THE TSUNAMI ENGLISH PROJECT H.h.w part 2 for this computer.pptx

THE TSUNAMI ENGLISH PROJECT H.h.w part 2 for this computer.pptx

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  Project: The Tsunamis English Project DivyanshiPatel 8th c
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  Tsunami  A tsunamiis a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations, landslides, glacier calving, meteorite impacts and other disturbances) above or below water all have the potential to generate a tsunami.[6] Unlike normal ocean waves, which are generated by wind, or tides, which are generated by the gravitational pull of the Moon and the Sun, a tsunami is generated by the displacement of water by a large event.
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  Tsunami Causes… Tsunamis canbe generated when the sea floor abruptly deforms and vertically displaces the overlying water. Tectonic earthquakes are a particular kind of earthquake that are associated with the Earth's crustal deformation; when these earthquakes occur beneath the sea, the water above the deformed area is displaced from its equilibrium position. More specifically, a tsunami can be generated when thrust faults associated with convergent or destructive plate boundaries move abruptly, resulting in water displacement, owing to the vertical component of movement involved. Movement on normal (extensional) faults can also cause displacement of the seabed, but only the largest of such events (typically related to flexure in the outer trench swell) cause enough displacement to give rise to a significant tsunami, such as the 1977 Sumba and 1933 Sanriku events.
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  Images Of the tectonic plateshifting • Over-riding plate bulges under strain, cau • Plate slips, causing subsidence and releasing energy into water. • The energy released produce
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  Causes… Tsunamis have asmall wave height offshore, and a very long wavelength (often hundreds of kilometres long, whereas normal ocean waves have a wavelength of only 30 or 40 metres),which is why they generally pass unnoticed at sea, forming only a slight swell usually about 300 millimetres (12 in) above the normal sea surface. They grow in height when they reach shallower water, in a wave shoaling process described below. A tsunami can occur in any tidal state and even at low tide can still inundate coastal areas.
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  History The History ofTsunami The highest ever recorded tsunami was on 9th July 1958 in the record books. It took place in a bay which was located in the ligula bay along the coasts of Alaska. After the quake, a massive mass of rock fell into the bay waters from the cliff nearby. Thus, this created an impact and produced a wave that reached a height of 524 meters. Also, this is regarded as one of the highest recorded tsunami waves ever. The destructive waves responsible for the occurrence of tsunami is also produced in waters of bays or lakes. As this water approached the coast, it grows larger. However, the size of this wave is very low in deep-sea areas. Tsunami waves that are generated in the lakes or bays do not travel for a long distance. Thus, they are not as destructive as the ones produced in the ocean waters. There are various directions in which tsunami can travel from the main point. One similar devastating tsunami was experienced in India in 2004. However, the origin of this tsunami was located near Indonesia. Because of the tsunami, it was expected that a total of 2 lakh people lost their lives. The waves traveled extensively thousands of kilometers in countries like Thailand, India, Indonesia, Sri Lanka, Bangladesh, and the Maldives. Tsunamis occur mainly in the Pacific Ocean. There are very chances that they take place in the area where there are larger bodies. Coastlines and open bays next to very deep waters may help tsunami further into a step-like wave.
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  Most damaging Tsunami’sever recorded: There are many examples of destructive tsunamis that have affected lives of many, many people. Some of the most famous are North Pacific Coast, Japan (Earthquake Magnitude: 9.0, Depth: 24.4km, Casualties: 18,000) Lisbon, Portugal (Earthquake Magnitude: 8.5, Casualties: 60,000). These are just a few example But a very prime example of how dangerous and destructive a tsunami could possibly be, is the 2004 Sumatra Indonesia tsunami. The 2004 Sumatra Indonesia tsunami is the most destructive and damaging tsunami to have ever occurred with a magnitude of 9.1 earthquake near the coast lines of Sumatra, island in Indonesia, it had caused the most disastrous tsunami of all time, with 50 meters, in height, it took over 230,000 lives over the 15 countries it affected. It was a very unfortunate event that had occurred and affected the lives of many, many people. Destruction..
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  On 26th ofDecember 2004, a very powerful and impactful earthquake had occurred under the sea, near the coast of the Sumatra island, Indonesia, which triggered the 2004 Indian Ocean Tsunami (Boxing day Tsunami). A magnitude of 9.1 earthquake had been detected near the Indian – Australian tectonic plate. This earthquake had affected the ocean depth levels and in within 20 minutes, the risen waves hit the shoreline, which killed over 100,000 people and causing the city to pound into rubble. Then progress of these tsunamis soon affected the coastlines of Thailand, India, Sri Lanka affecting and/or killing thousands of people. Eight hours after the initiations of the Tsunami, the tsunami started to affect countries out of the Asian epicenter, i.e. South Africa. After the tsunami’s progression throughout the countries. The tsunami claimed 230,000 lives, making this tsunami one of the most deadliest and destructive natural disaster ever recorded. Destruction..
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  Ever since the2004 tsunamis, government and administrations have prioritized natural disasters. Only a couple of weeks after the tsunami, many representatives of approximately 168 nations settled and agreed to the Hyogo Framework for Action (a policy that helps the world from natural hazards.) which helped create a pathway for global agreement that help disaster risk decrease. The disaster of the tsunami disrupted many people in their normal lives, their social lives, and this creates chaos in the social implications on someone’s lives. There are many people that this tsunami devastating even affected: Social Implications…..
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  The Help ofModern Research The modern Researchers/Scientist have really helped the society, from using statistics from previous tsunami’s, scientist and researchers have build infostructure for safety and well being. Scientist have worked very hard to put in measure in most vulnerable places on the world. Scientist over the world have attempted to understand where and how the tsunami might be triggered, so they use multiple different tools to detect any activity of tsunami occurrence. Scientist over the countries have cooperated and created safety measures like: Creating Tsunami proof buildings in most likely occurrence countries. Organizations have been formed to inform endangered countries for procedures in an act of tsunami devastations. Scientists have developed forecasting and prediction equipment to help indicate tsunamis. Help of Modern Tech (In natural calamities)…
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  Images
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  THANKYOU… Made by :Divyanshi Patel Teacher : Mrs. Shalini Shukla