Thursday, March 17

12:00-1:00 PM (Pacific) / 1:00-2:00 PM (Mountain)

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The March 18, 2020 M5.7 Magna, Utah earthquake was a vivid reminder of the hazard posed by the Wasatch Fault to the fast-growing population of the Salt Lake Valley. As the EERI Utah Chapter’s 2015 Scenario study shows, a M7.0 earthquake in the region could result in thousands of deaths, tens of thousands of residents left without shelter, and economic losses measured in the tens of billions. But Utah’s residents are rising to the challenge of building a more resilient state. From the Fix the Bricks program to aid homeowners in adapting unreinforced masonry buildings to the ongoing seismic retrofits of major landmarks like the Salt Lake City Temple, the urban fabric of Salt Lake City is rapidly transforming to become more earthquake-resistant, while planners, policymakers, and the public are more deeply aware of the need to build resilience than ever before. On the eve of the second anniversary of the Magna earthquake, this webinar will provide an interdisciplinary overview of earthquake risk and resilience in Utah today: from the underlying seismology of the region, to current retrofit projects and engineering challenges, to the policymaking context and community planning for recovery.

Hear from these local experts about the progress Utah is making on earthquake risk mitigation—and the work that remains to be done to ensure the state is ready for high-hazard, low-probability seismic threats:

• Emily Kleber, Project Geologist, Utah Geological Survey
• Ari Bruening, President and CEO, Envision Utah
• Brent Maxfield, Structural Engineer, The Church of Jesus Christ of Latter-day Saints
• Divya Chandrasekhar, Associate Professor of City & Metropolitan Planning, University of Utah

The webinar will be moderated by 12NCEE Organizing Committee co-chair Sean McGowan, Earthquake Program Manager for FEMA Region VIII.

Photo: Earthquake damage in Magna, Utah; Emily Kleber and Jessica Castleton, Utah Geological Survey

January 11, 2023
3:00-4:00 PM PST

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The Earthquake Engineering Research Institute (EERI) and the National Center for Research on Earthquake Engineering (NCREE) in Taiwan invite you to a free reconnaissance briefing webinar on the earthquakes that struck Taiwan in September 2022.

On September 18th, 2022, at 2:44 pm local time, a moment magnitude 6.9 earthquake struck 42.7 km north of Taitung City, Taiwan. The earthquake followed a magnitude 6.5 earthquake in the same area the previous day. The M6.9 earthquake caused both geotechnical failures and damage to infrastructure, mainly bridges, railroads, and highways. Damage to buildings was primarily concentrated on older non-ductile structures, as well as non-structural component damage. At least one building collapsed and hundreds more suffered some damage. The earthquake resulted in at least one death and 171 injuries.

The earthquake highlighted the vulnerabilities of older non-ductile concrete buildings in seismic regions, concrete bridges, and non-structural building components during an earthquake. This webinar will provide an overview of the event, including the earthquake seismology, emergency management, and geotechnical and structural engineering impacts.

Speakers:

• Gilberto Mosqueda, University of California at San Diego
• Chung-Che Chou, National Center for Research on Earthquake Engineering, Taiwan
• Erica Fischer, Oregon State University and Virtual Earthquake Reconnaissance Team (VERT)
• J. Bruce H. Shyu, National Taiwan University
• Wei-sen Li, National Science and Technology Center for Disaster Reduction, Taiwan
• Ben Mason, Oregon State University, United States Geological Survey, and Geotechnical Extreme Events Reconnaissance (GEER) Association
• Maggie Ortiz-Millan, Earthquake Engineering Research Institute

View a video recording of this webinar here.

Joint EERI-GEER Webinar: 2023 Kahramanmaraş Turkey Earthquake Sequence Reconnaissance Briefing

Monday, March 20
11:00 AM-12:00 PM Pacific Standard Time
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EERI's Learning from Earthquakes Program and the Geotechnical Extreme Events Reconnaissance (GEER) Assoication invite you to a FREE reconnaissance briefing webinar on the 2023 Kahramanmaraş earthquake sequence in Turkey.

On February 6, 2023, a M7.8 earthquake occurred in southern Turkey near the northern border of Syria, followed about 9 hours later by a M7.5 earthquake approximately 90 km to the north of the first. The impacts of these earthquakes were devastating. The number of fatalities in both countries has risen to more than 50,000. According to Turkish government sources, more than 200,000 buildings collapsed or suffered damage severe enough to require demolition. Over a million people have been displaced as a result.

A joint EERI-GEER advance reconnaissance team conducted field visits in the disaster zone in southern Turkey from February 15-20. The team traveled over 1,500 km in the affected areas, first along a north-to-south path, and then east-to-west in the southern third of the region. They collected perishable geotechnical data, made observations of structural damage, and assessed needs and opportunities for future reconnaissance.

The four members of the team will present initial findings on topics including surface fault rupture and liquefaction, impacts to structures and lifelines, and emergency response. As the team was unable to visit Syria, the webinar will focus on impacts in Turkey. 

Speakers:

• Robb Moss, Professor of Civil and Environmental Engineering, California Polytechnic State University at San Luis Obispo
• Özgür Kozacı, Principal Geologist, Mott MacDonald
• Ayşe Hortacsu, Director of Projects, Applied Technology Council
• Ayhan İrfanoğlu, Professor and Associate Head of Civil Engineering, Purdue University

PDH certificates will be available upon request.

Wednesday, March 8, 2023
12:00-1:00 PM Pacific Time
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Join EERI’s Younger Members Committee for a FREE webinar on Real-time hybrid simulation for earthquake induced motions and cascading earthquake and tsunami events, featuring two speakers:

• Dr. Barbara Simpson, Assistant Professor, Stanford University
• Dr. Liang Cao, Advanced Technology for Large Structural Systems (ATLSS) Engineering Research Center, Lehigh University

The first presentation will focus on real-time hybrid simulation (RTHS), a cost-effective cyber-physical simulation method that can be used to examine the behavior of systems too large or complex to test fully in a laboratory setting, alleviating the aforementioned constraints. Hydrodynamic-RTHS, or hydro-RTHS, couples physical waves and a partial structural specimen with a computational structural model in the NHERI-EF Large Wave Flume and Multi-Direction Wave Basin at Oregon State University (OSU). The second presentation will focus on recent developments of new types of high-performance control systems (HPCSs), including robust semi-active friction devices. The vibration mitigation performance of HPCSs is investigated through Real-time Hybrid Simulations (RTHS) on an earthquake-excited two-story reinforced concrete building.

View a video recording of this webinar here.

Thursday, December 8, 2022
11:00 AM-12:30 PM, Pacific Standard Time
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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) invite you to 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 will provide 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. Leonardo Ramirez Guzmán is a professor and researcher in the Engineering Seismology Group 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.
• 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.