Bathymetry of the terminus of Kangerlussuup Sermia, Greenland

Multibeam bathymetry data were collected on 21 and 23 July 2013 using a pole-mounted RESON SeaBat 7111 Multibeam Sonar System. Positioning data were acquired using an Applanix POS/MV model 320 positioning and orientation system. The survey operated at 100 kHz with 301 equi-angle beams, and we constrained the sound velocity profile at the time of the survey using in situ conductivity-temperature-depth casts. We collected data along the submarine calving face by inserting a 15 degree wedge into the multibeam sonar system mount to maximize vertical imaging. The resulting point cloud data represent individual measurements of the terminus location and were processed using Caris software to remove anomalous pings and to merge multibeam returns with positioning and orientation data.