Search results
Results from the WOW.Com Content Network
A megatsunami is a tsunami with an initial wave amplitude measured in many tens or hundreds of metres.The term "megatsunami" has been defined by media and has no precise definition, although it is commonly taken to refer to tsunamis over 100 metres (330 ft) high. [2]
Tsunamis can occur when an underwater earthquake rapidly displaces massive amounts of water, leading to a large, long wave that builds in intensity as it crosses the ocean.
Tsunamis generally consist of a series of waves, with periods ranging from minutes to hours, arriving in a so-called "wave train". [11] Wave heights of tens of metres can be generated by large events. Although the impact of tsunamis is limited to coastal areas, their destructive power can be enormous, and they can affect entire ocean basins.
The Sanriku region was hit by a large tsunami on 13 July 869 AD, causing floods to spread 4 km (2.5 mi) inland from the coast. Tagajō was destroyed, with an estimated 1,000 casualties. 887 CE: Nankai, Japan: 887 Ninna Nankai earthquake: Earthquake: On 26 August 887 AD, there was a strong commotion in the Kyoto region, causing great destruction ...
A tsunami triggered by a large earthquake in Alaska would take approximately five hours to reach the city, the 2021 maps showed. Those findings were based on how, in 1964, a 9.2-magnitude ...
A 650-foot tsunami in Greenland was the result of melting glacial ice that caused a landslide. The waves it created bounced back and forth for nine days. The mysterious case of a 650-foot tsunami ...
Tsunamis caused by volcano-tectonic earthquakes have also occurred at Mount Yasur in 1878, Mount Okmok in 1878 and Kharimkotan in 1933. [4] Earthquakes caused by tectonic processes at volcanoes are also known to cause tsunamis. Such earthquakes can reach magnitudes greater than 6 and may occur on large thrust faults at the
The 2004 Indian Ocean tsunami at Ao Nang, Krabi Province, Thailand. A tsunami (/(t) s uː ˈ n ɑː m i, (t) s ʊ ˈ-/ (t)soo-NAH-mee, (t)suu-; from Japanese: 津波, lit. 'harbour wave', 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.