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1944 San Juan earthquake

The 1944 San Juan earthquake took place in the province of San Juan, in the center-west area of Argentina, a region highly prone to seismic events. This moderate to strong earthquake (estimated moment magnitudes range from 6.7 to 7.8) destroyed a large part of San Juan, the provincial capital, and killed 10,000 of its inhabitants, 10% of its population at the time. [*] It is acknowledged as the largest natural disaster in Argentine history.

The earthquake occurred at 8:52 pm on 15 January 1944 and had its epicenter located 30 km north of the provincial capital, near La Laja in Albardon Department. Some 90% of the buildings in the city were destroyed and those left standing suffered such damage that in most cases they had to be demolished. It is considered that the reason for such widespread destruction was the low quality of construction, rather than just the power of the earthquake.

In 1944 many of San Juan's houses were made of adobe and the reconstruction programme prompted the creation of a building code that took into account contemporary knowledge of earthquakes and their effect on buildings. Stronger bricks were used, concrete single-story houses were erected and sidewalks and streets were made wider.

Aid and reconstruction

There was some debate as to whether it would be advisable to rebuild the city in the same place, or to take advantage of the situation to move it to a less earthquake prone location. The former alternative was adopted.

At the start of the reconstruction, emergency homes were built for the population with funds from the national state. This was the first large-scale state-directed construction plan in Argentina, the first stages of which occurred under Peronist rule. Colonel Juan Peron, later to become president, had met his wife Eva Duarte (Evita), during fundraising activities to help the victims. After the 1955 coup d'etat ousted Peron, the reconstruction was continued under the de facto President Pedro Eugenio Aramburu.

The earthquake caused many families to scatter in the confusion, and left many orphaned children. According to historian Mark Healey, the social issues surrounding these orphans had a profound influence on the shaping of the family legislation enacted during Peron's first term as president, two years later.

The modern city

As of 2006, San Juan has a population of around 400,000, and 63% of its approximately 90,000 homes, and 100% of its public institutional buildings, were built under seismic safety regulations. This, however, leaves more than a third of houses as non-seismic-resistant.

A study of the seismic vulnerability of the city, conducted by the National University of San Juan in 2005, showed that 28% of the outlying neighborhoods present medium risk, and 20% of the city itself can be classified as high or very high vulnerability.


Historia del pais. El terremoto de San Juan.

Universia Argentina. San Juan: identifican la vulnerabilidad sismica.

EIRD. Prevencion Sismica y Desarrollo Urbano.

Diario de Cuyo. 15 January 2004. Aniversario del Terremoto del 44.

Pagina/12. 7 August 2006. "Hubo un borramiento del pasado" (interview with historian Mark Healey).

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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article 1944 San Juan earthquake

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