2022 Michoacán, Mexico Earthquake Reconnaissance Briefing [English] скачать в хорошем качестве

2022 Michoacán, Mexico Earthquake Reconnaissance Briefing [English]

The Earthquake Engineering Research Institute (EERI) Learning from Earthquakes Program, the Sociedad Mexicana de Ingeniería Sísmica (SMIS), the Universidad Nacional Autónoma de México (UNAM), and the Geotechnical Extreme Events Reconnaissance Association (GEER) hosted a free reconnaissance briefing webinar on the M7.6 September 19, 2022 Michoacán, Mexico Earthquake. This was the third major earthquake to occur in Mexico on September 19th in the last 40 years. A large earthquake drill in Mexico City is carried out annually on the anniversary of the great Mw 8.0 September 19, 1985 earthquake. On September 19, 2017, a magnitude 7.1 earthquake occurred on the 32nd anniversary of the 1985 earthquake a few hours after the city wide earthquake drill. This magnitude 7.6 earthquake struck again on the anniversary of the 1985 earthquake, but now only about 45 min after the city-wide earthquake drill. The Seismic Early Warning System of Mexico (SASMEX) was triggered as a result of this event and provided a 98-second warning in Mexico City. The earthquake caused moderate to extensive damage to structures near the epicenter, mainly affecting the states of Colima and Michoacán. Observed geotechnical impacts include roadway and bridge damage, damage to a drainage culvert, and ground failure from liquefaction, lateral spreading, and landsliding. The earthquake also produced a small tsunami with a maximum measured wave amplitude of 1.7m in the port of Manzanillo. This webinar provided an overview of the earthquake seismology, earthquake early warning system performance, and geotechnical and structural engineering impacts. Speakers: Dr. Eduardo Miranda is a Professor of Civil and Environmental Engineering at Stanford University, specializing in performance-based earthquake engineering, and co-chair of the Learning From Earthquakes Executive Committee. Dr. Héctor Guerrero Bobadilla is President of the Sociedad Mexicana de Ingeniería Sísmica and a researcher in structural engineering at the Institute of Engineering of the National Autonomous University of Mexico. Dr. Juan Manuel Espinosa is an engineer and the founder and Director-General of CIRES, the Center for Seismic Instrumentation and Recording in Mexico. Dr. Miguel A. Jaimes is a professor and researcher in structural engineering at the Institute of Engineering of the National Autonomous University of Mexico. Kevin Clahan is a Principal Geologist at Lettis Consultants International and an expert in the fields of engineering geology, seismic hazard, and slope stability. Dr. Juan Manuel Mayoral Villa is a civil and geotechnical earthquake engineer and a research professor at the Institute of Engineering of the National Autonomous University of Mexico, where he is the head of the Advance Numerical Modeling and Instrumentation group. Dr. Sergio Alcocer is a research professor at the Institute of Engineering of the National Autonomous University of Mexico (UNAM) and the former undersecretary for North America in the Ministry of Foreign Affairs of Mexico. Maggie Ortiz-Millan is the Director of Programs at the Earthquake Engineering Research Institute.