BedMachine v3: Complete Bed Topography and Ocean Bathymetry Mapping of Greenland From Multibeam Echo Sounding Combined With Mass Conservation

Greenland's bed topography is a primary control on ice flow, grounding line migration, calving dynamics, and subglacial drainage. Moreover, fjord bathymetry regulates the penetration of warm Atlantic water (AW) that rapidly melts and undercuts Greenland's marine-terminating glaciers. Here we present a new compilation of Greenland bed topography that assimilates seafloor bathymetry and ice thickness data through a mass conservation approach. A new 150 m horizontal resolution bed topography/bathymetric map of Greenland is constructed with seamless transitions at the ice/ocean interface, yielding major improvements over previous data sets, particularly in the marine-terminating sectors of northwest and southeast…

• NS
  National Science Foundation

  Award: 1504230
• NA
  National Aeronautics and Space Administration

  Award: NNX15AD55G
• P
  Pinngortitaleriffik
• YU
  York University
• SR
  Sight Research UK

  Awards: NE/K004956/2, NE/D001986/1, NE/M000869/1, bas0100030, NE/K004999/1, NE/H020667/1
• UO
  University of Bristol
• UO
  University of California, Irvine
• NE
  Natural Environment Research Council

  Awards: NE/H020667/1, NE/D001986/1, NE/M000869/1, bas0100030, NE/K004956/2, NE/M000869/1, NE/K004999/1