A tsunami (pronunciation or ]) is a series of waves generated when a body of water, such as an ocean is rapidly displaced on a massive scale. Earthquakes, landslides, volcanic eruptions and large meteorite impacts 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 well-set as the plural. The term was created by fishermen although they had not been aware of any wave in the open water. A tsunami is not a sub-surface 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.
More on [ Tsunami ]
Tsunamis :: Geology
Earthquakes :: Geophysics

British Columbia Tsunami Preparedness - Information brochures, reports and firsthand accounts of past tsunamis, and other information on preparedness and hazard mitigation.
Meta Description: [ Information about tsunami preparedness in British Columbia ]
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Federal Emergency Management Agency - Tsunamis - Offers a brief overview of tsunamis and their formation, along with tips on preparation and mitigation.
Learning about tsunamis from the Indian Ocean disaster of December 2004 - Background, information, and links about tsunamis, focused on what can be learnt from the Indian Ocean disaster of 2004.
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Pacific Tsunami Museum - Museum to promote public education about tsunamis for the people of Hawaii and the Pacific Region. The museum will also preserve social and cultural history and serve as a living memorial to those who lost their lives in past tsunami events
PNG Provincial Governor Says Waves Killed 3,000 - Contemporary news accounts of three huge tidal waves which devastated villages in Papua New Guinea's remote northwest in 1998.
Science for Society: Impact of tsunamis on Oregon coastal communities - Includes scenarios, images and animations.
Tsunami - Survey, research, extensive links, general information.
Tsunami Data at NGDC - Features a unique set of tsunami-related database, maps, sets, and publications.
Meta Description: [ NGDC and the collocated World Data Center A for Solid-Earth Geophysics have compiled a unique set of tsunami-related products as part of a continuing program to support the interests of engineers, oceanographers, seismologists, and the general public. ]
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Tsunami Fact Sheet - Information from the Federal Emergency Management Agency (FEMA).
Tsunami from Asteroid Impacts - Research from the Planetary Society Australian Volunteers.
Tsunami Hazard Mitigation Program - Program designed to reduce the impact of tsunami and supported by United States Department of Commerce, NOAA, OAR and PMEL.
Meta Description: [ The National Tsunami Hazard Mitigaton Program is a Federal/State partnership program designed to reduce the impact of tsunamis through: hazard assessment, warning guidance, and mitigation ]
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Tsunami Links - Offers Federal, State, International, and multimedia links. From NOAA.
Tsunami Research Program - U.S. government program to mitigate tsunami hazards to Hawaii, California, Oregon, Washington and Alaska. Includes tsunami event data, modeling and forecasting, effects mapping, FAQ, and real-time ocean data.
Tsunamis and Earthquakes - General information from the United States Geological Survey on how local tsunamis are generated by earthquakes with animations, virtual reality models of tsunamis and summaries of past research studies.
Meta Description: [ General information on how earthquakes generate tsunamis and summaries of tsunami research using animations and VRML models ]
USC Tsunami Hazard Mitigation Team - Tsunami research; field surveys, numerical and analytical modeling, hazard mitigation and planning, locations of past tsunamis around the world, and video/animation of actual tsunamis. From University of Southern California.
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