Σάββατο, 27 Φεβρουαρίου 2010

Magnitude 8.3 - OFFSHORE MAULE, CHILE


Earthquake Details

Magnitude8.3
Date-Time
Location35.826°S, 72.669°W
Depth59.4 km (36.9 miles)
RegionOFFSHORE MAULE, CHILE
Distances100 km (60 miles) NNW of Chillan, Chile
100 km (65 miles) WSW of Talca, Chile
115 km (75 miles) NNE of Concepcion, Chile
320 km (200 miles) SW of SANTIAGO, Chile
Location Uncertaintyhorizontal +/- 10.6 km (6.6 miles); depth +/- 40 km (24.9 miles)
ParametersNST=220, Nph=220, Dmin=>999 km, Rmss=1.09 sec, Gp= 36°,
M-type=teleseismic moment magnitude (Mw), Version=6


Earthquake OFFSHORE MAULE, CHILE


A massive earthquake of 8.3 magnitude has struck central Chile.
The epicentre was 91km (56 miles) north-east of the city of Concepcion and 317km south-west of the capital, Santiago. The US Geological Survey (USGS) said the earthquake struck at 0634 GMT at a depth of about 59.4km. There is no information yet on any casualties. The US government said a tsunami warning had been issued for Chile, Peru and Ecuador.
Buildings in Santiago were reported to have shaken for between 10 and 30 seconds, with the loss of electricity in some parts of the capital. Telephone lines and internet connections appear to have been damaged.Local television stations said there was damage to buildings in the historic center of Santiago, which lies about 200 miles north of the epicenter. People streamed onto the streets of the capital, hugging each other and crying, and there were blackouts in parts of the city.An earthquake of magnitude 8 or over can cause "tremendous damage," the USGS says. The quake that devastated Haiti's capital Port-au-Prince on January 12 was rated at magnitude 7.0. The Pacific Tsunami Warning Center said the Chile quake generated a tsunami that may have been destructive along the coast near the epicenter "and could also be a threat to more distant coasts." It issued a tsunami warning for Chile and Peru, and a tsunami watch for Ecuador, Colombia, Panama, Costa Rica and Antarctica.According to a 2002 census, Concepcion is one of the largest cities in Chile with a population of around 670,000. Chile's main copper producing region and some of the world's largest copper mines are in the far north of the country near its border with Peru, but there are also copper deposits near Santiago. Chile produces about 34 percent of world supply of copper, which is used in electronics, cars and refrigerators.
In 1960, Chile was hit by the world's biggest earthquake since records dating back to 1900. The 9.5 magnitude quake devastated the south-central city of Valdivia, killing 1,655 people and sending a tsunami which battered Easter Island 2,300 miles off Chile's Pacific seaboard and continued as far as Hawaii, Japan and the Philippines.

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