I study the role of earthquake source, path, and site effects on ground shaking and broader tectonic controls on seismic hazard. I investigate the physical mechanisms controlling earthquake nucleation, rupture, and arrest across a variety of depths, from shallow earthquakes to Earth’s deepest tremors. My research explores Earth structure across a variety of scales, from shallow crustal heterogeneities that impact hazard estimates to subduction zone systems that inform our understanding of plate tectonics.