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Tsunami Tsunami are also known as tidal waves, although they have nothing to do with the tide, and are sometimes called seismic sea waves. Mega Tsunami: Wave of Destruction is the script of a BBC TV Horizon program on the famous tsunami that hit Lituya Bay, and the possibility that the east coast of america could be hit by something similar. Tsunami from Asteroid Impacts is a large document reporting on a scientific study of what might happen if an asteroid hits the sea. www.sky-web.pwp.blueyonder.co.uk /wwa/tsunami.htm   (1568 words)

Tsunami- EnchantedLearning.com Tsunamis are caused by an underwater earthquake, a volcanic eruption, an sub-marine rockslide, or, more rarely, by an asteroid or meteoroid crashing into in the water from space. Many tsunamis could be detected before they hit land, and the loss of life could be minimized, with the use of modern technology, including seismographs (which detect earthquakes), computerized offshore buoys that can measure changes in wave height, and a system of sirens on the beach to alert people of potential tsunami danger. As a tsunami wave approaches the coast (where the sea becomes shallow), the trough (bottom) of a wave hits the beach floor, causing the wave to slow down, to increase in height (the amplitude is magnified many times) and to decrease in wavelength (the distance from crest to crest). www.enchantedlearning.com /subjects/tsunami   (846 words)

Tsunami - MSN Encarta Tsunamis can be generated by an undersea earthquake, an undersea landslide, the eruption of an undersea volcano, or by the force of an asteroid crashing into the ocean. Tsunamis should not be confused with storm surges, which are domes of water that rise underneath hurricanes or cyclones and cause extensive coastal flooding when the storms reach land. The worst tsunami disaster in history occurred in December 2004 when a magnitude 9.0 undersea earthquake, centered in the Indian Ocean off the northwestern coast of the Indonesian island of Sumatra, generated a tsunami that struck the coasts of 14 countries from Southeast Asia to northeastern Africa. encarta.msn.com /encyclopedia_761559898/Tsunami.html   (1173 words)

Tsunami - Wikipedia, the free encyclopedia The tsunami that struck Malé in the Maldives on December 26, 2004. 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 are more familiar). The aftermath of the tsunami that struck Newfoundland in 1929. en.wikipedia.org /wiki/Tsunami   (5259 words)

2004 Indian Ocean earthquake - Wikipedia, the free encyclopedia The tsunami caused by the December 26, 2004 earthquake strikes Ao Nang, Thailand. Tsunamis are much more frequent in the Pacific Ocean because of earthquakes in the "Ring of Fire", and an effective tsunami warning system has long been in place there. In what may be the most significant positive result of the tsunami, the widespread devastation led the main rebel group GAM to declare a cease-fire on December 28, 2004, followed by the Indonesian government, and the two groups resumed long-stalled peace talks, which resulted in a peace agreement signed August 15, 2005. en.wikipedia.org /wiki/2004_Indian_Ocean_earthquake   (6741 words)

[No title]   (Site not responding. Last check: ) Tsunami (津波 Japanese big wave in port), often incorrectly called a tidal wave, is a series of massive waves that occur after an earthquake, seaquake, volcanic activity, slumpss, or meteorite impacts in or near the sea. Since the constant energy of the tsunami is defined by height and speed, its height increases once its speed is reduced where the wave approaches land. A tsunami would be predicted by various seismologic institutes around the world and the progress monitored by satellites. www.wikiwhat.com /encyclopedia/t/ts/tsunami.html   (167 words)

July 2006 Java earthquake - Wikipedia, the free encyclopedia The tsunami smashed into a 110-mile stretch of Java’s coastline that was unaffected by the devastating 2004 Indian Ocean tsunami. The tsunami struck the southern Indonesian coastal villages of Cipatujah and Pangandaran on the coast southeast of Bandung and Garut A mere 60 cm tsunami was recorded at the Bureau of Meteorology’s tide gauge on the island. en.wikipedia.org /wiki/July_2006_Java_earthquake   (1081 words)

