EERI's Learning From Earthquakes (LFE) Program invites you to a FREE webinar series this month with the LFE and GEER reconnaissance teams that traveled to Turkey in March to assess the impacts of the February 6, 2023 Kahramanmaraş Earthquake Sequence.

GEER Kahramanmaraş Earthquakes Reconnaissance Webinar: Geotechnical Impacts

Tuesday, May 30, 2023
10:00 AM-11:30 AM Pacific Time
REGISTER HERE 

On May 30, in the final webinar in this series, the Geotechnical Extreme Events Reconnaissance (GEER) Association will share reconnaissance findings on the geotechnical impacts of the February 6, 2023 earthquake sequence. GEER and EERI sent an advance reconnaissance team to Turkey in mid-February, a week after the earthquakes, to collect perishable data and identify areas for further research. A Phase I GEER team followed to collect data along extensive fault ruptures, inspect affected dams, and map areas with variable levels of liquefaction-related damage. A Phase II GEER team later performed reconnaissance of liquefaction-related damage to port facilities and foundations. Members of all teams will join the webinar to present on their findings and respond to questions from the audience.

Moderator: Jonathan Stewart, UCLA

Speakers:

• Kemal Önder Çetin, Middle East Technical University
• Özgür Kozacı, Pacific Gas & Electric
• Tristan Buckreis, UCLA
• Diane Moug, Portland State University
• Kristin Ulmer, Southwest Research Institute
• Robb Moss, California Polytechnic State University San Luis Obispo
• David Frost, Georgia Institute of Technology

Registering once at the above link will allow you to attend any of the webinars in the series.

PDHs for each webinar will be available at no charge to EERI members, and at a fee of $35 per webinar for non-members.

View a video recording of this webinar here.

EERI's Learning From Earthquakes (LFE) Program invites you to a FREE webinar series this month with the LFE and GEER reconnaissance teams that traveled to Turkey in March to assess the impacts of the February 6, 2023 Kahramanmaraş Earthquake Sequence.

LFE Kahramanmaraş Earthquakes Buildings Reconnaissance Webinar

Tuesday, May 23, 2023
10:00 AM-11:30 AM Pacific Time
REGISTER HERE 

The EERI Buildings Team traveled more than 3200 kilometers through the earthquake-affected region of Turkey in mid-March 2023, conducting reconnaissance in İskenderun, Samandağı, Kırıkhan, Antakya, Adana, Osmaniye, Kahramanmaraş, Gaziantep, Adıyaman, Gölbaşı, Malatya, Hassa, İslahiye and Nurdağı. The team focused on understanding the overall structural performance of buildings, including correlation with peak ground intensity at nearby ground motion recording stations. The majority of the buildings were residential, but the team also documented and categorized the response of industrial facilities, commercial buildings, school buildings, and religious and historical structures. The building sample includes reinforced concrete, steel moment frame, precast concrete, and unreinforced masonry buildings. The team also recorded damage to nonstructural building components. In this webinar, members of the team will present their findings and respond to questions.

Moderator: Eduardo Miranda, Stanford University

Speakers:

• Parth Gudhka, IMEG
• Bora Genturk, University of Southern California
• Halil Sezen, Ohio State University (team lead)
• Rupa Garai, SOM
• Morgan Griffith, Exponent
• Michael Mieler, ARUP

An additional webinars will take place in the following week at the same time on Tuesday. The May 30th webinar will focus on geotechnical impacts, with members of the GEER reconnaissance teams.

Registering once at the above link will allow you to attend any of the webinars in the series. PDHs for each webinar will be available at no charge to EERI members, and at a fee of $35 per webinar for non-members.

View a video recording of this webinar here.

EERI's Learning From Earthquakes (LFE) Program invites you to a FREE webinar series this month with the LFE and GEER reconnaissance teams that traveled to Turkey in March to assess the impacts of the February 6, 2023 Kahramanmaraş Earthquake Sequence.

LFE Kahramanmaraş Earthquakes Hospitals Reconnaissance Webinar

Tuesday, May 16, 2023
10:00 AM-11:30 AM Pacific Time
REGISTER HERE 

The LFE Hospitals Reconnaissance Team visited hospitals (including both seismically isolated and fixed-base structures) in the affected region of southern Turkey in March, collecting data on both structural and nonstructural performance. The team documented the operational status for 36 hospitals six weeks after the mainshocks, looking particularly at factors that impacted functional recovery. In this webinar, Bret Lizundia S.E., Executive Principal and Rutherford + Chekene, will present findings and preliminary recommendations on behalf of the hospitals team, with other team members available for Q&A.

Moderator: Eduardo Miranda, Stanford University

Hospitals Team Members:

• Ali Sümer, California Department of Health Care Access and Information (Team Lead)
• Gordon Wray, Degenkolb
• Maryann Phipps, Estructure
• Ali Roufegarinejad, Forell/Elsesser
• Ricardo Henoch, SOM
• Önder Akıncı, Simpson, Gumpertz, & Heger
• Volkan Kara, Cerrahpaşa Medical School
• Yüksel Tonguç, PROMER

Additional webinars will take place in the following weeks at the same time on Tuesday.

The May 23rd webinar will focus on buildings, with members of the buildings reconnaissance team led by Halil Sezen (Ohio State University).

The May 30th webinar will focus on geotechnical impacts, with members of the GEER reconnaissance teams.

