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.

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 invites you to 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 will summarize 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.


  • 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.

2021 Haiti Earthquake Reconnaissance Briefing Webinar

October 13, 2021, 11:00am–12:30 PM, Pacific Time

This EERI Learning from Earthquakes webinar provided a multi-disciplinary overview of preliminary observations from the M7.2 August 14, 2021 Haiti Earthquake. The earthquake caused widespread damage in the Nippes and Sud Departments, including the Port town of Les Cayes. This earthquake occurred 11 years after the deadly M7.0 2010 earthquake that hit closer to the capital city of Port-au-Prince. While the epicenter of the August earthquake was located more than 40 miles west of the densely populated capital area, casualties in the affected communities still numbered over 2,200 with more than 10,000 reported injured. The area also faced the additional challenge of Tropical Depression Grace, which made landfall two days after the earthquake, and whose strong winds and heavy rains hampered response and recovery efforts. The webinar covered the earthquake seismology, the humanitarian response, and scientific, engineering, social, and political impacts.

Speakers include:

  • Maggie Ortiz-Millan, Senior Program Manager, EERI
  • Sue Hough, Geophysicist, USGS
  • Lindsey Davis, Earthquake Disaster Assistance Team (EDAT) Manager,
    USGS and USAID Earthquake Disaster Assistance Team
  • Kate Allstadt, Research Geophysicist, USGS
  • Shideh Dashti, Associate Professor of Geotechnical Engineering and Geomechanics, University of Colorado, Boulder; GEER
  • Joanne Pérodin, MPH; Doctoral Candidate, Florida International University
  • Gefthé Dévilmé, Field Officer, GeoHazards International
  • Tracy Kijewski-Correa Linbeck Collegiate Chair and Associate Professor,
    University of Notre Dame; Director, StEER Network


Quick Quake Briefing: Alaska M8.2 Offshore Earthquake of July 28, 2021

September 23, 2021, 12:00-1:00 PT 

AK QQB imageThe EERI Northern California Regional Chapter and the EERI Learning from Earthquakes Program held a FREE webinar on the M8.2 earthquake that struck on July 28, 2021 (local date) offshore Alaska. The very strong quake was one of the largest to strike Alaska in recent history. It was located about 70 miles east southeast of Perryville, Alaska (about 500 miles southwest of Anchorage). The quake was a result of thrust faulting at a depth of 22 miles on the subduction zone between the Pacific plate and North American plate where the Pacific plate begins diving under Alaska. Fortunately, Alaska was mostly unscathed, thanks to the remote location and depth of the epicenter. Tsunami alerts were issued shortly after the earthquake and several coastal communities were evacuated. Only small tsunami waves measuring under a foot above tide level were observed initially, and tsunami alerts were called off under two hours after the quake. Final maximum wave amplitudes observed were between 1 and 2 feet above the tide, and the tsunami was detected down the U.S. West Coast as well as in Hawaii.

The Quick Quake Briefing featured two speakers from Alaska:

  • Dr. Michael West, State Seismologist, Fairbanks, Alaska. He presented on the seismological mechanism of the earthquake, its relation to other recent earthquakes, and how it influences our thinking about future quakes.
  • Dr. Summer Ohlendorf, Science Officer, NOAA/NWS/ National Tsunami Warning Center, Palmer, Alaska. She presented on the tsunami warning process following this quake, and the evolution of our understanding about the tsunami that was generated.


EERI 2021 Distinguished Lecture Webinar Series

Join EERI for a series of free public webinars featuring Dr. Craig Davis and building on the themes of his 2021 EERI Distinguished Lecture! Additional webinars in the series will be hosted by EERI Regional Chapters this fall.

Register here for free!

Operationalizing Lifeline Infrastructure System Resilience to Earthquakes
September 1, 2021, 1:00-2:00 PM PT

To launch this fall’s Distinguished Lecture Webinar Series, EERI is rebroadcasting Dr. Craig Davis’s Distinguished Lecture from the 2021 Annual Meeting. The lecture explores how lifeline infrastructure system resilience is intimately linked to and supports community resilience through the services they provide. Lifelines are interdependent socio-technical systems vital in the day-to-day operations of our communities, and their basic services essential for community recovery after earthquakes. They include water, wastewater, stormwater control, electric power, gas and liquid fuel, telecommunication, solid waste, and multi-modal transportation systems. This lecture identifies features making lifeline systems resilient and provides examples on putting resilience into practice.

Seismic Resilient Lifeline Networks
September 8, 2021, 1:00-2:30 PM PT

This live webinar, hosted by EERI's Southern California chapter, will focus on the concepts of resilience and functional recovery as they apply to critical lifelines. True resilience against the earthquake threat must incorporate all functioning systems of the community. We must not only design buildings to withstand a large event, but also design the complex systems that support those buildings with resilience in mind. Experts in infrastructure for water, power, natural gas, and sanitation will detail recent gains and future strategies made by those utilities in enhancing the resilience of their lifeline systems. The webinar will begin with a brief presentation by Craig Davis, who will then be joined by John Shamma of the Metropolitan Water District, Jennifer Pearce of Southern California Edison, Mehrshad Ketabdar of SoCal Gas, and Donald Cutler of Orange County Sanitation, who will present and discuss the concepts of functional recovery and resilience within their respective lifeline systems, followed by an open floor for audience questions and discussion.

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.

Quick Quake Briefing: M7.0 Samos Island (Offshore Greece and Turkey) Earthquake October 30, 2020

Tuesday, 24 August 2021

The EERI Northern California Regional Chapter and the EERI Learning from Earthquakes Program are co-hosting a FREE webinar on the Samos-Izmir M7.0 earthquake that struck on October 30, 2020 in the Aegean Sea between Turkey and Greece.

The quake caused significant damage and left many dead in Turkey from collapsed buildings. The worst effects were in western Turkey, particularly in the city of Izmir, where over 4 million people live some 40 miles from the epicenter. The earthquake also triggered a tsunami that flooded coastal areas in Turkey and Samos Island. The epicenter was located at the sea border between Turkey and Greece, and faults in that area were not well explored. In the aftermath of the earthquake, leaders of both countries expressed the need for future cooperation—”whatever our differences, these are times when our people need to stand together.” The briefing will also discuss joint Greece/Turkey research.

Earthquake Engineering Research Institute
499 14th Street, Suite 220
Oakland, CA 94612
Phone: 510-451-0905
Fax: 510-451-5411
Email: eeri@eeri.org

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