California Institute of Technology
Mathematical and Physical Sciences
Astronomy, Astrophysics, and Earth Sciences
Research centers on the physics of earthquakes. His work includes: (1) quantification of great earthquakes using Mw scale, (2) quantitative study of tsunami earthquakes, (3) physics of volcanic eruptions, (4) application of real-time seismology for hazard mitigation, (5) atmospheric waves excited by volcanic eruptions, (6) interaction between solid earth and atmosphere, (7) microscopic and macroscopic physics of earthquakes.