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- Dictionarytsunami/(t)sʊˈnɑːmi/
noun
- 1. a long, high sea wave caused by an earthquake or other disturbance: "the loss of human lives from this latest tsunami is staggering"
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5 days ago · Tsunami, catastrophic ocean wave usually caused by a submarine earthquake, by a landslide, or by a volcanic eruption. In deep water it travels as fast as 800 km (500 miles) per hour, with enormous wavelengths of more than 500 km (310 miles) but small wave amplitudes of about 30 to 60 cm (1 to 2 feet).
A tsunami is a series of waves caused by earthquakes or undersea volcanic eruptions. On September 29, 2009, a tsunami caused substantial damage and loss of life in American Samoa, Samoa, and Tonga. The tsunami was generated by a large earthquake in the Southern Pacific Ocean.
As the tsunami approaches the coast and the waters become shallow, wave shoaling compresses the wave and its speed decreases below 80 kilometres per hour (50 mph). Its wavelength diminishes to less than 20 kilometres (12 mi) and its amplitude grows enormously—in accord with Green's law.
Aug 23, 2023 · Learn what a tsunami is in science. Get the definition, explanation of how a tsunami works, and indications that one is about to occur.
Sep 17, 2024 · A tsunami is a large wave caused by movements in Earth''s outer layer, or crust. Learn more about these big waves and how NASA monitors them.
A tsunami is a series of ocean waves that sends surges of water, sometimes reaching heights of over 100 feet (30.5 meters), onto land. These walls of water can cause...
Oct 1, 2018 · A tsunami is a series of extremely long waves caused by a large and sudden displacement of the ocean, usually the result of an earthquake below or near the ocean floor. This force creates waves that radiate outward in all directions away from their source, sometimes crossing entire ocean basins.
A tsunami is a series of enormous waves (of up to 30 metres or more) created by disturbances near or below the ocean. The term “tsunami” (pronounced /soo-NAH-mee/) is made up of the Japanese words ”tsu” (meaning “harbour”) and “nami” (meaning “wave”).
Apr 2, 2007 · A tsunami is a series of great sea waves caused by an underwater earthquake, landslide, or volcanic eruption. More rarely, a tsunami can be generated by a giant meteor impact...
Tsunamis are ocean waves triggered by: Large earthquakes that occur near or under the ocean. Volcanic eruptions. Submarine landslides. Onshore landslides in which large volumes of debris fall into the water. Scientists do not use the term "tidal wave" because these waves are not caused by tides.
