On 26 July 2018, we collected apparent resistivity data (ohm-m) in a sub-aquatic permafrost environment north of the Alaskan coastline at Drew Point in the United States. The data was collected with an IRIS Syscal Pro Deep Marine resistivity system that was equipped with a GPS and an echo sounder to record water depths. The geoelectric cable had an electrode separation of 5 m and the electrodes were arranged in a reciprocal Wenner Schlumberger array. The offset between the first electrode and the boat was 6.6 m. The main goal of the survey was to map the depth to the top of ice-bearing subsea permafrost. The survey started approximately 850 m offshore and ended close to the coastline.

Distance: Distance of boat position from starting point (m). This is not a cumulative distance.Water_depth: Water depth (m) from echo sounderRho_App_P1P2: Apparent resistivity (ohm-m) measured between potential electrodes P1 and P2. The remaining apparent resistivity columns have the same structure.C1_position: Position (m) of current electrode C1 relative to the boat position. For example, -36.6 m indicates that C1 is located 36.6 m behind the boat at the profile start.C2_position: Position (m) of current electrode C2 relative to the boat position. For example, -41.6 m indicates that C2 is located 41.6 m behind the boat at the profile start.P1_position: Position (m) of potential electrode P1 relative to the boat position. For example, -31.6 m indicates that P1 is located 31.6 m behind the boat at the profile start.P2_position: Position (m) of potential electrode P2 relative to the boat position. For example, -46.6 m indicates that P2 is located 46.6 m behind the boat at the profile start.The remaining electrode position columns follow the same structure.Latitude: latitude of boat position measured with GPS (WGS 1984)Longitude: longitude of boat position measured with GPS (WGS 1984)