Unprocessed shot gathers from active source seismic surveys over an inferred active subglacial lake, Isunnguata Sermia, West Greenland, 2024-2025

We present here unprocessed shot gathers from active seismic surveys acquired over an ice surface elevation anomaly, inferred to be caused by an active subglacial lake, on Isunnguata Sermia, West Greenland. Seismic reflection data were acquired over three field campaigns in July 2024, October 2024, and June 2025. The seismic data were acquired to image and characterise an inferred active subglacial lake, as part of the NERC-funded SLIDE (Subglacial lakes at Isunnguata Sermia - Dynamics and Evolution) research project (NE/X000257/1). The acquisition system consisted of 48 vertical component geophones (100 Hz) and a 12 kg sledgehammer source impacting a plastic baseplate. Survey designs varied between campaigns to adapt to the challenging surface topography and to leverage improving constraints on the subglacial bed geometry.

The SLIDE project is funded by the Natural Environmental Research Council Standard Grant NE/X000257/1.