The above map shows the subglacial topography and bathymetry of Antarctica. As indicated by the scale on left-hand side, the different shades of blue and purple indicate parts of the ocean floor and sub-ice bedrock, which are below sea level. The other colors indicate Antarctic bedrock lying above sea level. Each color represents an interval of 2,500 feet in elevation.
This map was prepared from BEDMAP gridded data-set for bed-elevation south of 60 degrees S using Global Mapper 7.0.1. The faint rectilinear pattern seen in the shaded relief is an artifact of the gridding of data from linear seismic surveys. The data used to make this map came from "A new ice thickness and subglacial topographic model of the Antarctic" prepared by the BEDMAP Consortium, which is sponsored by the European Ice Sheet Modelling Initiative, Scientific Committee on Antarctic Research.
Copyright (c) 2008 Paul V. Heinrich All rights reserved.