4 On the morning that terror struck, Mexico City felt the magnitude of an earthquake that developed off the coast of Michoacán. The 1985 earthquake claimed more than 10,000 lives, flattened 30,000 buildings and damaged 68,000 more. As a … The effects of the quake were particularly devastating because of the type of ground upon which the city sits. Webmaster | Contact Us | Our Other Offices, Created June 13, 2011, Updated January 6, 2017, Manufacturing Extension Partnership (MEP), Measurement Science for Additive Manufacturing, Measurement Science for Manufacturing Robotics, Trustworthy Systems, Components, and Data for Smart Manufacturing, Energy-Efficient, High Performance Buildings, Net-Zero Energy, High-Performance Buildings, Disaster-Resilient Buildings, Infrastructure, and Communities, Earthquake Risk Reduction in Buildings and Infrastructure, Engineered Materials for Resilient Infrastructure, Structural Performance under Multi-hazards, Materials and Structural Systems Division, Disaster Resilience Federal Funding Opportunity (FFO), National Science and Technology Council (NSTC) Committees, Net-Zero Energy Residential Test Facility. A building at the National College of Professional Education fell, trapping hundreds of students who were attending early-morning classes. Mexico City, 18 April 2017 - Five years after the devastating 1985 quake, which killed more than 10,000 people, Mexico equipped itself with one of the world’s most effective early warning systems for earthquakes. The disaster preparedness exercise marked the 31st anniversary of the 8.1 magnitude earthquake that devastated the city September 19, 1985. The strongest earthquake occurred on September 19, in Mexico City. An official website of the United States government. September 1985 Uhrzeit 13:17:50 UTC Magnitude: 8,0 M W: Tiefe 21,18 km Epizentrum: Koordinaten: 18° 32′ 18″ N, 102° 19′ 27″ W: Land Mexiko: Tote mehr als 10.000 Das Erdbeben von Mexiko-Stadt (auch Erdbeben von Michoacán) vom 19. On 19 September 2017, an earthquake shook Mexico City with an intensity not felt since the same day 32 years before, when the 1985 magnitude 8.1 Michoacan earthquake killed more than 9,000 people and left more than 100,000 homeless. Secure .gov websites use HTTPS It is estimated that the quake seriously affected an area of approximately 300,000 square miles, caused over three billion U.S. dollars of damage, and was felt by almost twenty million people. When the damage was finally assessed, 3,000 buildings in Mexico City were demolished and another 100,000 suffered serious damage. Its epicenter was in a subduction zone in the western part of the country, in Baja California near Michoacan. Further, the tremors caused gas mains to break, causing fires and explosions throughout the city. The Chronicle’s front page from Sept. 20, 1985, covers the magnitude 8.0 quake that struck Mexico City a day before a magnitude 7.5 aftershock did even more damage. The September 2017 magnitude 7.1 Puebla earthquake Despite the 350-km distance from the earthquake epicenter to Mexico City, most of the 9,500 fatalities occurred there. Following the earthquake, a team consisting of four engineers and one seismologist from the National Bureau of Standards (NBS) and the United States Geological Survey (USGS) was dispatched to Mexico City to provide technical advice to the U.S. rescue effort and to assess structural damage. ) or https:// means you've safely connected to the .gov website. Its epicenter was in a subduction zone in the western part of the country, in Baja California near Michoacan. The quake on September 19 was centered 250 miles west of the city but, due to the relatively unstable ground underneath the city, serious shaking lasted for nearly 3 minutes. On September 19, 1985, a powerful earthquake strikes Mexico City and leaves 10,000 people dead, 30,000 injured and thousands more homeless. In 1985, Mexico City was the world’s largest urban area. Altogether four hundred buildings collapsed and another 3,000 were seriously damaged. A lock ( LockA locked padlock The earthquake measured seven point eight on the richter scale its center was about forty miles off the coast on Mexico's Pacific side but people felt it in Houston. The earthquake reached a magnitude 8.0, according to the United