Hi CEE community,

We had to reschedule this week’s speaker until a later date next quarter, so there will be no seminar held in More 225 this week. However, there is an ESS colloquium at 3:30 in Johnson Hall Room 102 that we recommend attending. The speaker is Dr. Alice-Agnes Gabriel, a seismologist from Scripps Oceanography. For CEE 500 students, please attend this seminar for credit this week. I will be there with a sign-in sheet as usual.

See the title and abstract for Dr Gabriel’s talk below and visit the event page for more information here:

“Understanding the Physics of Large, Multi-fault Earthquakes Using Supercomputing And Rapidly Available Observations: The 2023 Kahramanmaraş, Turkey, earthquake doublet”

The longest modern instrumental records of earthquakes cover less than 100 years, while recurrence intervals of large earthquakes are hundreds of years or more. Increasingly dense observations and physics-based simulations empowered by high-performance computing (HPC) provide pathways for overcoming this lack of data towards a better understanding of the physics and driving factors of large earthquakes. The 2023 Turkey earthquake sequence involved unexpected ruptures across numerous fault segments. 3D earthquake dynamic rupture simulations can illuminate the complex dynamics of the earthquake doublet constrained by observations available within days of the sequence and deliver timely, mechanically consistent explanations of the unforeseen rupture paths, diverse rupture speeds, multiple slip episodes, heterogeneous fault offsets, locally strong shaking, and fault system interactions. I will discuss implications of such simulations across scales – from induced seismicity to megathrust earthquakes.