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Tsunami are large waves caused by sudden movement of the ocean due to earthquakes, landslides, large volcanic eruptions or meteorite impact in the ocean.
Most tsunami are caused by large earthquakes on the seafloor when slabs of rock move past each other suddenly, causing the overlying water to move.

Tsunami - Wikipedia

en.wikipedia.org/wiki/Tsunami

A tsunami 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 ...

What are tsunamis, and what causes them? - International Tsunami ...

itic.ioc-unesco.org/index.php?option=com_content&view=article&id=1017:what-are-tsunamis-and-what-causes-them&catid=1004&Itemid=1004

From the area where the tsunami originates, waves travel outward in all directions. Once the wave approaches the shore, it builds in height. The topography of ...

What is a tsunami? - NOAA's National Ocean Service

oceanservice.noaa.gov/facts/tsunami.html

Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea. They speed along as fast as jet planes. As they near land, these waves ...

What Are Tsunamis, And What Causes Them? - About Tsunamis ...

www.lincolncity.org/index.asp?SEC=60CBC6B6-CFD1-4396-99A9-12D7D9985602&DE=3CBB9D7F-722A-46E6-A17A-D2C1638084CE&Type=B_BASIC

Tsunamis are ocean waves produced by earthquakes or underwater landslides. The word is Japanese and means “harbor wave,” because of the devastating ...

USGS FAQs - Tsunamis - What are Tsunamis?

www2.usgs.gov/faq/categories/9755/3036

Tsunamis are ocean waves triggered by large earthquakes that occur near or under the ocean, volcanic eruptions, submarine landslides, and by onshore ...

What causes Tsunamis? - Geoscience Australia

www.ga.gov.au/scientific-topics/hazards/tsunami/basics/causes

Tsunami are waves caused by sudden movement of the ocean due to earthquakes, landslides on the sea floor, land slumping into the ocean, large volcanic ...

Tsunami Facts, Tsunami Information, Tsunami Videos, Tsunami ...

environment.nationalgeographic.com/environment/natural-disasters/tsunami-profile/

Get Tsunami facts, photos, wallpapers, news and safety tips at National Geographic.

What are tsunamis? - World - CBC News

www.cbc.ca/news/world/what-are-tsunamis-1.820058

Sep 29, 2009 ... A tsunami is a series of very long ocean waves created when a large body of water is displaced. A tsunami can hit shore with devastating ...

What Is a Tsunami? - Windows to the Universe

www.windows2universe.org/earth/tsunami1.html

Apr 28, 2016 ... A tsunami (pronounced tsoo-NAH-mee) is a series of waves, made in an ocean or other body of water by an earthquake, landslide, volcanic ...