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Tsunami - 26/12/04 - Causes, impact, and management

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Causes Introduction On the 26th of December at 06:48 Sri Lankan time(11:48) whilst most of the population were just going to sleep after a long Christmas day, one of the worlds largest recorded earthquake struck generating a tsunami which left the Indian ocean countries with more than 162,000 people dead and $675 million(U.S)of damages. The earthquake hit countries that were already troubled with poverty and debt leaving them in need of urgent help. World wide, people responded to help overcome this horrific disaster donating $450million and the British government donated a pledge of $96million. The word 'Tsunami' is a Japanese word with the English translation, "harbor wave." Represented by two characters, the top character, "tsu," means harbor, while the bottom character, "nami," means "wave." In the past, tsunamis were sometimes referred to as "tidal waves" by the general public though they are not actually related to tides. ...read more.


The tsunami then can extend up to more than 300 metres inland destroying most of what is in its path. Impact * By the end of the day more than 150,000 people were dead or missing and millions more homeless. * Earthquake led to a sequence of 15 quakes across the region of Andaman. * Travelled as much as 3,000 miles (nearly 5,000 kilometres) * The force of the tsunami killed people and destroyed property. * A tsunami wave less than a foot (30 centimetres) in height on the surface of the sea ocean, which went unnoticed by sailors. * Rapid surging of the ocean, more like an extremely powerful river or a flood than the advance and retreat of giant waves. * The Indian Ocean tsunami caused waves as high as 50 feet (15 meters) as it reached the coast * Hit eleven countries from Africa to Thailand * $675million(U.S) ...read more.


Earthquakes occur when any of the 12 or 13 tectonic plates collide at their boundaries. The present collision is due to compression between the Indian and Burmese plates. The initial eruption happened near the location of the meeting point of the Australian, Indian and Burmese plates. Scientists have shown that this is a region of compression as the Australian plate is rotating counterclockwise into the Indian plate. This means that the region of seismic activity has become extended extending in a region in the South Eastern Indian Ocean. Tsunamis are not entirely unknown in the Indian Ocean. Once the large amount of pent-up energy in the compression zones of the plate boundaries have been released, it takes another buildup of energy for another event of similar magnitude. This is unlikely in the short-term. Early warning is only one part of disaster risk management, disaster preparedness, vulnerability reduction and post-disaster relief and reconstruction. Location * Latitude 3.316, Longitude 95.855 * Off west coast of Sumatra south of India * North east Indian ocean ...read more.

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