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 water from a large event. Tsunami waves do not resemble normal undersea currents or sea waves because their wavelength is far longer. [7]

2024年12月6日 · A tsunami is a series of 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 tsunamis.

2 天之前 · A strong 7.1 magnitude earthquake has hit near the Pacific nation of Tonga and an initial tsunami warning was lifted hours later. The U.S.

Um tsunami é causado por um grande e repentino deslocamento do oceano, sendo o mais comum a partir de grandes terremotos sob ou perto do fundo dos mares. No entanto, tsunamis também podem ser gerados por perturbações não-sísmicas, como deslizamentos de terra, atividades vulcânicas, certos tipos de condições climáticas e pelo impacto ...

2025年3月17日 · 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.

2024年12月5日 · Your official U.S. government weather forecasts, warnings, meteorological products for forecasting the weather, tsunami hazards, and information about seismology.

What is a tsunami? 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.

2 天之前 · A major, 7.0-magnitude earthquake struck in the South Pacific Ocean on Monday, according to the United States Geological Survey. The quake prompted a brief “Tsunami Threat” for Tonga ...

NCEI and the co-located World Data Service for Geophysics compile a unique set of tsunami-related products as part of a continuing program to support the interests of tsunami warning centers, engineers, oceanographers, seismologists, and the public.

Os tsunamis são ondas gigantes que se formam nos oceanos em decorrência de abalos sísmicos, e outros fatores associados ao tectonismo, bem como por causas externas, como queda de meteoritos.