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The term "tsunami" is a borrowing from the Japanese tsunami 津波, meaning "harbour wave."For the plural, one can either follow ordinary English practice and add an s, or use an invariable plural as in the Japanese. [14]
A tsunami hitting a coastline. This article lists notable tsunamis, which are sorted by the date and location that they occurred.. Because of seismic and volcanic activity associated with tectonic plate boundaries along the Pacific Ring of Fire, tsunamis occur most frequently in the Pacific Ocean, [1] but are a worldwide natural phenomenon.
A massive tsunami with waves up to 30 m (100 ft) high, known as the Boxing Day Tsunami after the Boxing Day holiday, or as the Asian Tsunami, [10] devastated communities along the surrounding coasts of the Indian Ocean, killing an estimated 227,898 people in 14 countries, violently in Aceh , and severely in Sri Lanka, Tamil Nadu , and Khao Lak ...
The 2004 Indian Ocean earthquake and tsunami occurred on Sunday, December 26, 2004. The earthquake itself, with a moment magnitude of around 9.2-9.3, devastated Aceh Province, Indonesia, while the tsunami affected countries all around the Indian Ocean. Nations which were affected are listed below in alphabetical order.
A tsunami earthquake can be defined as an undersea earthquake for which the surface-wave magnitude M s differs markedly from the moment magnitude M w, because the former is calculated from surface waves with a period of about 20 seconds, whereas the latter is a measure of the total energy release at all frequencies. [2]
The tsunami had an amplitude of 1.19 m (3 ft 11 in) in Zihuatanejo. Waves of just under 1 m (3 ft 3 in) were recorded in Acapulco, Huatulco and Salina Cruz. [132] Tsunami activity along the Pacific coast persisted until 20 January. The tsunami measured taller than 2 m (6 ft 7 in) at Ensenada, Baja California.
With 426 deaths, the tsunami was the deadliest volcanic tsunami in recorded history in Indonesia since the 1883 Krakatoa tsunami, which originated from the same island. [7] Following the tsunami, Indonesian authorities installed multiple emergency early warning systems in tsunami-prone areas.
Many villages on the islands were affected by the tsunami, which reached a height of 3 m (9 ft) and swept as far as 600 m (1800 ft) inland. The tsunami caused widespread destruction that displaced more than 20,000 people and affected about 4,000 households. 435 people were reported to have been killed, with over 100 more still missing. [3]