Glaciology, Physical oceanography, Bathymetry, 0720 Glaciers, 0726 Ice sheets, 0738 Ice, 0794 Instruments and techniques, 1223 Ocean/Earth/atmosphere/hydrosphere/cryosphere interactions, Greenland, ice-ocean interactions, multibeam echo sounding, Glaciology, Physical oceanography, Bathymetry, 0720 Glaciers, 0726 Ice sheets, 0738 Ice, 0794 Instruments and tec...