FEMA For Kids: Tsunami tsunami (pronounced soo-nahm-ee) is a series of huge waves that happen after an undersea disturbance, such as an earthquake or volcano eruption. (Tsunami is from the Japanese word for harbor wave.) The waves travel in all directions from the area of disturbance, much like the ripples that happen after throwing a rock. When a tsunami is recorded, the center tracks it and issues a warning when needed. www.fema.gov /kids/tsunami.htm   (245 words)

Tsunami Tsunami have also been called "tidal waves", but this term should not be used because they are not in any way related to the tides of the Earth. Earthquakes cause tsunami by causing a disturbance of the seafloor. Like all warning systems, the effectiveness of tsunami early warning depends strongly on local authority's ability to determine that their is a danger, their ability to disseminate the information to those potentially affected, and on the education of the public to heed the warnings and remove themselves from the area. www.tulane.edu /~sanelson/geol204/tsunami.htm   (3302 words)

USGS Photo Glossary: Tsunami Tsunami are sometimes referred to as "tidal waves" and "seismic sea waves." The term "tidal wave" is a misnomer. The impact of a tsunami upon a coastline is partially dependent upon the tidal level at the time it strikes, but it's generation is unrelated to ocean tides. Tsunami may go unnoticed by ships on the open ocean, but as they approach land and the water shallows, they can grow to great heights and rush far inland. volcanoes.usgs.gov /Products/Pglossary/tsunami.html   (420 words)

Howstuffworks "How Tsunamis Work" A tsunami is a wave or series of waves in the ocean that can be hundreds of miles long and have been known to reach heights of up to 34 ft (10.5 m). Tsunamis and normal waves have all of the same parts and are measured in the same ways, but there are many differences between the two. The earthquake that generated the December 26, 2004, tsunami in the Indian Ocean was a 9.0 on the Richter scale -- one of the biggest in recorded history. science.howstuffworks.com /tsunami.htm   (1152 words)

Pacific Tsunami Museum FAQ's   (Site not responding. Last check: ) Oceanographers often refer to tsunamis as seismic sea waves as they are usually the result of a sudden rise or fall of a section of the earth's crust under or near the ocean. The magnitude of the disturbance causing the tsunami is the primary factor influencing the size and strength of the waves. When a seiche is generated by a tsunami, subsequent tsunami waves may arrive in unison with a seiche resulting in an increase in the drawdown in sea level and a dramatic increase in wave height. www.tsunami.org /faq.htm   (3844 words)

BBC - Science & Nature - Tsunami The Squire family in Sri Lanka were witnesses to how the tsunami struck that country in a series of monster waves one after another. It examines how the unpredictable behaviour of the wave meant that some places that should have been destroyed were spared, while other places that should have been safe were shattered. It shows how the tsunami hit different countries in different ways, giving some people warning and others no chance at all. www.bbc.co.uk /sn/tvradio/programmes/tsunami/programme.shtml   (332 words)

Indian Ocean Earthquake and Tsunami A tsunami (1) was triggered by this earthquake in the Bay of Bengal. Tsunamis are impulsively generated sea waves by a disturbance at or near the ocean. Tsunami run-up is the vertical distance between the maximum height reached by the water on shore and the mean-sea-level surface. iri.columbia.edu /~lareef/tsunami   (6942 words)

California Seismic Safety Commission   (Site not responding. Last check: ) A tsunami is a sea wave, (more precisely, a series of waves), of local or distant origin that results from large-scale seafloor displacements associated with large earthquakes, major submarine slides, or exploding volcanic islands. A tsunami can be caused by a sudden vertical movement of a large area of the sea floor during an undersea earthquake and travels at speeds in excess of 450 mph.. USC Tsunami Research Center, is an organization dedicated to the investigation of natural disasters known as tsunamis. www.seismic.ca.gov /Tsunami.htm   (1247 words)

Scientific American: TSUNAMI!   (Site not responding. Last check: ) Such remote-source tsunamis can strike unexpectedly, but local-source tsunamis--as in the case of last year's Papua New Guinea disaster--can be especially devastating. Regardless of their origin, tsunamis evolve through three overlapping but quite distinct physical processes: generation by any force that disturbs the water column, propagation from deeper water near the source to shallow coastal areas and, finally, inundation of dry land. When seismic energy is focused in a smaller area, the vertical motion of the seafloor--and therefore the initial tsunami height--is greater. www.sciam.com /print_version.cfm?articleID=000B6F41-8BC1-1C71-9EB7809EC588F2D7   (3841 words)

