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 language meaning harbour ("tsu", 津) and wave ("nami", 波). Although in Japanese tsunami is used for both the singular and plural, in English tsunamis is often used as the plural. The term was created by fishermen who returned to port to find the area surrounding their harbor devastated, although they had not been aware of any wave in the open water. Tsunami are common throughout Japanese history; approximately 195 events in Japan have been recorded.
2007-02-13 01:10:54
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answer #1
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answered by Mark N 2
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A tsunami (pronounced /tsÊËnÉËmi/ or /sÊËnÉËmi/) 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 language meaning harbour ("tsu", æ´¥) and wave ("nami", æ³¢). Although in Japanese tsunami is used for both the singular and plural, in English tsunamis is often used as the plural. The term was created by fishermen who returned to port to find the area surrounding their harbor devastated, although they had not been aware of any wave in the open water. Tsunami are common throughout Japanese history; approximately 195 events in Japan have been recorded.
A tsunami has a much smaller amplitude (wave height) offshore, and a very long wavelength (often hundreds of kilometers long), which is why they generally pass unnoticed at sea, forming only a passing "hump" in the ocean. Tsunami 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 are more familiar). Since they are not actually related to tides the term is considered misleading and its usage is discouraged by oceanographers. [1] Since not all tsunami occur in harbors, however, that term is equally misleading, although it does have the benefit of being misleading in a different lang
2007-02-15 09:18:55
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answer #2
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answered by raje 1
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A tsunami is a huge ocean wave that can travel at speeds up to 600 mi/hr (965 km/hr), hundreds of miles over open sea before it hits land. Sometimes incorrectly called a tidal wave, a tsunami is usually caused by an earthquake, volcanic eruption or coastal landslide.
Tsunami is Japanese for "harbor wave." It is, in fact, a series of waves which travel outward on the ocean surface in all directions in a kind of ripple effect. Since the waves can start out hundreds of miles long and only a few feet high, they would not necessarily be noticeable to a passing ship or a plane flying overhead.
As the waves get closer to shore, they decrease in speed and increase in height. They approach the coastline as a series of high and low water levels, approximately 10-45 minutes apart, with their speed decreasing to about 30-40 mi/hr (50-60 km/hr). The depth of the water and the layout of the coastal area can affect the tsunami's configuration when it hits the shore. ...
2007-02-13 09:12:39
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answer #3
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answered by Anonymous
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Tsunami is a huge wave coming out from the sea which got a devil name
2007-02-13 09:23:26
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answer #4
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answered by sujitha v 1
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simple explaination is a tidal wave caused by an under water earthquake. They frequent the Pacific rim where the fault lines and techtonic plates are which is how the eathquake happens (two plates colliding / sliding over each other) and the vibration causes waves, which rise as it gets closer to land.
Fill your tub full of water and slide your hand across the bottom, you'll get a good visual.
2007-02-13 09:13:13
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answer #5
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answered by Elrandor 1
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In simple terms, when there is an earthquake under the ocean it can cause a separation or hole in the Earth. Water then fills this hole very rapidly which causes the ocean to drop, which then causes massive waves (or tidal waves).
2007-02-13 09:29:00
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answer #6
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answered by Mr.Wise 6
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A tdal wave caused by an earthquake
2007-02-13 09:17:48
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answer #7
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answered by Anonymous
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a large destructive ocean wave caused by an underwater earthquake or some other movement of the earth’s surface
2007-02-13 09:11:42
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answer #8
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answered by Anonymous
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An ocean wave generated by a submarine earthquake, volcano or landslide. (Also known as a seismic seawave, and incorrectly as a tidal wave).
www.yourskinandsun.com/weatherg.html
2007-02-13 09:16:18
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answer #9
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answered by sushobhan 6
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tsumnami is a giant wave in oceans caused by earthquakes or volcanoes or etc.it can cause a lot of loss of life and property if it reaches the sea shore.eg.tsunami of december 26,2005
2007-02-13 09:59:32
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answer #10
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answered by yash SCHOLAR 1
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