February 6, 2023 Kahramanmaraş Earthquakes: An Initial Assessment of Recorded Ground Motions and Observed Damages
Ayşegül Askan
Middle East Technical University
- Date & Time
- Location
- Online-only seminar via Microsoft Teams
- Host
- Alan Yong
- Summary
On Feburary 6, 2023, two earthquakes with M7.8 and M7.5 occurred in Southeastern Türkiye only hours apart and caused significant damage and fatalities. The effects of these events were very widespread with complex source and site effects as well as major geotechnical and structural damages. The mainshocks and their aftershock sequences were recorded in a large region by the national strong motion network of Türkiye, operated by AFAD. This presentation will provide a general initial assessment of the earthquakes, focusing mainly on the strong ground motions and examples of observed damages. Initially, the regional tectonics, past seismic activity in the area and characteristics of the recorded strong motions of the will be highlighted. Next, comparisons of observed data against the most recent design spectra and selected ground motion models will be presented. Field observations of common geotechnical and structural damages will be briefly demonstrated. Finally, implications for future hazard assessments, possible building code updates and risk mitigation practices will be discussed.
Closed captions are typically available a few days after the seminar. To turn them on, press the ‘CC’ button on the video player. For older seminars that don’t have closed captions, please email us, and we will do our best to accommodate your request.