The Tsunami portal

The 2004 Indian Ocean tsunami at Ao Nang, Krabi Province, Thailand

A tsunami (/(t)suːˈnɑːmi, (t)sʊˈ-/ (t)soo-NAH-mee, (t)suu-; from Japanese: 津波(つなみ), lit. 'harbour wave', pronounced [tsɯnami]) is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations, landslides, glacier calvings, meteorite impacts and other disturbances) above or below water all have the potential to generate a tsunami. Unlike normal ocean waves, which are generated by wind, or tides, which are in turn generated by the gravitational pull of the Moon and the Sun, a tsunami is generated by the displacement of water from a large event.

Selected article

This article lists notable tsunamis, which are sorted by the date and location that they occurred. (Full article...)

List of selected articles
Aceh Tsunami Museum Children of Tsunami: No More Tears Deep-ocean Assessment and Reporting of Tsunamis Download to Donate: Tsunami Relief Ghosts of the Tsunami Humanitarian response to the 2011 Tōhoku earthquake and tsunami Impact of the 2011 Tōhoku earthquake and tsunami on the video game industry Indian Ocean Tsunami Warning System Journal of Earthquake and Tsunami List of cities and towns severely damaged by the 2011 Tōhoku earthquake and tsunami List of tsunamis affecting New Zealand List of tsunamis in Europe NOAA Center for Tsunami Research National Tsunami Warning Center Pacific Tsunami Museum Pacific Tsunami Warning Center Songs for Tsunami Relief: Austin to South Asia Surviving the Tsunami - My Atomic Aunt Tsunami Aid Tsunami Benefit Tsunami Bomb Tsunami Evaluation Coalition Tsunami PTSD Center Tsunami Relief Cardiff Tsunami Society Tsunami Station Tsunami UDP Protocol Tsunami Warning, Education, and Research Act of 2014 Tsunami bomb Tsunami deposit Tsunami warning system Tsunami-proof building Tsunami: The Aftermath Tsunamis affecting the British Isles Tsunamis in lakes World Cricket Tsunami Appeal

List of selected articles

Events that can cause a tsunami

A submarine, undersea, or underwater earthquake is an earthquake that occurs underwater at the bottom of a body of water, especially an ocean. They are the leading cause of tsunamis. The magnitude can be measured scientifically by the use of the moment magnitude scale and the intensity can be assigned using the Mercalli intensity scale. (Full article...)

List of events articles
Earthquake Tsunami earthquake Submarine eruption Landslide Glacier calving Meteorite impact

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General images

The following are images from various tsunami-related articles on Wikipedia.

Image 1Diagram showing several measures to describe a tsunami size, including height, inundation and run-up (from Tsunami)
Image 2Evacuation route sign on the pavement in Kamakura, Japan (from Tsunami warning system)
Image 3Mast with warning system, and sign detailing escape routes, on the coast of Okumatsushima, Miyagi prefecture, Japan (this coast was severely hit by the 2011 tsunami) (from Tsunami warning system)
Image 4Evacuation route sign in a low-lying coastal area on the West Coast of the United States (from Tsunami warning system)
Image 5Tsunami Early Warning Tower board in Hikkaduwa, Sri Lanka (from Tsunami warning system)
Image 6Satellite image of Lake Kivu (from Tsunamis in lakes)
Image 7A seawall at Tsu, Mie Prefecture in Japan
Image 8Japanese Tsunami warning sign (from Tsunami warning system)
Image 9One of the deep water buoys used in the DART tsunami warning system (from Tsunami)
Image 10Drawing of tectonic plate boundary before earthquake (from Tsunami)
Image 11An illustration of the rhythmic "drawback" of surface water associated with a wave. It follows that a very large drawback may herald the arrival of a very large wave. (from Tsunami)
Image 12When the wave enters shallow water, it slows down and its amplitude (height) increases. (from Tsunami)
Image 13Plate slips, causing subsidence and releasing energy into water. (from Tsunami)
Image 14Lisbon earthquake and tsunami in November 1755 (from Tsunami)
Image 15Calculated travel time map for the 1964 Alaska tsunami (in hours) (from Tsunami)
Image 16Over-riding plate bulges under strain, causing tectonic uplift. (from Tsunami)
Image 17Figure 1: Diagram showing how earthquakes can generate a tsunami. (from Tsunamis in lakes)
Image 18The energy released produces tsunami waves. (from Tsunami)
Image 19The wave further slows and amplifies as it hits land. Only the largest waves crest. (from Tsunami)
Image 20Tsunami aftermath in Aceh, Indonesia, December 2004 (from Tsunami)
Image 21The 2004 Indian Ocean tsunami at Ao Nang, Krabi Province, Thailand (from Tsunami)
Image 22Tsunami warning system in East Timor (from Tsunami warning system)

Selected tsunami article

A helicopter flies over the port of Sendai to deliver food to survivors of the earthquake and tsunami.

On 11 March 2011, at 14:46 JST (05:46 UTC), a 9.0–9.1 undersea megathrust earthquake occurred in the Pacific Ocean, 72 km (45 mi) east of the Oshika Peninsula of the Tōhoku region. It lasted approximately six minutes, causing a tsunami. It is sometimes known in Japan as the "Great East Japan Earthquake" (東日本大震災, Higashi nihon daishinsai), among other names. The disaster is often referred to by its numerical date, 3.11 (read san ten ichi-ichi in Japanese). (Full article...)

Selected tsunami articles
1771 Great Yaeyama Tsunami 1792 Unzen earthquake and tsunami 1947 Gisborne earthquakes and tsunami 1979 Nice tsunami 1992 Flores earthquake and tsunami 2004 Indian Ocean earthquake and tsunami 2004 Sri Lanka tsunami train wreck 2006 Pangandaran earthquake and tsunami 2009 Samoa earthquake and tsunami 2010 Mentawai earthquake and tsunami 2017 Aceh World Solidarity Tsunami Cup 2018 Sulawesi earthquake and tsunami 2018 Sunda Strait tsunami 426 BC Malian Gulf tsunami Aftermath of the 2011 Tōhoku earthquake and tsunami Countries affected by the 2004 Indian Ocean earthquake and tsunami Indonesian tsunami Prehistoric tsunamis Satoshi Tsunami Yuta Tsunami

Selected tsunami articles