1983 Popayán earthquake
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| Date | 31 March 1983 |
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| Origin time | 08:13 (UTC-5) |
| Duration | 18–28 seconds |
| Magnitude | 5.5 Mw |
| Depth | 12–15 kilometers (7.5–9.3 mi) |
| Epicenter | 2°27′40″N 76°41′10″W / 2.461°N 76.686°WCoordinates: 2°27′40″N 76°41′10″W / 2.461°N 76.686°W |
| Areas affected | Popayán, Colombia |
| Casualties | 267 killed |
The 1983 Popayán earthquake (Spanish: El Terremoto de Popayán) occurred on 31 March in Popayán, Colombia. It had a magnitude of at least 5.5 with an epicenter south west of Popayán at a depth of 12–15 kilometers (7.5–9.3 mi). The earthquake killed 267 people and resulted in the passing of new laws requiring earthquake resistant building materials in zones at risk of tremors.
Popayán had been founded in 1537 and was renowned for its beauty and surviving examples of architecture from the Spanish colonial period. The city had already suffered natural disasters and had been destroyed on three occasions by an earthquake and two volcanic eruptions.
The 1983 earthquake occurred at 08:13 on Maundy Thursday of that year. Although it lasted less than half a minute, damage to property was extensive and 267 people were killed, with a further 7,500 people injured. In total, 14,000 buildings were damaged, the majority of them in the city's historic centre. 6,885 of them suffered damage greater than 50% to the structure and a further 4,500 minor damage. 2,470 houses collapsed. Approximately $50 million of damage was caused. Serious damage was also caused to local infrastructure. The residents were left without electricity and water, communications were affected and the damage to the town's airport meant that it could only be used by helicopters and smaller planes. Many of the injured had to be airlifted to Cali, the nearest large city.
The quake also affected many of the neighbouring towns and regions and in Cajibio, at least ten people were killed.
The President of Colombia, Belisario Betancur, accompanied by other members of the government, visited the scene and attended the funerals which followed the disaster. The government responded by securing credit from the World Bank and earmarked $80 million for the city, with half of this to be used for reconstruction and the rest for economic regeneration.
Colombia also received assistance from other countries. The Spanish Red Cross sent material to help those injured, the Spanish government also offered assistance, while Venezuela sent a plane to provide medical assistance to the survivors and the United States sent material and medical supplies worth US$700,000.
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