IceBridge BedMachine Greenland, Version 4

This data set contains a bed topography/bathymetry map of Greenland based on mass conservation, multi-beam data, and other techniques. It also includes surface elevation and ice thickness data, as well as an ice/ocean/land mask.本数据集包含基于质量守恒原理、多波束数据及其他技术手段构建的格陵兰岛床形地形（bed topography）与水深（bathymetry）地图。其还涵盖地表高程、冰厚数据，以及冰/海洋/陆地掩膜（mask）。