Tsunami - Wikipedia
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 …
Tsunamis - National Oceanic and Atmospheric Administration
2018年10月1日 · 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. …
Tsunami | Definition, Meaning, & Facts | Britannica
2024年11月17日 · A tsunami is a catastrophic ocean wave, usually caused by a submarine earthquake, an underwater or coastal landslide, or a volcanic eruption. Waves radiate outward …
Tsunami Facts and Information - National Geographic
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...
What are tsunamis? | U.S. Geological Survey - USGS.gov
Tsunami waves are unlike typical ocean waves generated by wind and storms, and most tsunamis do not "break" like the curling, wind-generated waves popular with surfers. Tsunamis typically …
What is a tsunami? - NOAA's National Ocean Service
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 rear up to great heights and …
Tsunami Facts: How They Form, Warning Signs, and Safety Tips
2007年4月2日 · 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 …
Tsunami Propagation - National Oceanic and Atmospheric Administration
2023年4月10日 · Unlike wind waves that affect just the surface of the ocean, tsunamis propagate (move) through the entire depth of the ocean, from the surface to the floor. Large tsunamis can …
Life of a Tsunami | U.S. Geological Survey - USGS.gov
In addition, a tsunami can generate a particular type of coastal trapped wave called an edge wave. Edge waves travel back-and forth, parallel to shore. This results in many arrivals of the …
Tsunamis - National Oceanic and Atmospheric Administration
2023年8月15日 · Tsunamis are a series of long waves generated by a large and sudden displacement of the ocean. Large earthquakes below or near the ocean floor are the most …