By combining observations sampling a range of time and length
scales with geodynamic models, we aim to understand the spatial
and temporal variations of deformation at the boundaries of
the tectonic plates. We are interested in the relationship between
processes associated with the earthquake cycle, and long-lived
geologic structures. Observationally, we rely primarily on the
use of satellite-based interferometric synthetic aperture radar
(InSAR) and GPS, as well as gravity, topography, seismology,
geochronology and geology. Field locations we have focused on
include the central Andes, Iceland, Japan, Taiwan, Tibet and
the western United States. Besides investigating models of lithospheric
dynamics, we also use geodesy to detect magma migration in the
subsurface and use these observations to constrain our models
of the magma plumbing system in active volcanoes.
