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.

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.

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.

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 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.