Tsunamis A tsunami is a series of waves created when a body of water‚ such as an ocean‚ is rapidly displaced on a massive scale. Earthquakes‚ mass movements above or below water‚ volcanic eruptions and other underwater explosions‚ landslides‚ large meteorite impacts and testing with nuclear weapons at sea all have the potential to generate a tsunami. The effects of a tsunami can range from unnoticeable to devastating. The term tsunami comes from the Japanese words(津波、つなみ) meaning harbor ("tsu"‚
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event in the deep ocean; it simply has a much smaller amplitude (wave heights) offshore‚ and a very long wavelength (often hundreds of kilometres long)‚ which is why they generally pass unnoticed at sea‚ forming only a passing "hump" in the ocean. Tsunamis have been historically referred to as tidal waves because as they approach land they take on the characteristics of a violent onrushing tide rather than the sort of cresting waves that are formed by wind action upon the ocean (with which people
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Maldives were devastated in the 26 December tsunami. © Sena Vidanagama/AFP/Getty Images 76 77 NATIONAL RAPID ENVIRONMENTAL ASSESSMENT - THE MALDIVES 5. 5.1 NATIONAL RAPID ENVIRONMENTAL ASSESSMENT – THE MALDIVES Introduction The Indian Ocean tsunami reached the Maldives at 9:20 a.m. local time‚ approximately three hours after tremors were felt. Tidal waves ranging between one and five metres high were reported in all parts of the country. The force of the waves caused widespread infrastructure
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Case Study of the Indian Ocean Tsunami On December 26‚ 2004‚ the Indian Ocean earthquake‚ or the Sumatra-Andaman earthquake‚ caused a tsunami that killed 230‚000 people and was recorded as the deadliest tsunami in known history. The earthquake was recorded as between 9.1 and 9.3 on the Richter scale‚ the second largest earthquake ever recorded. It was also recorded as the longest one‚ triggering earthquakes as far away as Alaska. Following the disaster‚ a worldwide effort raised billions of dollars
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............ 10 Indian Ocean tsunami‚ December 26‚ 2004.......................... 13 Papua New Guinea tsunami 17 July 1998 ............................. 20 Chile tsunami 27 February 2010 On the 27 February 2010 an earthquake occurred in the Pacific Ocean 115 kilometres north‚ north east of Concepcion. The quake measured 8.8 on the Richter scale and triggered a devastating tsunami. The epicentre of this earthquake was about 279 kilometres north of the largest earthquake ever recorded (9
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INTRODUCTION The 2004 Indian Ocean earthquake was an undersea mega thrust earthquake that occurred at 00:58:53 UTC on Sunday‚ December 26‚ 2004‚ with an epicentre off the west coast of Sumatra‚ Indonesia. The quake itself is known by the scientific community as the Sumatra-Andaman earthquake.[3][4] The resulting tsunami is given various names‚ including the 2004 Indian Ocean tsunami‚ Asian Tsunami‚ Indonesian Tsunami. CAUSES The earthquake was caused by subduction and triggered a series of devastating
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2010 Chile earthquake From Wikipedia‚ the free encyclopedia For other earthquakes in and about Chile during 2010‚ see List of earthquakes in Chile occurring in 2010. 2010 Chile earthquake Epicenter of the 2010 Chile earthquake Date 27 February 2010[1] Origin time 03:34 CST (UTC-03:00) Magnitude 8.8 Mw Depth 35 kilometres (22 mi)[2] or 30.1 kilometres (19 mi)[1] Epicenter 35.909°S 72.733°WCoordinates: 35.909°S 72.733°W[2] or 36.290°S 73.239°W[1] Countries or regions Chile Max. intensity
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The cause of the tsunami in Sumatra on 26 December 2004 which affected the entire Indian Ocean was a very violent earthquake of magnitude 9.3 on the Richter scale. It was the biggest earthquake ever recorded after the one in Chile on 22 May 1960‚ with a magnitude of 9.5. It originated at 00:58:53 GMT (7:58:53 AM local time)‚ on a fault in a subduction area between the Indo-Australian plate and the Burma plate (which forms part of the larger Eurasian plate (see fig. 1)‚ with the hypocenter at a depth
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2004 Boxing Day Tsunami | Source 1 | Source 2 | Source 3 | Source 4 | Name of Topic | Tsunami Flash | The Tsunami Page | The Boxing Day 2006 Tsunami | 2004 Tsunami Disaster | Name of Author | The Age | Dr George P.C | Phil Cummins | Matthew Clieok | Address | http://www.theage.com.au/tsunamiflash/ | http://www.drgeorgepc.com/Tsunami2004Indonesia.html | http://www.ga.gov.au/ausgeonews/ausgeonews200503/tsunami.jsp | http://www.ciolek.com/WWWVLPages/AsiaPages/Tsunami-Analyses.html | Notes
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2011 Great East Japan Earthquake and tsunami Introduction The 2011 Tōhoku earthquake‚ also known as the Great East Japan Earthquake‚[6][7](Japanese: "Eastern Japan Great Earthquake Disaster" was a magnitude 9.0 (Mw) undersea megathrust earthquake off the coast of Japan that occurred on Friday‚ 11 March 2011 It was the most powerful known earthquake to have hit Japan‚ and one of the five most powerful earthquakes in the world overall since modern record-keeping began in 1900. In addition to loss
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