Imaging and characterization of subsurface structures and conditions in seismically difficult areas; high-resolution seismic experiments; model constraint with independent geophysical and geological data; tomography and monte-carlo optimization techniques; resource exploration and development; geological hazards assessments; earthquake fault characterization; site characterization; earthquake-shaking computation through 3D geological models, seismic-hazard and risk assessment and mitigation.
Over twenty years university teaching and research experience in geophysics. Many graduates with B.S., M.S., and Ph.D. degrees in Geophysics and Hydrogeology. Published with students several well-cited papers on innovations in seismic imaging of earthquake faults in California, Nevada, and New Zealand. Developed over the last 10 years a faster and more efficient site-assessment survey technique for earthquake-hazard evaluation. The refraction microtremor technique, a Nevada-owned technology, has been successfully commercialized by graduates and has become a standard engineering survey method worldwide. Research on this technology continues, focusing on measuring thousands of sites in California, Nevada, and New Zealand. Posted open-source software for seismic processing and for 3D earthquake-scenario shaking computation. Organized a Community Seismic Modeling Environment for Nevada.