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The 1985 Mexico City earthquake struck in the early morning of 19 September at 07:17:50 (CST) with a moment magnitude of 8.0 and a maximal Mercalli intensity of IX (Violent). The event caused serious damage to the Greater Mexico City area and the deaths of at least 5,000 people. The sequence of events included a foreshock of magnitude 5.2 that ...
Guerrero, Oaxaca, Mexico City: 8.6 M w: Severe / tsunami: 1776-04-21: Mexico City, Southern: VIII: Stover & Coffman 1993 uses various seismic scales. M La is a local magnitude that is equivalent to M L (Richter scale) and is used for events that occurred prior to the instrumental period. It is based on the area of perceptibility (as presented ...
A large percentage of the buildings which were damaged in Mexico City were between 8 and 18 stories high, indicating possible resonance effects with dominant two-second period horizontal ground accelerations which were recorded in the area. September 20 – A magnitude 7.6 earthquake occurs near the coast of Guerrero, Mexico. Caused additional ...
Fig.2 : Site effects in Mexico city: recordings from the 1985 earthquake. Seismic site effects have been first evidenced during the 1985 Mexico City earthquake. [4] The earthquake epicenter was located along the Pacific Coast (several hundreds kilometers from Mexico-City), the seismic shaking was however extremely strong leading to very large damages.
The skyscraper notably withstood the 8.1 magnitude 1985 Mexico City earthquake without damage, [4] whereas several other structures in the downtown area were damaged. The Torre Latinoamericana was Mexico's tallest completed building for almost 27 years, [ 2 ] from its opening in 1956 until 1982 when the 214 m (702 ft) tall Torre Ejecutiva Pemex ...
The 1985 Mexico City earthquake prompted a national rethink of earthquake and emergency preparedness measures. The government of Mexico City sponsored the placement of accelerometers throughout the city in 1987, allowing data to be obtained on ground movements in the area. With the support of the local government, CIRES developed Mexico City's ...
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[citation needed] However, the last straw may have been the 1985 Mexico City earthquake. On Thursday, 19 September 1985, at 7:19 am local time, Mexico City was struck by an earthquake of magnitude 8.1. [123] on the Richter magnitude scale. The event caused between three and four billion USD in damage as 412 buildings collapsed and another 3,124 ...