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DeFord Lecture | Emily Brodsky

September, 24 2026

Time: 3:30 PM - 4:30 PM
Location: JGB 2.324

How Earthquakes Organize Stress by Emily Brodsky, professor at the University of California, Santa Cruz

Abstract: Stress is not uniform in the Earth. Therefore, we must use natural experiments to measure the distribution of stresses and related quantities, rather than single values. For instance, dynamic triggering shows that faults are uniformly distributed over their loading cycles in Southern California. The probability that a fault ruptures across a barrier measures the in situ energy distribution. Fault roughness reflects the distribution of strength. These natural experiments produce observable distributions that are surprisingly consistent and suggest some degree of self-organization in the Earth’s crust. Once established, the functional form of the distributions can be used to track changes in response to earthquakes as well as to distinguish fundamentally different fault systems. Transient fault locking before stress release in laboratory experiments can be interpreted as a consequence of self-organization of fault stress. The robust self-organization of multiple variables in earthquake systems suggests that the most consequential mechanical outcome of earthquakes may be the redistribution of stress and the strain energy associated with it. The low friction on a fault during seismic slip as inferred by temperature measurements of the Tohoku earthquake is consistent with dissipation playing a secondary role to this redistribution process. Through stress redistribution and interaction, subduction zone faults tend to synchronize, perhaps due to their geometric simplicity, while the continental system of Southern California cannot synchronize, perhaps due to the complexity of the fault network. Earthquakes organize stress in the crust and produce a suite of well-defined, consistent distributions.

DeFord Lecture | Courtney Schumacher

October, 01 2026

Time: 3:30 PM - 4:30 PM
Location: JGB 2.324

How Stratiform Rain Shapes Weather, Climate, and the Geological Record by Courtney Schumacher, professor at Texas A&M University

Bureau of Economic Geology Seminar Series

October, 02 2026

Time: 1:00 PM - 2:00 PM
Location: BEG Bldg 130, VR Room 1.116C

BEG Seminar presented by Chas Bolton, UTIG, in person.

Topic: TBD

Bureau of Economic Geology Seminar Series

October, 09 2026

Time: 1:00 PM - 2:00 PM
Location: https://utexas.zoom.us/j/93201377630?pwd=KzF3TW53SFYzSUg4SUZVNGtxd3JvZ

BEG Seminar presented by Bruce Hart, Western University, virtual

Topic: TBD

DeFord Lecture | Ching-Yao Lai

October, 15 2026

Time: 3:30 PM - 4:30 PM
Location: JGB 2.324

AI and Your Best Self

October, 16 2026

Time: 5:30 AM - 8:15 AM
Location: Welch Grand Hallway and 2.224 Auditorium

Artificial intelligence is breaking free of chatbots and computer screens and moving into the physical world around us. Next-generation AI systems are learning to see, understand, and act in the world the way a person would. In this Hot Science - Cool Talks, pioneer Dr. Kristen Grauman will explore how these systems will one day coach you through a new skill, guide you through an unfamiliar place, or help with everyday tasks by watching and offering real-time feedback, making personalized learning more accessible. Join us for a look at a future where AI is a part of your environment, helping everyone learn, discover, and navigate the world more easily.

Bureau of Economic Geology Seminar Series

October, 16 2026

Time: 1:00 PM - 2:00 PM
Location: BEG Bldg 130, VR Room 1.116C

BEG Seminar presented by Ruthie Halberstadt, JSG, in person.

Topic: TBD