Research Earthquakes are powerful evidence that the Earth is continuously reshaping. The seismic signals emitted by earthquakes encrypt 1) important information about these powerful and sometimes destructive events, and 2) intelligence about the ongoing modification and dynamics of the Earth's interior. I apply data science to extract this intelligence from millions of records of seismic waves. I am particularly interested in developing and applying new methods of inference to extract relevant signals from seismic records and to image the Earth’s interior structure from heterogeneous data. I am a practiced observational seismologist and co-develop seismic and joint tomography methods, including those using waveforms. Earth's interior structure reveals the effects of geodynamic forces that lead to planetary cooling, plate tectonics, continental rifting, subduction zones, volcanism, mountain building, earthquakes, and other modes of modifying its energy states. I am particularly interested in how plate tectonics started, how it is sustained, and when and how it will end. My research contributes to the idea that a secondary deep water cycle, through the transition zone, is a critical factor for sustaining plate tectonics. I also harvest information from seismic waves generated by ambient dynamics in the Earth System and deduce source mechanisms of earth- and marsquakes. Part of the data we analyze is acquired through seismological field experiments. I have participated in or led such experiments in four continents. Please check the Publications page to check out past and recent research. If you are a prospective graduate student, please apply to my department's graduate program and let me know per e-mail that you did so. You may also call my office phone number or request a video chat per e-mail if you have questions about working with me, in my research group, or in my department. If I miss your e-mail, please resend it after a week.