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・ 1949 in New Zealand
・ 1949 in North Korea
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・ 1949 All-Big Seven Conference football team
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・ 1949 All-Ireland Senior Camogie Championship
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・ 1949 All-Ireland Senior Hurling Championship Final
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・ 1949 Allan Cup
1949 Ambato earthquake
・ 1949 anti-NATO riot in Iceland
・ 1949 Argentine Primera División
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・ 1949 Atlantic hurricane season
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・ 1949 Australia rugby union tour of New Zealand
・ 1949 Australian Championships
・ 1949 Australian Championships – Men's Singles
・ 1949 Australian Championships – Women's Singles
・ 1949 Australian coal strike
・ 1949 Australian Grand Prix
・ 1949 BAA draft


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1949 Ambato earthquake : ウィキペディア英語版
1949 Ambato earthquake

The 1949 Ambato earthquake was the largest earthquake in the Western Hemisphere in more than five years. On August 5, 1949, it struck Ecuador's Tungurahua Province southeast of its capital Ambato and killed 5,050 people. Measuring 6.8 on the Richter scale it originated from a hypocenter beneath the surface. The nearby villages of Guano, Patate, Pelileo, and Pillaro were destroyed, and the city of Ambato suffered heavy damage. The earthquake flattened entire buildings, and subsequent landslides caused damage throughout the Tungurahua, Chimborazo, and Cotopaxi Provinces. It disrupted water mains and communication lines and opened a fissure into which the small town of Libertad sank. Moderate shaking from the event extended as far away as Quito and Guayaquil.〔
Earthquakes in Ecuador stem from two major interrelated tectonic areas: the subduction of the Nazca Plate under the South American Plate and the Andean Volcanic Belt. The 1949 Ambato earthquake initially followed an intersection of several northwest-southeast-trending faults in the Inter-Andean Valley which were created by the subduction of the Carnegie Ridge. Strata of rock cracked as the earthquake ruptured the faults, sending out powerful shockwaves. Today threats exist throughout the country from both interplate and intraplate seismicity.
== Background ==
Earthquakes are common in Ecuador. Near the Nazca subduction zone the recorded history of interplate earthquakes spans 80 years.〔 At the time it struck the 1949 Ambato earthquake was the second-worst earthquake in Ecuador's modern history topped only by the 1797 Riobamba earthquake,〔 and the most devastating earthquake in the Western Hemisphere since the 1944 San Juan earthquake. Several major earthquakes have occurred throughout the country since 1949, including the 1987 Ecuador earthquakes and the 1997 Ecuador earthquake. The 2007 Peru earthquake also affected the country.

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