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A series of landslides at Reed Terrace between April and August 1953 generated tsunamis at least 11 times. The largest of them reached a maximum height of 65 feet (20 m) along the opposite shore of the lake and was observed as far as 6 miles (9.7 km) away. One of the waves reached a speed of 45 miles per hour (72 km/h). [136] 1956: Amorgos, Greece
The 1026 Manju tsunami affected the Sea of Japan coast of then Iwami Province on June 16. Considered one of the largest tsunamis in the Sea of Japan, it generated a tsunami with waves of 10 m (33 ft) at present-day Masuda, Shimane. Off the coast, an island reportedly sunk because of the waves.
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]
The Lituya Bay megatsunami caused damage at higher elevations than any other tsunami, being powerful enough to push water up the tree covered slopes of the fjord with enough force to clear trees to a reported height of 524 m (1,719 ft). [9] A 1:675 recreation of the tsunami found the wave crest was 150 m (490 ft) tall. [14]
It was the first detailed documentation of a tsunami in Indonesia and the largest ever recorded in the country. [1] The exact fault which produced the earthquake has never been determined, but geologists postulate either a local fault, or a larger thrust fault offshore. The extreme tsunami was likely the result of a submarine landslide.
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]
Based on the effects of a tsunami that hit Japan, a tsunami 20 m (66 ft) probably hit the Chilean coast in AD 1420, which swept boulders inland as if they were pebbles. [5] The 1420 Caldera earthquake generated tsunamis reaching Japan. [6] In the sea off of the Atacama near Caldera, on April 11, 1819, there was a magnitude 8.5 earthquake.
The 2002 Stromboli tsunami was caused by a volcanic eruption in the Aeolian Islands of Sicily, located on the Tyrrhenian Sea. In May 2002, one of the island's two active volcanoes , called Stromboli , entered a new phase of explosive activity that was initially characterized by gas and ash emission from the summit craters. [ 1 ]