States Geological Survey. The length of the intervening distance between the earthquake’s source and Mexico City greatly reduced the amplitude of the seismic waves so that very few structures that were built on firm soil and rock suffered damage. Official websites use .gov On September 19, 1985, at 7:18 in the morning, the residents of Mexico City were jolted awake by an 8.1-magnitude earthquake, one of the strongest to ever hit the area. The most damaged zones were those in the bed of the historic Lake Texcoco, where the prevailing silt and volcanic clay sediments amplified the shaking. The 7.1-magnitude quake hit hours after preparation drills were held on the anniversary of a devastating 1985 earthquake that killed more than 5,000 people in Mexico City. The death toll was later revised. At around 7:19 a.m. on September 19, 1985, Mexico City, one of the world’s largest urban areas, was jolted by a magnitude 8.1 earthquake, one of … Hier gleitet die schwere Cocos-Platte langsam unter die Kontinentalmasse. The 1985 Mexico City earthquake was one of the most devastating earthquakes in the history of the Americas. This one hit late Thursday, when many people were asleep. Mexico was hit early Friday morning by a magnitude 8.1 earthquake off its southern Pacific coast that killed 32 people and could be felt 1,000 kilometres away. Required fields are marked *. The NBS report, "Engineering Aspects of the September 19, 1985 Mexico Earthquake (NBS BSS 165)," is primarily based on data gathered by the team, but it also contains a compilation of other available information. intensity: IX : Tsunami: 1–3 m: Aftershocks: 7.5 M w 20 September 1985 7.0 M w 30 April 1986: Casualties: 5,000–45,000 dead 30,000 injured: The 1985 Mexico City earthquake was an earthquake that happened in Mexico City on September 19, 1985. Compared with California which, in the course of the twentieth century, experienced five earthquakes of magnitudes greater than 7, Mexico had forty-two, most of them leading to a high death toll of human lives. In September 1985, a magnitude 8.0 earthquake killed an estimated 9,500 people in and around Mexico City. The prolonged ground movement caused several old hotels, including the Regis, Versailles and Romano, to crumble. The September 1985 quake happened in a seismicity gap that had been identified by geologists as a risk area for the previous ten years. On Thursday, September 19, 1985, at 7:19 AM local time, Mexico City was struck by an earthquake of magnitude 8.1 [1] on the Richter scale. Your email address will not be published. At 7:18 in the Central Mexico was struck by a 7.1 magnitude quake yesterday evening and a citywide recovery operation is currently underway in the capital. Mexico City is on a plateau surrounded by mountains and volcanoes. Water well fluctuations were recorded at Ingleside, Texas, Santa Fe, New Mexico; Rolla, Missouri, Hillsborough County, Florida, and Smithsburg, Maryland. https://www.nist.gov/el/earthquake-mexico-1985. On September 19, 1985, at 7:18 in the morning, the residents of Mexico City were jolted awake by an 8.1-magnitude earthquake, one of the strongest to ever hit the area. mexico - earthquake undro information report no.1 19 september 1985 1. a major earthquake of richter magnitude 7.8 struck mexico at 1318 gmt today. On September 19, 1985, Mexico was hit with an earthquake of magnitude 8. About 67 destructive or powerful earthquakes occurred in 1985. September 1985 war mit tausenden Toten das verheerendste Erdbeben in der Geschichte Mexikos. Extensive damage also occurred all across the country. A .gov website belongs to an official government organization in the United States. The states of … The 8.1-magnitude quake struck Mexico City on Sept. 19, 1985, followed by a 7.5-magnitude aftershock one day later. The epicenter of the 7.1-magnitude earthquake was 2.8 miles (4.5 kilometers) east-northeast of San Juan Raboso and … Seiches were observed in East Galveston Bay, Texas and in swimming pools in Texas, New Mexico, Colorado, and Idaho. At least 9,500 people were killed, about 30,000 were injured, more than 100,000 people were left homeless, and severe damage was caused in parts of Mexico City and in several states of central Mexico. … This was one of the most devastating earthquakes