We use InSAR to map deformation from radar imagery taken by satellites. Image from the 2017 Mw 7.3 Iran-Iraq Earthquake.

We use a sledge hammer or other source to produce seismic waves and measure their travel through the subsurface to determine layer structures, seismic velocity, depth to bedrock, and presence of groundwater. Photo from an active source survey in California. 

Electrical Resistivity Tomography is used to measure variations in ground resistivity which can help us to determine things such as depth and geometry of bedrock, presence of groundwater, and variations in soil saturation and salinity. Photo from an ERT survey in Maryland. 

Our group uses seismometers to passively record seismic events in the environment. Photo from ARROW 2022-2023 Seismic deployment on the Ross Ice Shelf, Antarctica.

Our group uses GPS measurements to observe and measure deformation. Photo from ARROW 2022-2023 GPS deployment on the Ross Ice Shelf, Antarctica. 

Our group uses machine learning to detect seismic events within seismic records and to identify landslides after storm events.