This dataset provides boundaries of Antarctic drainage systems for the ice sheet and ice shelves. Characteristics of each system (Table 3 in the reference) are also included in the attribute table. The original dataset shows polygons of full (grounded + floating portions) drainage systems and their grounded portions only. The dataset provided in Quantarctica is recalculated so that grounded and floating portions of each drainage system are shown. Originators: http://icesat4.gsfc.nasa.gov/cryo_data/ant_grn_drainage_systems.php Publication date: 2012 Reference: Zwally, H. Jay, Mario B. Giovinetto, Matthew A. Beckley, and Jack L. Saba, 2012, Antarctic and Greenland Drainage Systems, GSFC Cryospheric Sciences Laboratory, at http://icesat4.gsfc.nasa.gov/cryo_data/ant_grn_drainage_systems.php Editors Glaciology Catherine Ritz catherine.ritz@univ-grenoble-alpes.fr Anne LeBrocq A.LeBrocq@exeter.ac.uk