SCAR Antarctic Digital Database (ADD) Version 7.0.
Downloaded 2016-2017 from: http://www.add.scar.org/

Seamless Antarctic contour dataset, applicable to all resolutions. A compendium of three line datasets which should display well at all resolutions.

High resolution version was prepared by Cooper A.P.R, BAS 2011. Updates around Pine Island Glacier/Burke Island by Fretwell P, BAS 04/05/2012. Further updates around the Antarctic Peninsula and South Orkney Islands January 2013, by Fretwell P, BAS. Sources of individual line segments are contained in the data attributes. Last update 14/01/2015.

Medium and low resolution datasets have generalisations of 100m and 1km applied using ArcGIS.

For more information, see ADD_General.txt in this folder.