Research Professor of Geophysics
M.S., University of Trondheim (Norway), 1974; M.A., Columbia University, 1978; M. Phil., 1980; Ph.D., 1981. Research Fellow, 1989-92; Senior Research Associate, 1992-2014, Caltech, 2014-.
Seismotectonics; state of stress in the crust; stress triggering of earthquakes; crustal tomography; seismicity studies; instrumentation and software for real-time earthquake monitoring; earthquake early warning.