We will be conducting a 4-week geophysics experiment (active seismic and radar) in December of 2025 to support a large sub-ice drilling experiments. We initially planned to do this with in-house geodes/cables but we now have increased logistics capability (ground-based traverse vs. airplane) to transport equipment to our field site. So we are requesting a few more instruments that would be helpful with our surveys. FROM NSF PROPOSAL: Satellite observations show that the West Antarctic Ice Sheet (WAIS) is losing mass at an accelerated rate, much faster than other Antarctic regions. WAIS is considered highly sensitive to future warming because much of it is grounded 2500 m below sea level and its associated floating ice shelves are exposed to warming ocean waters. Future collapse of marine-based sectors and full melting of the WAIS has the potential to raise global mean sea level by 5 meters.