Registering once at the above link will allow you to attend any of the webinars in the series. PDHs for each webinar will be available at no charge to EERI members, and at a fee of $35 per webinar for non-members.

View a video recording of this webinar here.

EERI's Learning From Earthquakes (LFE) Program invites you to a FREE webinar series this month with the three LFE reconnaissance teams that traveled to Turkey in March to assess the impacts of the February 6, 2023 Kahramanmaraş Earthquake Sequence.

LFE Kahramanmaraş Earthquakes Lifelines Reconnaissance Webinar

Tuesday, May 9, 2023
10:00 AM-12:00 PM Pacific Time
REGISTER HERE 

In this webinar, members of the lifelines reconnaissance team will share their findings on the structural and nonstructural performance of the infrastructures that facilitate the functioning of society. Lifelines include bridges, roads, tunnels, railroads, metro and tram stations, airports, ports, dams, electrical transmission lines, substations, gas transmission lines, water pipes, chemical plants, and power plants. The team gathered data on more than 150 sites throughout the affected region, looking at performance and functionality, the types of failures that caused disruptions, damage patterns, and properties of lifelines that ensured good performance during the earthquakes.

Moderator: Eduardo Miranda, Stanford University

Speakers:

• Riccardo Cappa, Simpson, Gumpertz, & Heger
• Brad Wham, University of Colorado at Boulder
• Ezra Jampole, Exponent
• Jeff Hunt, Exponent
• Robert Kraus, WJE
• Brent Chancellor, WJE
• Burcu Güldür, Hacettepe University
• Menzer Pehlivan, Jacobs

Additional webinars will take place in the following weeks at the same time on Tuesday.

The May 16 webinar will focus on hospitals, with members of the hospitals reconnaissance team led by Ali Sumer (California HCAI).

The May 23rd webinar will focus on buildings, with members of the buildings reconnaissance team led by Halil Sezen (Ohio State University).

Registering once at the above link will allow you to attend any of the webinars in the series. PDHs for each webinar will be available at no charge to EERI members, and at a fee of $35 per webinar for non-members.

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
REGISTER HERE TO ATTEND

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
REGISTER HERE

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 February 16, 2023
4:00-5:00 PM Pacific Time
REGISTER HERE

The EERI Northern California Regional Chapter is hosting a FREE webinar on the M5.6 earthquake that struck West Java in Indonesia. 

The earthquake struck near Cianjur in West Java. Between 330 and 640 people died, and over 7,700 were injured. More than 63,000 homes were damaged across the region. The earthquake was strongly felt in the Indonesian capital Jakarta, over 100 km (63 mi) to the North. It is the deadliest earthquake to hit Indonesia since the 2018 Sulawesi earthquake.

Damage evaluated after the quake indicated a maximum Modified Mercalli intensity of VIII (Severe). According to the Meteorology, Climatology, and Geophysical Agency (BMKG), the earthquake had a strike-slip focal mechanism at a depth of 11 km (7 mi), classifying it as a shallow event. Despite the moderate size of the earthquake, its shallow depth caused strong shaking. The National Agency for Disaster Countermeasure (BNPB) described the damage to homes and buildings as "massive."

Two speakers will be joining from Indonesia:

• Dr. Nuraini Rahma Hanifa, a previous EERI Housner Fellow now with the Research Center for Geological Disaster, Research Organization of Earth Sciences and Maritime, National Research and Innovation Agency (BRIN), will present an overview of the earthquake and its aftermath.
• Dr. Sigit Pramono of the Engineering Seismology Earthquake Early Warning System Division, Meteorological Climatological and Geophysical Agency (BMKG) will present on the engineering seismology aspects.

View a video recording of this webinar here.

Thursday, February 9, 2023
11:00 AM-1:00 PM Pacific Time
REGISTER HERE

EERI's Learning from Earthquakes Program and the California Earthquake Clearinghouse invite you to a FREE reconnaissance briefing webinar on the earthquake that struck Humboldt County, California in December.

At 2:34 AM on December 20, 2022, a M6.4 earthquake struck offshore near Ferndale, California, causing damage to lifelines and structures in Humboldt County. Structures in the nearby communities of Ferndale, Fortuna, and Rio Dell experienced damage including broken windows, collapsed chimneys, and fallen bricks, and a small number of buildings slid off their foundations. Roughly 150 homes were damaged or destroyed in the earthquake. More than 70,000 people lost power, and there was damage to roads and bridges in the area. The ShakeAlert earthquake early warning system was activated, and approximately three million people in northern California and southern Oregon received warnings.

In this multidisciplinary webinar, speakers will provide information on the science, engineering, and emergency response aspects of the earthquake, and discuss the impact on lifelines and critical infrastructure, including electricity, transportation, and healthcare facilities.

Speakers include:

• Cynthia Pridmore, California Geological Survey
• Jason Patton, California Geological Survey
• Richard Allen, Berkeley Seismological Laboratory and MyShake
• Maggie Ortiz-Millan, Earthquake Engineering Research Institute
• Megan Stanton, Pacific Gas and Electric
• Bob Tanaka and Richard Heninger, Caltrans Division of Engineering Services
• Speaker TBD from California Department of Health Care Access and Information

Additional speakers will be announced soon. PDH certificates will be available upon request.

View a video recording of this webinar here.

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

REGISTER HERE TO ATTEND

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.

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.