Webinars

Webinars

EERI’s professional development webinars covers a broad range of topics for the community of earthquake risk reduction professionals. You will hear about the latest impacts and lessons from recent earthquakes, learn about emerging research from Earthquake Spectra, and hear from leading experts on complex technical topics. Recordings from previous webinars can be found in the Digital Library and on EERI's YouTube Channel.

2022 Michoacán, Mexico Earthquake Reconnaissance Briefing: A Joint EERI-SMIS Webinar

Thursday, December 8, 2022
11:00 AM-12:30 PM, Pacific Standard Time
REGISTER HERE

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.

Pre-12NCEE Webinar: Seismic Risk and Resilience in Utah

Thursday, March 17

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

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Utah Magna earthquake damageThe 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

YMC Webinar: Earthquake Liquefaction Hazards—From Site- to Regional-Scale Evaluation

Friday, March 4th, 2022
12:00-1:00 PM (PST)

REGISTER HERE 

The EERI Younger Members Committee is hosting a webinar this Friday on earthquake liquefaction hazards. Soil liquefaction has led to significant damage and loss during earthquake events. Therefore, the evaluation of seismic liquefaction hazards – from the scale of individual sites and structures to the regional scale - is an essential part of seismic hazard resilience. This webinar will present three different studies on earthquake liquefaction that span from liquefaction site hazard evaluation and impact to structures, to regional scale hazard evaluation:

  • Patrick Bassal (PhD Candidate, University of California, Davis) will first present a system-level study of liquefaction in interbedded soils during the Chi Chi Earthquake in Taiwan.
  • The second presentation by Zach Bullock (Assistant Professor, University of British Columbia) will describe the development of probabilistic procedures for estimating the average settlement of shallow foundations above liquefiable soils.
  • The final presentation by Hamed Tohidi (Adjunct Faculty, University of Memphis) will present the development of liquefaction hazard maps for the state of Tennessee.

There will be a 15-minute period following the presentations for audience questions and group discussion.

Lifeline Infrastructure System Functional Recovery and Operability (Distinguished Lecture Webinar Series, Part 3)

November 10, 2021
2:30-4:00 PM (Eastern), 11:30 AM-1:00 PM (Pacific)

This event was the third in a series of free public webinars featuring Dr. Craig Davis and building on the themes of his 2021 EERI Distinguished Lecture! Note: if you already registered for the series, you are pre-registered for this event, so all you need to do is save the date.

Historically, seismic design and building codes have focused primarily on ensuring safety in the event of an earthquake, with less attention to the state of structures and infrastructure systems in the aftermath. However, an increasing focus on resiliency in recent years has brought new attention to the concept of designing for functional recovery: a post-earthquake state in which capacity is sufficiently maintained or swiftly restored to support pre-earthquake functionality. As detailed in the January 2021 FEMA/NIST report “Recommended Options for Improving the Built Environment for Post-Earthquake Reoccupancy and Functional Recovery Time,” this means considering not only safety and recovery time for buildings, but ensuring recovery-based design, upgrade, and maintenance of a lifeline infrastructure systems as well. In this webinar, co-hosted by the EERI New England Regional Chapter and the University of Massachusetts at Amherst Student Chapter, EERI 2021 Distinguished Lecturer Craig Davis presented a short lecture on Lifeline Infrastructure System Functional Recovery and Operability, followed by a live panel with speakers from the US Army Corps of Engineers and the Massachusetts Department of Public Utilities. They spoke on the role, preparedness, and plans of their organizations to mitigate damage and restore service of critical lifeline systems after a disaster, and joined Dr. Davis for a Q&A session with the webinar audience.

Panelists:

  • Dr. Craig Davis
    EERI 2021 Distinguished Lecturer
  • Dr. Stephen Potts
    Geologist, U.S. Army Corps of Engineers
  • Tirzah Shakespeare
    Public Utilities Engineer, Massachusetts Department of Public Utilities

About Dr. Craig Davis

DavisIn his three-decade-long career at the Los Angeles Department of Water and Power, Dr. Davis worked as the Departmental Chief Resilience Officer, Seismic Manager, and Geotechnical Engineering Manager, and developed a comprehensive L.A. Water System resilience program. He has served on professional committees, including the Building Seismic Safety Council, the National Earthquake Hazards Reduction Program Advisory Committee on Earthquake Hazards Reduction, and ASCE Infrastructure Resilience Division. Dr. Davis has published more than 150 technical papers and investigated numerous earthquakes.

Davis has been honored with the ASCE 2016 Le Val Lund Award for Practicing Lifeline Risk Reduction, the 2020 Charles Martin Duke Lifeline Earthquake Engineering Award, and the EERI Distinguished Lecture Award. The annual Distinguished Lecture Award is awarded to EERI members to recognize and encourage communication of outstanding professional contributions of major importance for earthquake hazard mitigation.

New England Chapter Webinar: Determination of Undrained Strength for Contractive Coal Combustion Residuals for Seismic Assessment

Wednesday, October 20, 2021, 1:00–2:00 PM, Eastern Time

Cost: Free

The EERI New England Chapter held a free webinar on the evaluation of slope stability for Coal Combustion Residuals (CCR) impoundments. Such evaluation is becoming increasingly important as multiple failures involving undrained behavior of granular materials have recently occurred. Seismic loading is a load case where undrained behavior can be triggered that causes a rapid increase in mobilized shear stress or a rapid decrease in effective stress if contractive saturated materials are present. This rapid loading can trigger liquefaction within a CCR layer which would require considering the residual shear strength for the CCR material. The speakers summarized a study to improve understanding of the shear strength of CCR materials, discussing the approaches used to apply best applicable practices to make a reliable determination of peak and residual undrained shear strength of CCR materials, and provide recommendations on improving available methods to determine undrained shear strength of contractive materials.

Speakers:

  • Dr. Seda Gokyer Erbis is a Project Engineer/Assistant Project Manager for Geocomp Corporation—Massachusetts Consulting Group.
  • Ryan Lavorati is a Project Engineer at Geocomp Corporation—Massachusetts Consulting Group.
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