Tsunami A tsunami (pronounced “soo-nahm'ee”) is a series of waves generated by an undersea disturbance such as an earthquake. A tsunami (pronounced tsoo-nah-mee) is a wave train, or series of waves, generated in a body of water by an impulsive disturbance that vertically displaces the water column. The 1929 Tsunami in the Burin Peninsula, Newfoundland www.cdli.ca /CITE/oceantsunam.htm   (972 words)

The Why Files | Tsunamis in the news A young tsunami survivor is loaded on a rescue plane as he calls for his mother at the destroyed village of Sissano, Papua New Guinea on July 19. The intensity at which a tsunami strikes land is also related to the distance between the land and the center of the earthquake. Responding to preliminary data from the disaster, George Curtis, a tsunami researcher at the University of Hawaii, said, "It was an awful combination from the point of view of having a tsunami. whyfiles.org /068tsunami   (1165 words)

Tsunami   (Site not responding. Last check: ) The phenomenon we call "tsunami" (soo-NAH-mee) is a series of traveling ocean waves of extremely long length generated by disturbances associated primarily with earthquakes occurring below or near the ocean floor. Tsunamis are a threat to life and property to anyone living near the ocean. Large tsunamis have been known to rise over 100 feet, while tsunamis 10 to 20 feet high can be very destructive and cause many deaths and injuries. www.nws.noaa.gov /om/brochures/tsunami.htm   (304 words)

American Red Cross Tsunamis are often incorrectly referred to as tidal waves, but a tsunami is actually a series of waves that can travel at speeds averaging 450 (and up to 600) miles per hour in the open ocean. Although this tsunami had a wave height of about one foot and was not destructive, it illustrates how quickly a wave can arrive at nearby coastal communities and how long the danger can last. Review land use in tsunami hazard areas so no critical facilities, such as hospitals and police stations; or high occupancy buildings, such as auditoriums or schools; or petroleum-storage tank farms are located where there is a tsunami hazard. www.redcross.org /services/disaster/0,1082,0_592_,00.html   (2689 words)

tsunami When tsunamis approach shallow water along a coast, they are slowed, causing their length to shorten and their height to rise sometimes as high as 100 ft (30 m). Tsunamis may be detected by wave gauges and pressure monitors, such as those emplaced as part of the Tsunami Warning System operating in the Pacific regions; construction on an early warning system for the Indian Ocean began in 2005. Earthquakes and Tsunami - An earthquake is a trembling movement of the earth's crust. www.factmonster.com /ce6/sci/A0849598.html   (594 words)

Tsunami Response - Two Years On: Lives and Communities Being Rebuilt - ADB.org The 26 December 2004 tsunami in the Indian Ocean was one of the worst disasters in recent memory. Two years after the Indian Ocean tsunami, there are clear signs of progress in the most badly affected regions yet enormous work lies ahead to help these communities fully recover from the unprecedented disaster. In Maldives, ADB's tsunami grant assistance package of $21.65 million in grants and $1.8 million in loans is helping to restore infrastructure, including transport and power, as well as livelihoods, with help for agriculture and fisheries. www.adb.org /tsunami/default.asp   (722 words)

The Deadliest Tsunami in History?   (Site not responding. Last check: ) Summary The earthquake that generated the great Indian Ocean tsunami of 2004 is estimated to have released the energy of 23,000 Hiroshima-type atomic bombs. The earthquake that generated the great Indian Ocean tsunami of 2004 is estimated to have released the energy of 23,000 Hiroshima-type atomic bombs, according to the U.S. Geological Survey (USGS). A tsunami may be less than a foot (30 centimeters) in height on the surface of the open ocean, which is why they are not noticed by sailors. news.nationalgeographic.com /news/2004/12/1227_041226_tsunami.html   (1016 words)

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