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The 1960 Valdivia earthquake and tsunami (Spanish: Terremoto de Valdivia) or the Great Chilean earthquake (Gran terremoto de Chile) occurred on 22 May 1960.Most studies have placed it at 9.4–9.6 on the moment magnitude scale, [1] while some studies have placed the magnitude lower than 9.4, [6] [7] making it the most powerful earthquake ever recorded.
Of the world's 46 known earthquakes with M ≥ 8.5 since the year 1500, one-third occurred in Chile [citation needed] and are shown in the map to the side. Some virtually have the same epicenters like the 1604 and 1868 (in Arica), the 1730 and 1822 (in Valparaíso), the 1751 and 1835 (in Concepción), and the 1575 and 1837 (in Valdivia).
The 1960 Valdivia earthquake was the largest event recorded by a seismograph. Chile was left with major destruction from the earthquake and a large tsunami which swept across the Pacific. 2.226 people were killed and 3,000 were injured. 58,622 homes were destroyed. Damage costs were $1 billion (1960 rate).
The Great Chilean earthquake tsunami (1960) killed one person and caused $500,000 to $1,000,000 of damage in Los Angeles, damaged harbors in many coastal cities, and flooded streets in Crescent City. [18] Waves from the Alaskan Good Friday earthquake of 1964 killed twelve people in Crescent City and caused damage as far south as Los Angeles.
Shake map provided by the US Geological Survey of the earthquake. / Credit: USGS The earthquake was first registered as having a preliminary magnitude of 6.6, but USGS updated it to 7.0.
The largest recorded megathrust earthquake was the 1960 Valdivia earthquake, estimated between magnitudes 9.4–9.6, centered off the coast of Chile along the Peru-Chile Trench, where the Nazca plate subducts under the South American plate. [26] This megathrust region has regularly generated extremely large earthquakes.
Tsunami warning canceled after 7.0 magnitude earthquake strikes off California coast December 5, 2024 at 11:05 AM Shake map shows areas south of Eureka, California experienced the most shaking.
The 1647 Santiago earthquake struck Santiago, Chile on the night of 13 May (22:30 local time, 02:30 UTC on 14 May) and is said to have brought virtually every building in the city to the ground. The earthquake was felt throughout the so-called Captaincy General of Chile , an administrative territory of the Spanish Empire.