in the history of the Americas and it was followed by major aftershocks. (adsbygoogle = window.adsbygoogle || []).push({}); Your email address will not be published. As the aquifer under the city has slowly drained, it has been discovered that the city sits atop a combination of dirt and sand that is much less stable than bedrock and can be quite volatile during an earthquake. In Mexico City, on the opposite side of the country, shaking from the quake lasted three to four minutes. Magnitude: 8.0 M w: Depth: 20 km (12 mi) Epicenter Coordinates: Areas affected: Mexico: Total damage: Extreme: Max. Mexico City is on a plateau surrounded by mountains and volcanoes. At least 10,000 people were … With more than 16 million residents, the city had been growing at a ludicrous rate – over 4% annually through the 1970s, with a growth rate of close to 40% in the city’s periphery. In 1985, a Great, magnitude 8.1 subduction zone earthquake occurred beneath the coast of Michoacan Mexico. 1985-09-21 01:37:13 UTC 7.6 magnitude, 30 km depth Pantla, Guerrero, Mexico 7.6 magnitude earthquake 1985-09-21 01:37:13 UTC at 01:37 September 21, 1985 UTC The plateau region was covered by lakes … No reports of damage were received from any of these stations and the only minor damage due to the first tsunami came from the source region. Building damage was worsened by occurrences of soil liquefaction, causing loss of foundation support and settlement of large buildings. Many sources place the location of the epicentre in the state of Michoacán—approximately 200 miles (320 km) from Mexico City—in a region of tectonic tension between the North American Plate and the subducting Cocos Plate. The report addresses the origin and characteristics of the observed ground motion, the ability of buildings designed in accordance with present and proposed seismic design provisions to resist this type of ground motion, and observed data on structural and foundation failures. The shifting of tectonic plates in a depth of 2 km resulted in 98 deaths. Während Mexiko zur Nordamerikanischen Kontinentalplatte zählt, beginnt an der Pazifikküste die Cocos-Erdplatte. Both tsunamis spread across the Pacific and were recorded by several tide stations in Central America, Colombia, Ecuador, French Polynesia, Samoa, and Hawaii. The effects of the quake were particularly devastating because of the type of ground upon which the city sits . Bei diesem Prozess entstehen intensive Erdbeben entlang der mexikanischen Küstenregion. 1985-09-19 13:17:47 UTC 8.0 magnitude, 27 km depth Arteaga, Michoacán, Mexico 8.0 magnitude earthquake 1985-09-19 13:17:47 UTC at 13:17 September 19, 1985 UTC The Mexico earthquake caused between 3 and 4 billion U.S. dollars of damage, and was felt by almost 20 million people; at least 9,500 people were killed, and about 30,000 were injured. The earthquake also triggered a tsunami with further victims and destructions. Many factories in the city, built with shoddy materials, also could not stand. Earthquake Mexico 1985 . The earthquake generated a small tsunami and the first aftershock that had a magnitude of 7.5 produced a small second tsunami. Daher ist die Karibikküste kaum erdbebengefährdet. Earthquakes México 1985. Credit: Derrick Ceyrac/AFP/Getty Images) Share sensitive information only on official, secure websites. That earthquake prompted Mexico to develop an earthquake alert system for all of Southern Mexico. epicentre located 17.8n 102.3w, i.e. The magnitude-8.0 quake occurred at 7:18 am. México was hit by 182 earthquakes with a magnitude of 4 and … The plateau region was covered by lakes in ancient times. Earthquakes in Mexico since 1950 The strongest earthquake in Mexico happened on 09/08/2017 in the region Oaxaca, Chiapas, Tabasco; Guatemala with a magnitude of 8.2 on the Richter scale. This animation describes the tectonic and geologic process that affect the region, … The collapsed General Hospital in Mexico City after the earthquake struck. Every year since its establishment, Mexico City has been steadily sinking into the fragile soil,” and when earthquake waves arrive in the areas around the city, they are amplified by a factor of 100, causing the damage to be worse than it would be in any other soil. 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