Remembering the deadliest tsunami in history | CNN
3 days ago · On December 26, 2004, a magnitude 9.1 earthquake struck off the coast of Sumatra, Indonesia, triggering a massive tsunami in the Indian Ocean.
Tsunami - Wikipedia
A tsunami (/(t) s uː ˈ n ɑː m i, (t) s ʊ ˈ-/ (t)soo-NAH-mee, (t)suu-; [1] [2] [3] [4] from Japanese: 津波, lit. 'harbour wave', [5] pronounced) 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.
Tsunami | Definition, Meaning, & Facts | Britannica
2 days ago · What is a tsunami? A tsunami is a catastrophic ocean wave, usually caused by a submarine eruption. Waves radiate outward from the generating impulse at speeds of up to 500 miles (800 km) per hour, reaching maximum heights of 100 feet (30 metres) near coastal areas.
The science behind tsunamis | National Oceanic and Atmospheric ...
Dec 6, 2024 · The NCEI historical tsunami database is focused on documented historical tsunamis, as such it does not include sources only inferred from the study of tsunami deposits or other geologic and archeological evidence. Tsunami deposits are the physical evidence left behind when a tsunami impacts a shoreline or affects submarine sediments.
Indian Ocean Tsunami Was the Deadliest in History. 20 Years Later ...
3 days ago · “Tsunami is a Japanese word,” said Syamsidik, an engineer who now directs the Tsunami and Disaster Mitigation Research Center at Syiah Kuala University in Banda Aceh, Indonesia, and, like many ...
What is a tsunami? - NOAA's National Ocean Service
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 …
Tsunamis - National Oceanic and Atmospheric Administration
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.
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 when...
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 consist of multiple waves that rush ashore like a fast-rising tide with powerful currents.
Tsunamis | National Oceanic and Atmospheric Administration
Aug 15, 2023 · 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 common cause, but landslides, volcanic activity, certain types of weather, and meteorites can also cause a tsunami.