2010 Chile earthquake
Epicenter of the 2010 Chile earthquake
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| Date | 27 February 2010 |
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| Origin time | 03:34 CST (UTC-03:00) |
| Magnitude | 8.8 Mw |
| Depth | 35 kilometres (22 mi) or 30.1 kilometres (19 mi) |
| Epicenter | 35°54′32″S 72°43′59″W / 35.909°S 72.733°WCoordinates: 35°54′32″S 72°43′59″W / 35.909°S 72.733°W or 36°17′24″S 73°14′20″W / 36.290°S 73.239°W |
| Type | Megathrust |
| Areas affected | Chile |
| Max. intensity | MM VIII or MM IX |
| Peak acceleration | 0.65 g |
| Tsunami | Yes |
| Casualties | 525 dead, 25 missing. |
The 2010 Chile earthquake (Spanish: Terremoto del 27F) occurred off the coast of central Chile on Saturday, 27 February at 03:34 local time (06:34 UTC), having a magnitude of 8.8 on the moment magnitude scale, with intense shaking lasting for about three minutes. It was felt strongly in six Chilean regions (from Valparaíso in the north to Araucanía in the south), that together make up about 80 percent of the country's population. According to the United States Geological Survey (USGS) the cities experiencing the strongest shaking—VIII (Severe) on the Mercalli intensity scale (MM)—were Concepción, Arauco and Coronel. According to Chile's Seismological Service Concepción experienced the strongest shaking at MM IX (Violent). The earthquake was felt in the capital Santiago at MM VII (Very strong) or MM VIII. Tremors were felt in many Argentine cities, including Buenos Aires, Córdoba, Mendoza and La Rioja. Tremors were felt as far north as the city of Ica in southern Peru (approx. 2,400 km (1,500 mi) away).
The earthquake triggered a tsunami which devastated several coastal towns in south-central Chile and damaged the port at Talcahuano. Tsunami warnings were issued in 53 countries, and the wave caused minor damage in the San Diego area of California and in the Tōhoku region of Japan, where damage to the fisheries business was estimated at ¥6.26 billion (US$66.7 million). The earthquake also generated a blackout that affected 93 percent of the Chilean population and which went on for several days in some locations.President Michelle Bachelet declared a "state of catastrophe" and sent military troops to take control of the most affected areas. According to official sources, 525 people lost their lives, 25 people went missing and about 9% of the population in the affected regions lost their homes.
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