Global seismology and mantle dynamics
- Seismic imaging of Earth's deep interior structure.
- Geodynamics of convergent plate boundaries and the mode of mantle convection.
- Waveform analyses; isotropic and anisotropic structure of continental lithosphere and upper mantle of the Australasian region, SE Asia, and North America (USArray/Earthscope); Body wave scattering in Earth's lower mantle.
- Continental evolution.