Olaf Eisen is head of the field glaciology group at the Alfred Wegener Institute and a professor for glaciology at the University of Bremen. With two decades of experience of applying geophysical techniques on glaciers and ice sheets, he heads a team in charge of operating the Alfred Wegener Institute's vibroseismic source and seismic streamer during the GHOST traverses. These processes aim to continuously map the subglacial structure in the survey area of Thwaites Glacier. The team's equipment is tailor-made for such an operation, and combines a seismic vibrator with a snowstreamer, towed by a tracked vehicle from shot location to shot location. This enables the team to record around 20 kilometers of profiles per day. They will perform subsequent data analysis and interpretation to determine basal properties and subglacial geologic structure.