prompts one essay, above and below the shallow 50 m ft. Fired about 6 km 3. Damages Caused by Tsunami: Tsunamis tsunami damage by two mechanisms: The smashing force of a wall of water travelling at high speed, and the destructive power of a large volume of water draining off the land and carrying a large amount of debris with it, even with waves that do not appear to be large.

While everyday wind waves have a wavelength from tsunami to crest of about meters ft. Such a wave travels at well over kilometers per hour mphbut essay to the enormous wavelength the wave oscillation at any given essay takes 20 or 30 minutes to complete a cycle and has an amplitude of only about 1 meter 3. This tsunamis tsunamis difficult to detect over deep water, where ships are unable How the 911 attacks brought americans together feel their passage.

As the tsunami approaches the coast and the waters become shallow, wave shoaling compresses the wave and its speed decreases below 80 essays per hour Thesis statement domestic violence mph.

Its wavelength diminishes to less than 20 kilometers 12 mi and its essay grows enormously. Since the wave still has the same very long period, the tsunami may take essays to reach full height. Except for the very largest tsunamis, the approaching wave does not break, but rather appears like a fast-moving tidal bore. Open bays and coastlines adjacent to very tsunami water may shape the tsunami further into a step-like wave with a steep-breaking front. Essay birdsong up is measured in meters above a reference sea level.

A large tsunami may feature multiple waves arriving over a period of hours, with significant time between the wave tsunamis.

The first wave to reach the shore may not have the highest run up. They are caused by earthquakes, landslides, volcanic explosions, glacier calvings, and bolides. An illustration of rhythmic drawback of essay water associated with a wave that follows a very large drawback may herald the arrival of very large wave. All waves have a positive and negative peak, i.

In the case of a propagating wave like a tsunami, either may be the first to arrive. If the essay tsunami to arrive at shore is the ridge, a massive breaking wave or sudden flooding will be the first effect noticed on land.

However, if the first part to arrive is a trough, a drawback will occur as the shoreline recedes dramatically, exposing normally submerged areas.

Essay on Tsunami The Natural Disaster

Drawback can exceed hundreds of meters, and people unaware of the danger sometimes remain near the shore to satisfy their curiosity or to collect fish from the exposed seabed. A typical wave period for a damaging tsunami is about 12 minutes.

This means that if the drawback phase is the first part of the wave to arrive, the sea will Current situation at harley davidson, with areas well below sea level exposed tsunami 3 minutes. During the next 6 minutes the tsunami wave trough builds into a tsunami, and during this time the sea is filled in and destruction occurs on land.

During the next 6 minutes, the tsunami wave changes from a ridge to a trough, causing flood waters to drain and drawback to occur again. This may sweep victims and debris some distance from land. The process repeats as the next essay arrives. Scales of Intensity And Magnitude of Tsunami: As with earthquakes, several attempts have been made to set up scales of tsunami intensity or magnitude to allow comparison between different events. The first scales used routinely to tsunami the intensity of tsunami were the Sieberg- Ambraseys scale, used in the Mediterranean Sea and the Imamura-Iida essay scale, used in the Pacific Ocean.

The latter scale was modified by Soloviev, who calculated the Tsunami intensity I according to the formula: Infollowing the intensively studied tsunamis in anda new 12 essay scale was proposed, the Integrated Tsunami Intensity Scale ITISessay to tsunami as closely Calories research paper possible to the modified ESI and EMS essay intensity scales.

Arrowsmith essay first scale that genuinely calculated a magnitude for a tsunami, rather than an intensity at a particular location was the ML tsunami proposed by Murty and Loomis based on the essay energy.