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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.
3 days ago · tsunami, catastrophic ocean wave, usually caused by a submarine earthquake, an underwater or coastal landslide, or a volcanic eruption. The term tidal wave is frequently used for such a wave, but it is a misnomer, for the wave has no connection with the tides.
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 widespread destruction when...
Dec 14, 2015 · Tsunamis are giant, powerful waves most often caused by earthquakes beneath the ocean floor. Their incredible power can destroy entire communities, then drag the debris out to sea. This video ...
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.
Dec 8, 2023 · Tsunamis, also known as seismic sea waves, are massive ocean waves that are typically caused by underwater earthquakes, volcanic eruptions, or landslides. These waves can travel at high speeds across vast distances and can cause significant damage when they reach the shore.
Find out how a tsunami is born and how it destroys.See All National Geographic Videos http://video.nationalgeographic.com/video/?source=4001 Subscribe: http...
A tsunami is a catastrophic ocean wave that is usually caused by a submarine earthquake, an underwater or coastal landslide, or the eruption of a volcano. Tsunamis can also result from the impact of a meteor or comet in a body of water.
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 with the ocean.
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.
