I develop satellite radar and geodetic observations to understand processes that shape Earth’s surface and subsurface. A common approach connects my work: extract reliable signals from complex measurements, combine them with complementary observations, and use physical and inverse models to constrain processes that cannot be observed directly.

My current program connects three scientific directions:

• Groundwater under climatic and human forcing. Long-term InSAR, seismic sensing, and groundwater models reveal how aquifers respond to drought, atmospheric-river recharge, pumping, and resource extraction.
• New radar observables. Theory for decorrelation, closure phase, and multi-frequency SAR turns measurement complexity into information about soil moisture, irrigation, and land-surface change.
• Solid-Earth deformation. InSAR, GNSS, tremor, and mechanical models constrain slow slip, faulting, and magma-reservoir processes.

Since joining UT Dallas, I have established the UTD Imaging Radar Laboratory and built a collaborative group spanning Earth science, engineering, statistics, and data science. Current externally funded projects include a NASA investigation of groundwater recharge in Greater Los Angeles and a CRESCENT study of Cascadia slow slip.