Tsunami in Japan 2011 FULL VIDEO - MEGA TSUNAMI Caught On Camera
Tsunami in
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For other uses, see Tsunami (disambiguation) and
Tidal wave.
This article is about waves, sometimes called "seismic sea waves," that travel through the ocean. For waves that travel through the
Earth itself, see
Seismic wave.
2011 Tohoku earthquake and tsunami, An aerial view of damage in the Sendai region with black smoke coming from the
Nippon Oil Sendai oil refinery
A tsunami (plural: tsunamis or tsunami; from
Japanese: ??, lit. "harbor wave";[1]
English pronunciation: /tsu?'n??mi/[2]) , also known as a seismic sea wave, 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 of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.[3] In being generated by the displacement of water, a tsunami contrasts both with a normal ocean wave generated by wind and with tides, which are generated by the gravitational pull of the
Moon and the Sun on bodies of water.
Tsunami waves do not resemble normal sea waves, because their wavelength is far longer.
Rather than appearing as a breaking wave, a tsunami may instead initially resemble a rapidly rising tide, and for this reason they are often referred to as tidal waves, although this usage is not favored by the scientific community because tsunamis are not tidal in nature. Tsunamis generally consist of a series of waves with periods ranging from minutes to hours, arriving in a so-called "wave train".[4]
Wave heights of tens of meters can be generated by large events. Although the impact of tsunamis is limited to coastal areas, their destructive power can be enormous and they can affect entire ocean basins; the
2004 Indian Ocean tsunami was among the deadliest natural disasters in human history with at least 230,000 people killed or missing in 14 countries bordering the
Indian Ocean.
The Greek historian
Thucydides suggested in his late-5th century BC
History of the Peloponnesian War, that tsunamis were related to submarine earthquakes,[5][6] but the understanding of a tsunami's nature remained slim until the
20th century and much remains unknown.
Major areas of current research include trying to determine why some large earthquakes do not generate tsunamis while other smaller ones do; trying to accurately forecast the passage of tsunamis across the oceans; and also to forecast how tsunami waves would interact with specific shorelines.
Tsunamis in lakes
Tsunami-proof building
Tsunami Society
Tsunamis affecting New Zealand
Tsunamis in the United Kingdom
Kaikoura Canyon landslide tsunami hazard
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Tsunami in Japan 2011 FULL VIDEO - MEGA TSUNAMI Caught On Camera
https://youtu.be/JXTbGT6DNF8