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I am an associate professor in the Department of Earth, Space and Planetary Sciences (EPSS) at the University of California, Los Angeles (UCLA). My research is focused on the earthquake physics, where I use both observational and numerical approaches for problem-solving. Over the years, I have developed advanced source imaging techniques with applications on recent large earthquakes, such as the 2010 Haiti, the 2011 Tohoku-Oki, the 2012 off-Sumatra, and the 2013 Okhotsk deep-focus earthquakes. The observational constraint from such fine imaging allows me to conduct dynamic simulations to address open questions in earthquake physics. I am also interested in mitigating seismic and tsunami hazard through Earthquake Early Warning (EEW). I am developing a next-generation EEW system composed of small-scale seismic arrays that track the rupture growth and directivity effect in real time. I am also interested in applying novel numerical approaches in other problems of earth science. For example, I use templating matching techniques to detect missing earthquakes and repeaters. I apply Time Reversal Imaging to recover the initial seafloor deformation of tsunami source. I also work on modeling crustal deformation and salt dome evolution with the discrete element method. Check the "Research" and "Publications" pages for a flavor of my research topics.