The Ross Group studies the physical processes behind earthquakes and faults. We use bleeding-edge algorithms from machine learning and statistics to extract hidden signals from the largest seismic datasets and gain new insights into the complex faulting process at depth. Our research focuses on high-resolution imaging of fault zones; understanding the complex patterns formed by earthquake sequences in space and time; resolving details of the earthquake source process; and using all of these observations together to constrain the structural and mechanical properties of fault zones at depth.